Double glazing costs vary depending on your exact needs or requirements. Our double glazing price guide provides you with all the information you need in order to make an informed decision on your windows, doors or conservatory.

Being aware of double glazing costs is essential if you want to get a good deal but exactly how much can you expect to pay? How much is double glazing?

As it is with everything else, the most effective way to find out that answer is to compare prices.

Comparing prices helps you in two ways. It helps you find the double glazing cost that works best for you. It also gives you an idea of what is available and what your options are.

For example:

The double glazing prices for a house with 8 windows comes to a cost of £4,505, and in that amount, you will get basic white uPVC windows bought and installed. On the other hand, if your requirements are more than just basic windows, your double glazing cost will go up.

Double glazing prices greatly depend on the material, style, and size of the windows you want. While these do influence the double glazing cost to a large extent, other additional factors will also add to the total double glazing cost which we discuss in this article.

The Average Cost of Double Glazing

To start, uPVC double glazing costs are around 30% less that wood and 50% less than aluminium.

The typical cost of a casement window measuring 1800mm X 120mm might be something in the neighbourhood of £350, whereas a small bathroom window could be as little as £150.

When thinking about the average cost of double glazing you will need to take into consideration that your requirements and specifications will vary the price with a number of different options and styles to choose from.

uPVC Casement Window Prices (Fixed Window)

Casement Window Size Colour Guide Price
500mm x 500mm White £150 – £175
500mm x 500mm Wood Grain £175 – £200
1000mm x 500mm White £175 – £200
1000mm x 500mm Wood Grain £200 – £250
1000mm x 1000mm White £200 – £250
1000mm x 1000mm Wood Grain £225 – £275
1200mm x 1200mm White £225 – £275
1200mm x 1200mm Wood Grain £250 – £300

Don’t forget, this includes survey, installation, removal of the old windows, certificate (FENSA, CERTASS, etc), VAT and warranty. You might get a better price from a one-man-band, but the savings are unlikely to be huge.

What Affects Double Glazing Prices?

Double glazing prices vary a great deal based on manufacturer, brand, glass, frame, window type, and other details. It’s important to know what you’re paying for, so you can make the best decision for your home and your budget.

Glazing and Glass – Simple glazing styles can cost from £150 whereas decorative glazing options can go up to £3000 for the same installation. The type of glass you are asking for will determine the overall price of your double glazing. For example, you will be choosing from leaded detailing, Georgian Bars, whether you want the glass to be opaque or transparent and more.

Toughened Glass – If your windows are within 80cm of the floor inside or 30cm within a door, they must be fitted with toughened glass. Toughened glass is simply heated and then cooled at a pre-determined rate to result in secure glass that will break up into crystals rather than smash into large shards. This is an excellent safety feature as well as a security feature.

Frame Material – The material of the frame will affect the cost and is one of the most important considerations. uPVC is the most common and the least expensive option with a low maintenance solution that can last well for 10-15 years. Aluminium and wood frames are more expensive; however, they have a longer lifespan on average of up to 30 years or more.

You can expect the following price ranges for a 60×90 cm casement window.

uPVC Casement Window Prices (Fixed Window)

Material From To
uPVC £250 £570
Aluminium £500 £605
Composite £575 £625
Wood £845 £910

Window Type – There are a number of window types to choose from that will affect the price of your double glazing project. From casement, French casement, tilt and turn, flush sash, sash, bow and bay windows and more to choose from, the possibilities are endless. Some of these designs are more expensive than others, depending on your personal taste and property type.

Consider the following average prices for a 60×90 cm uPVC window.

uPVC Casement Window (Average Cost)

Style From To
Casement £250 £570
Sash £500 £1050
Tilt and Turn £400 £675
Bow and Bay £500 £600

Window Size – The larger the window the more expensive, which is to be expected. It is worth measuring your windows so that you know what size they are and the number of panes you need which will give you the opportunity to get an accurate and realistic quote.

Brand – Some brands are more expensive than others. National brands all offer top quality windows and have a good reputation however they do cost more than a small local installer. This is why it is so important to research and compare quotes to get the best possible price for your budget.

Energy Rating – Double glazing windows with a higher energy rating will cost more than those that don’t achieve great ratings. A-rated glass is the most desired to make sure you have excellent energy efficiency and insulation. A or B rated glass is the most sought after whereas lower ratings are cheaper but less likely to perform well.

Property Type – Every home is different which is why your double glazing needs will differ too. The cost of your double glazing will change depending on how easy it is to install your new windows, what level they are on and more. It’s worth checking this when you speak to the company you decide to hire to make sure you know what cost implications this has.

Custom Sizes – If you have very old window frames, you may have to pay extra for custom frames and glass. All double glazing units are made to measure to fit with your home, but if you have an unusual sized window frame or opening, it may mean that the cost is hire.

What is Included In Your Double Glazing Cost?

There are a variety of add-ons and design choices that could naturally increase the cost of your double glazing. The type of frame you choose, whether you prefer a chrome or gold handle to the standard white or simply the number of windows you wish to have installed, could all affect the double glazing costs.

Other factors which contribute to your overall double glazing costs include supplementary add-ons such as more bespoke colour options which may increase the costs, heightened security measure or the installation of cat flaps in matching uPVC doors could push the cost up as required.

Your double glazing cost will also depend on which company you decide to go with. Will you be referring to a Trusted Local Supplier? Or will you be using a general tradesman or large national company that deals in arcane discount structures?

Bay Windows

What are the Price of Double Glazing Units?

Actual double glazing unit prices can vary hugely. There are several reasons for this, not the least of which is the buying power of your supplier.

The one-man-band repairman will pay £75 for the same sealed glass unit that will cost a local specialist company £50 or less. Other variations can be put down to style.

You could expect the replacement double glazed sealed unit cost for a unit that has Georgian bars or lead designs to increase in the order of £30 or more, depending on the size of the unit.

What is the Cost of Replacement Double Glazed Units?

When it comes to replacement double glazed sealed unit prices, you’ll probably find that the bulk of the cost is down to the labour rather than the unit itself.

Take a typical sealed unit costing £35. To replace it will require a visit by a service engineer to take measurements. Expect this call to cost about £20. He’ll order the unit and return a few days later to fit the new one. That will be a further £20.

What you actually gain from using the services of a Double Glazing on the Web Trusted Local Supplier over a one-man-band is the peace of mind that your repair is being carried out by someone who is trained, qualified and experienced and who is backed by an established local company.

All in all, double glazing unit prices are pretty reasonable, as are labour rates. So, you needn’t waste time worrying if you need this service. Just contact Double Glazing on the Web.

Double Glazing Window Prices

Window prices are dependent on many factors including size, style and glass type. How many windows need to be replaced? Does your new window require a standard or wood grain finish? In order to get an accurate price, you need to consider these options.

Getting comparable quotes from local installers will help you determine exactly what your budget should be and give you an insight into the amount of work that will be undertaken should you choose them for your home improvement project.

The double glazing costs will vary from company to company, but you can get a great deal if you’ve done the research around your needs and requirements.

uPVC Casement Windows

How Much Does Double Glazing Cost Per Window?

A single casement window with a uPVC frame of 60cm x 90cm starts around £250.

To show how much of a difference there is in the double glazing cost between window styles, a sash window of the same size and material will start from around £500.

Most double glazing companies will charge a price for a window that reflects he cost of manufacture and installation. The majority of double glazing installers will have transparent and fair pricing, so that you can budget accordingly, and they’ll ensure that your project doesn’t spiral out of control from your set budget.

With this in mind, our trusted local double glazing companies can help you plan your project so that there is minimal impact on your budget.

If your house could be described as an average sized property, then you might expect your double glazed windows to average between £300 and £400 each. To get a more precise idea of cost, use the Double Glazing on the Web quoting engine to get a guideline price.

As a comparison between the difference in double glazing prices between different styles of windows, let’s take the cost and installation charge of a single 100cm x 100cm window with a white uPVC frame;

  • A casement window costs between £325 to £420
  • A sash window costs between £640 to £820
  • A tilt and turn window costs between £490 to £625
  • A dual turn window costs between £575 to £670

That is quite a range of prices between styles!

Any design or styling changes, like colour of the frame and handle colour, will add to the double glazing cost. Some things you may need to consider include:

  • Do you want gold, chrome, black or white handles?
  • What handle types do you want? Something ornate or decorative, or something simple and minimalist.
  • Do you want a wood-grain finish to have the authentic look of timber?
  • Would you want design on the glass that is decorative and coloured?
  • What type of glazing would you like?
  • What colour do you want your windows, do you want them to match the surroundings of your property or blend in with the exterior?

Just like the style of the window, the size also plays a huge role in determining the double glazing cost of your windows. A typical 1800mm x 1200mm window might cost you £350, while a small bathroom window is more than half the price at £150!

uPVC Casement Window Prices (1 Opener)

Casement Window Size Colour Guide Price
500mm x 500mm White £250 – £300
500mm x 500mm Wood Grain £300 – £350
1000mm x 500mm White £275 – £325
1000mm x 500mm Wood Grain £325 – £375
1000mm x 1000mm White £300 – £350
1000mm x 1000mm Wood Grain £350 – £400
1200mm x 1200mm White £350 – £400
1200mm x 1200mm Wood Grain £400 – £450

What is the Average Replacement Window Cost?

If you are looking to give your property an instant face-lift, then nothing will enhance its appearance more than sparkling brand new windows.

The average cost of replacing windows in a house will depend on the size of your home improvement. It can also depend on your regional area, supplier and time of the year.

How many windows are you looking to replace? Are you wanting a standard white finish or wood-grain effect?

Consider all of your options before getting a quote.

Should I get Supply or Supply Only Windows?

Are you planning to go DIY, or will you require a fitter? As you would assume, the overall price of your uPVC double glazed windows or doors will be significantly lower without labour costs.

However, supply only windows may be cheaper but make sure you know all the facts before you install your window yourself.

Fitting double glazing isn’t simple; in fact, it’s a complicated task. A mistake made in the installation process could lead to misted windows and draughts. You are purchasing double glazing to improve your energy efficiency, right?

Double Glazing on The Web only recommends DIY double glazing to those who are experienced in the fitting of double glazing. This is not a job you want to get wrong.

There are many benefits to having an accredited installer fit your windows. Your trusted supplier will have many years’ experience fitting windows. You won’t have to provide the tools, or the materials. Your installer will even clean up afterwards.

Did you know that Double Glazing on The Web can also provide you with free supply only double glazing quotes? Call us today on: 0800 015 5679 for your double glazing costs.

Timber Windows

Price Recommendations

Another way to get great double glazing costs, is through recommendations. Ask friends, family and neighbours. Which company did they choose and how much did it cost? Are they happy with the service they received? Do your research.

We all know there are dodgy companies out there. This is no surprise. For every reputable business out there, there is also a cowboy builder making his rounds. Recommendations and reviews are important to an installers business.

At Double Glazing on The Web, every one of our trusted double glazing companies are fully accredited. We will never put you in touch with a rogue builder, only trusted and reliable tradesmen are a part of our national network. Contact us to find out more.

Other online websites such as Checkatrade, also promote reliable tradesmen. This interactive service allows customers to review companies and leave valuable feedback.

A cheap price doesn’t necessarily mean quality. If the price is too good to be true, then it probably is. Quality and price should go hand in hand.

Finding a company, you can trust can be difficult. We have many customers come to us daily asking to be put in touch with a trusted installer. All our suppliers are fully checked and accredited which means you receive the best double glazing at the best price.

What Types of Double Glazing Windows are there?

When it comes to windows, there are a number of styles and types for you to choose from. See an overview of the core designs below:

Casement Windows: A casement is simply a window which is attached to a frame by one or more hinges. Casement windows are mostly hinged at the side with windows which are hinged from the top called ‘awning’ windows.

Flush Sash Windows: This window style is very popular in use of older, cottage style properties however there is now a trend for these windows in slightly more contemporary properties due to their stylish and simplistic looks.

French Casement Windows: These French style uPVC windows can be personalised in various designs to suit your property. If you wish to maintain a traditional appearance, either wood grain finishes, or Georgian bars will help you achieve the classic look you are after.

Bay Windows: Constructed so they project outwards from your property, bay windows give you a unique outside view whilst adding lots of light and depth to your room. Most commonly found in living rooms and at the front of a property.

Bow Windows: Bow windows are a variation of the bay window and are made from four or more window units of similar size creating a softer, curved edge. Unlike the bay window, a bow window is commonly placed on a sill and is rounder in shape, providing softer angles.

Sash Windows: uPVC sash windows are a beautiful and energy efficient alternative to standard sash windows. Both stylish and practical, they allow you to maintain traditional appearances whilst keeping your property secure.

Tilt and Turn Windows: If you are after a scenic view with safe and secure ventilation then the versatile uPVC tilt and turn won’t fail to impress. The stylish and contemporary uPVC tilt and turn window is attractive and functional, combining quality aesthetics with revolutionary design.

uPVC Casement Window Prices (Fixed Window)

Casement Window Size Colour Guide Price
500mm x 500mm White £150 – £175
500mm x 500mm Wood Grain £175 – £200
1000mm x 500mm White £175 – £200
1000mm x 500mm Wood Grain £200 – £250
1000mm x 1000mm White £200 – £250
1000mm x 1000mm Wood Grain £225 – £275
1200mm x 1200mm White £225 – £275
1200mm x 1200mm Wood Grain £250 – £300

 uPVC Casement Window Prices (1 Opener)

Casement Window Size Colour Guide Price
500mm x 500mm White £250 – £300
500mm x 500mm Wood Grain £300 – £350
1000mm x 500mm White £275 – £325
1000mm x 500mm Wood Grain £325 – £375
1000mm x 1000mm White £300 – £350
1000mm x 1000mm Wood Grain £350 – £400
1200mm x 1200mm White £350 – £400
1200mm x 1200mm Wood Grain £400 – £450

French Casement Window Prices

Casement Window Size Colour Guide Price
500mm x 500mm White £450 – £500
500mm x 500mm Wood Grain £575 – £625
1000mm x 500mm White £475 – £525
1000mm x 500mm Wood Grain £600 – £650
1000mm x 1000mm White £500 – £550
1000mm x 1000mm Wood Grain £625 – £675
1200mm x 1200mm White £525 – £575
1200mm x 1200mm Wood Grain £675 – £725

uPVC Sash Window Prices

Casement Window Size Colour Guide Price
500mm x 500mm White £525 – £600
500mm x 500mm Wood Grain £625 – £700
1000mm x 500mm White £600 – £700
1000mm x 500mm Wood Grain £700 – £800
1000mm x 1000mm White £625 – £725
1000mm x 1000mm Wood Grain £725 – £825
1200mm x 1200mm White £725 – £825
1200mm x 1200mm Wood Grain £850 – £950

Tilt And Turn Window Prices

Tilt &Turn Window Size Colour Guide Price
800 x 800 White £400 – £450
800 x 800 Wood Grain £525 – £575
1000 x 800 White £450 – £500
1000 x 800 Wood Grain £550 – £600
1000 x 1000 White £475 – £525
1000 x 1000 Wood Grain £575 – £625
1200 x 1200 White £500 – £550
1200 x 1200 Wood Grain £625 – £675

Bay Window Costs

A bay window cost will vary between installers but you can get an average price for an installation with our free, online quoting engine. Simply enter the measurements of your bay window (see how to measure windows) and receive an instant bay window quote.

Start your free bay window quote.

In order to get an accurate online quote, please select a style of window to make up each section of the bay window individually.

Bay Window Prices (3 Section)

Casement Window Size Colour Guide Price
2400 x 1200 White £1050 – £1150
2400 x 1200 Wood Grain £1150 – £1250
2400 x 1500 White £1125 – £1225
2400 x 1500 Wood Grain £1250 – £1350
3000 x 1200 White £1150 – £1250
3000 x 1200 Wood Grain £1275 – £1375
3000 x 1500 White £1250 – £1350
3000 x 1500 Wood Grain £1375 – £1475

Bay Window Prices (4 Section)

Casement Window Size Colour Guide Price
3000 x 1200 White £1400 – £1500
3000 x 1200 Wood Grain £1525 – £1625
3000 x 1500 White £1500 – £1600
3000 x 1500 Wood Grain £1650 – £1750
3600 x 1200 White £1500 – £1600
3600 x 1200
Wood Grain £1650 – £1750
3600 x 1500 White £1600 – £1700
3600 x 1500 Wood Grain £1750 – £1900

Bay Window Prices (5 Section)

Casement Window Size Colour Guide Price
3600 x 1200 White £1850 – £2000
3600 x 1200 Wood Grain £1900 – £2050
3600 x 1500 White £1950 – £2100
3600 x 1500 Wood Grain £2050 – £2200
4000 x 1200 White £1900 – £2050
4000 x 1200 Wood Grain £2000 – £2150
4000 x 1500 White £2050 – £2200
4000 x 1500 Wood Grain £2150 – £2300

Bow Window Prices (3 Section)

Casement Window Size Colour Guide Price
2400 x 1200 White £1050 – £1150
2400 x 1200 Wood Grain £1150 – £1250
2400 x 1500 White £1125 – £1225
2400 x 1500 Wood Grain £1250 – £1350
3000 x 1200 White £1150 – £1250
3000 x 1200 Wood Grain £1275 – £1375
3000 x 1500 White £1250 – £1350
3000 x 1500 Wood Grain £1375 – £1475

Bow Window Prices (4 Section)

Casement Window Size Colour Guide Price
3000 x 1200 White £1400 – £1500
3000 x 1200 Wood Grain £1525 – £1625
3000 x 1500 White £1500 – £1600
3000 x 1500 Wood Grain £1650 – £1750
3600 x 1200 White £1500 – £1600
3600 x 1200
Wood Grain £1650 – £1750
3600 x 1500 White £1600 – £1700
3600 x 1500 Wood Grain £1750 – £1900

Bow Window Prices (5 Section)

Casement Window Size Colour Guide Price
3600 x 1200 White £1850 – £2000
3600 x 1200 Wood Grain £1900 – £2050
3600 x 1500 White £1950 – £2100
3600 x 1500 Wood Grain £2050 – £2200
4000 x 1200 White £1900 – £2050
4000 x 1200 Wood Grain £2000 – £2150
4000 x 1500 White £2050 – £2200
4000 x 1500 Wood Grain £2150 – £2300

Go Local and Save Money

Local companies are unlikely to have expensive overheads like those incurred by national brands. A company has to pay for factory premises, storage and sales so it makes sense that a national company will price their products higher to make back the costs. Smaller companies tend to charge by the window, without having a minimum order.

How Much Does Double Glazing Cost For Terraced Houses?

Your double glazing price will depend on the styles and spec of your windows, hinges, locks and glass.

Based on a small terraced house with 6 windows, the double glazing costs are as follows:

Casement Windows: On average £2,400

uPVC Sash Windows: On Average £4,400

The cost of double glazing a terraced house will also be dependent on the energy ratings of your windows.

A Rated windows for example, will cost much more than C rated windows. However, energy efficiency is important if you want to secure a warmer, more comfortable home. Therefore, you may want to consider the benefits A Rated window can bring to your home.

In the long run, opting for a high Window Energy Rating of A will save you money on your heating bills, meaning the cost of your new double glazing will be a greater benefit as you notice a difference in the temperature of your home almost immediately after installation.

uPVC Windows

How Much Does it Cost To Double Glaze A 3 Bed Semi?

If you are looking to double glaze an entire modern build 3 bedroom house (12 windows and 2 doors) then you are likely to receive mixed costs from double glazing companies. Double glazing costs will inevitably vary between installers, but this can be confusing especially when costs could range from £3000 to £10,000.

Depending on sizes, the average cost for a window is £350 to £400 fitted and a uPVC door is around £600, so the total cost for double glazing a 3 bedroom semi-house is likely to be around £4900 – £5300.

Of course, doors will range in price depending on whether you use uPVC or composite doors, the latter being more expensive.

Double Glazing Repair Costs Vs Replacement Costs

Repair or replace your double glazing? If your problem can be sorted out inexpensively and if you are happy with the look and performance of your existing double glazing, a repair may be the answer.

But, it’s worth considering the fact that double glazing has advanced hugely over the past decade in both energy efficiency and aesthetics. It would be a shame to spend a lot of money on repairs when you could improve your home and reduce your energy bills by investing in new windows.

The Benefits of Double Glazing Repair

  •  If the double glazing repair cost is low, you’ll save money by not replacing your windows.
  • A repair can often be done in a single quick visit.
  • You avoid the possibility of having to redecorate
  • A temporary repair can give you time to save for a complete replacement

Online Double Glazing Costs

If you have a replacement window project and want information on pricing and quotes, then we can provide you with the information you need. Our online quoting engine provides you with a detailed quote, allowing you to gain an overview and basic estimate.

It allows you to get instant double glazing costs for a wide range of double glazing styles. From casement windows to composite doors, you can get free online quotes for multiple designs.

Double glazing prices as always, will vary between companies and in order for you to get the best double glazing prices; you have to choose the right installer. After you have made your online quote, Double Glazing on The Web can put you in touch with up to 4 local double glazing installers.

The idea is to shop around and compare. Talk with different double glazing installers and find out their costs. You can even show them your online double glazing costs.

uPVC Casement Windows

What is Included in Your Double Glazing Costs?

When you create your online double glazing quote the price includes the following:

  • A full Technical Survey to check measurements and ensure building regulations are met.
  • The product itself, window, door or conservatory.
  • Wide choice of different window, door or conservatory styles and designs.
  • The measurements / sizes of the product you require.
  • The uPVC frame colour including white, wood grain on white or wood grain.
  • The energy efficiency rating for windows (either A, B or C WER).
  • Security features such as standard or high security locking systems. Read more about security.
  • Glass (either standard, toughened or obscured).
  • Handles (in various colour options such as white, gold, chrome or black).
  • The external cill for your new window or door (150mm).
  • Full installation including all colour matched trims, fixings, silicones and sealants.
  • Registration with an industry body such as FENSA or Certass and relevant certification
  • Our trusted local suppliers after care service
  • Trims, fixings, silicones and sealants
  • The removal and disposal of your old windows and doors

All prices quoted online are a guide price only and are subject to a full technical survey from your trusted local supplier. Therefore double glazing costs may change once the full technical survey has been carried out.

You will also be happy to know that all our window costs include VAT, survey, installation, 150mm external cill, warranty and are FENSA or Certass certified, so there are no hidden extra costs or surprises.

What Happens Next?

Once you have completed your online quote, you will receive an email including a link to your online double glazing price so that it is easy for you to access in the future and either add or amend the details.

Double Glazing on the Web operate a national network of approved local double glazing suppliers who we are able to put you in touch with. They can arrange a convenient time to come and see you in order to take accurate measurements, show your their products and give you their best price for you new double glazing.

We regularly monitor our network to ensure they provide you with the very best value for money. All of our local suppliers are fully accredited therefore you can be confident you are dealing with honest and ethical companies.

Should you require any further technical advice or help regarding your online quote, please contact us on our freephone and a member of our team will be very happy to help: 0800 015 5679

Double Glazing Cost Calculator

To get an even more accurate estimate of your double glazing price, you can use our online double glazing cost calculator. This free and simple tool allows you to enter your requirements to generate a unique quote for you. It will take you a few moments to get a fairly accurate figure.

What’s more, the link to your quote will be emailed to you so you can refer to it later. This link will also allow you to amend or add to your needs. You can use it to play around and get the configuration you think will suit you best.

While the rates that our double glazing cost calculator gives you is accurate to a high degree, the double glazing prices are subject to a full technical survey from a local supplier that you trust. A full technical survey might result in a change in the rates.

uPVC Bay Window Close Up

How Do You Keep Your Double Glazing Cost Down?

In order to keep your double glazing costs down, don’t always opt for the cheapest double glazing companies for your home improvement needs. You need to choose an installer who can cover your exact needs and deliver the project you want.

How do you ensure that the double glazing prices you are paying are the best in the market? To ensure that, you will need to shop around and compare quotes. We recommend you do not settle for the first quote you get. It is always a good idea to get double glazing prices from 4 or more sources.

By shopping around, you will be able to identify the right options to suit your needs perfectly. You might also get a competitive quote by shopping around at the right time of year.

Get started by getting a quick quote with our online double glazing cost calculator!

What’s the Cheapest Double Glazing?

Standard uPVC casement frames are the cheapest option for any home improvement project, with prices starting at about £250. uPVC doesn’t have as long a lifespan, with the need for replacement or repair within 20 years.

Wood frames cost twice as much but last up to 5 times longer, with an excellent life span. However, traditional timber can suffer with issues such as warping, rotting and discolouration, needing maintenance and upkeep on a regular basis.

Secondary glazing is a cheaper way to gain the advantages of better thermal efficiency. Instead of replacing the frames and profile, a new layer of glass is added behind it to add to the insulation.

It’s important to take the time to do your research and compare at least 4 different installers to get the best price. Double glazing installations are highly competitive, so you can greatly reduce the cost.

Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

What is Double Glazing?

Double glazing is where windows have two layers of glass with air tight gap between them to reduce loss of heat as well as provide effective noise insulation.

How Does Double Glazing Work?

Heat loss is greatly reduced using double glazing. Double glazing features two panes of glass with a layer of trapped air or gas in-between. Air is a poor conductor of heat so much less heat is lost through the window itself.

Condensation on Double Glazed Windows

When moisture in the air suddenly cools and condenses on a cold window, you get condensation. Well insulated (Low E) double glazing will help prevent condensation from forming on the interior of your window. Replacement glass units or replacement double glazed windows are recommended for windows with condensation.

What Happens if I Have a Problem with my Windows or Doors?

All of the double glazing installers in our network offer product guarantees. Provided you are still covered by your manufacturer's guarantee, all you need to do is contact the installer in question and they will either repair or replace your windows and doors.

What Are Double Glazed Windows?

Double glazed windows feature two panes of glass for better heat insulation and noise reduction. Window frames come in a variety of materials such as UPVC, wood and aluminium. Double glazed windows also come in a choice of styles to suit your home, you can choose from a wide range of window designs which include the casement window, tilt and turn window, sash window, sash horn window and bay window.

How Much Do Windows Cost?

Window prices will depend on your specifications such as size, style, glass type and security locks. At Double Glazing on The Web you can get an instant window cost online using our online quoting engine. Simply choose your window style and enter your window measurements to receive a unique window price.

Are Double Glazed Windows Soundproof?

Double glazed windows are built to provide improved sound insulation. Double glazed windows are recommended for homes situated on busy roads or built up areas where external noise can be a problem.

Are Double Glazed Windows Good For The Environment?

Once of the best ways of making your home more energy efficient is insulation. Double glazed windows act as another layer of insulation, helping to prevent the loss of valuable heat.

What is an Orangery?

An Orangery extension is different from a conservatory in both size and style. Orangeries are typically designed to be a direct extension from your home, with brick walls that complement your existing build. An orangery roof usually incorporates a glazed lantern which provides a conservatory style element, providing lots of natural light.

Can Double Glazed Doors be Fitted with a Pet Flap?

Depending on the style of door, a pet flap can be fitted as an extra service. The only exception is when glass panels feature on the lower half of the door.

How Much Do Doors Cost?

Your double glazed door cost will depend on specifications such as style, size, locks, glazing and door furniture. Double Glazing on The Web gives you the opportunity to create your very own unique door quote online. Start your free door quote today.

Do UPVC Windows Discolour?

Your UPVC window will never rot, rust, peel or flake due to its long lasting material. An occasional wipe clean is all that is required.

Do UPVC Windows Look Cheap?

UPVC windows do not look cheap. They can be designed to offer slim sightlines and come in a wide variety of colours and finishes, not just the standard white. Authentic woodgrain finishes are available to achieve more of classic look.

What Does UPVC Stand For?

UPVC is an abbreviation for unplasticised polyvinyl chloride which is used in window frames.

Do UPVC Windows Need Trickle Vents?

Trickle vents are not a requirement, however they do offer additional ventilation without the need for opening your windows so can be a valued add on.

What Colour Options are Available?

There is a wide range of colour options available including both standard and bespoke colours and finishes. Aluminium windows and doors even come available in a RAL colour chart which gives you an infinite choice.

If I Use Double Glazing on the Web Who Will Fit My Double Glazing?

Double Glazing on the Web have a fully accredited network of local installers. Once you have created your free online quote we will put you in touch with up to three reputable local suppliers. Each of these suppliers will offer you a free no obligation quote and who you choose is completely up to you.

Why Should I Choose One Of Your Installers?

All installers that operate in affiliation with Double Glazing on the Web are accredited by a recognised industry body such as FENSA or CERTASS. Double Glazing on the Web vet all of our double glazing installers to make sure you receive a professional and efficient quality service.

How Much Does A Conservatory Cost?

Your conservatory cost will depend on its specification. Your conservatory size, style, finishes, glazing and build are all factors which will determine the overall price. The good news is, you can now calculate the cost of your conservatory online using our handy online quote builder.

Do I Need Conservatory Planning Permission?

Conservatories are seen as a permitted development, however you may require conservatory planning permission if you have a listed property or if you are living within a conservation area.

Should I Buy A DIY Conservatory?

A DIY conservatory can be a great option if you have the required knowledge and building skills. It can be an expensive choice however, if anything should go wrong. The best thing about a supply and fit conservatory is that your installer takes care of all of the work for you, this includes any building requirements or planning permission.

Why Should I Buy A Conservatory?

A conservatory is an affordable way to extend living space and will prove to be a worthy investment over time. Not only does it help improve the value of your property but it provides you with a multi-functional space to use all year round.

What is The Best Type of Conservatory?

When choosing the best type of conservatory for your home, your property and garden size as well as style have to be considered. For example if you lack garden space, you don't want a conservatory build that is going to be too overpowering. There are conservatory designs for all types of home and specification so any property, traditional or new can benefit from this airy extension.

How Long Will It Take To Install My Casement Window?

Because every job is different, it is best your talk to your double glazing installer who will be able to give you an exact timescale.

Which Bi-folding Door Configuration is Best?

When choosing the arrangement of your bi-folding doors you need to consider the size and layout of your room. Outfolding bi-fold doors will take up less internal space when completely folded back and a left of right folding will be dependent on space available in your room.

How Long Does It Take To Install Bi-Fold Doors?

If a survey is scheduled within 48hrs then your bi-fold doors can be supplied and installed within just 6 – 8 weeks.

How Secure Are Bi-Folding Doors?

Bi-folding doors are extremely secure and are built with a high security locks as standard. Each of our double glazing installers will offer their own range of locking systems with additional upgrade options for all security conscious homeowners.

How Can I Get Casement Window Prices?

You can get instant casement window prices by using our free online quoting engine or you can contact us on: 0800 015 5679 to speak to one of our advisors.

Are There Other UPVC Casement Window Styles?

Other UPVC casement window styles include the French casement window which is a more traditional take on the standard casement style.

Will I Have A Choice of Casement Window Locks?

A high security lock will be fitted as standard with your new casement window but your double glazing installer will also offer a choice of security upgrades.

What Are Flush Casement Windows?

Flush casement windows are where the unit sits flush to the frame, creating a super sleek look.

Are There Different UPVC Casement Window Sizes?

UPVC casement windows come in a wide range of sizes to suit your property. You can specify your casement window size in our window cost calculator to get a unique window price!

Can I Choose My Casement Window Handles?

Your double glazing installer will offer you a choice casement window handles and casement window hardware options so you can achieve the perfect look.

What is a Casement Window?

A casement window is attached to its frame by one or more hinges. A casement window is hinged at the side allowing them to open extremely wide. These windows can double up as emergency exits and are perfect for hard to reach places within the home, with many home owners installing these windows behind their kitchen sinks.

Where Can I Get A Tilt and Turn Windows Price?

You can get a tilt and turn windows price using our window cost calculator which will give you a free and unique quote within a matter of minutes.

How Does The Tilt and Turn Window Mechanism Work?

The tilt and turn window can be ‘tilted’ inwards due to its unique turning action which allows the window to be easily accessed from both inside and out. All it takes is a swift turn of the handle.

How Much Do French casement windows cost?

The cost of French casement windows will vary depending on installer but you can get an average casement windows cost using our free online quoting engine

How do UPVC Sash Windows Work?

UPVC vertical sliding sash windows are built to either slide vertically downwards or upwards. This opening function makes the UPVC sash window much easier to use compared to traditional wooden windows where the only choice is double hung and single hand.

Are UPVC Sash Windows Easy To Use?

UPVC sash windows are very easy to use. Their spiral balance mechanism allows for smooth operation so you can open and close your windows with ease. UPVC sash windows are also incredibly low maintenance and require very little cleaning.

Why Should I Choose a UPVC Sash Window?

UPVC sash windows are incredibly attractive and make a stunning addition to any property and are relatively low maintenance thank to their UPVC design. You can enjoy a traditional aesthetic for many years to come thanks to their long standing properties.

Replacement Sash Windows In A Conservation Area

If your home is a listed property or within a conservation area then you will need to seek planning permission.

How Much Do Double Glazed Sash Windows Cost?

UPVC sash window prices will vary according to glazing style, your choice of locks and even your chosen colours and finishes. You can get an average sash windows cost using our window cost calculator.

Can I Have Front Doors With Glass?

Entrance doors come in a wide range of designs for your home, including a choice of side panels and glazing. Your double glazing installer can offer you a range of front door designs with glass.

Are UPVC Doors Easy To Maintain?

UPVC doors are extremely easy to maintain and will never require re-painting or varnishing. Neither will a UPVC door rot or warp!

Do You Do Replacement Front Door Locks?

The majority of our double glazing installers do provide replacement front doors and replacement front door locks. Please call one of our advisors on: 0800 015 5679.

What Are Composite Doors Made Of?

Composite doors are made of a combination of high performing materials which is why they are so strong and incredibly long lasting. The composite door is made from: reinforced UPVC, fibreglass skin, high density foam and a water resistant composite materials.

Do Composite Doors Fade?

Composite doors feature a tough and durable skin where colour runs throughout rather than a simple surface coating. This means a composite door is not likely to wear or fade like the majority of painted doors. A composite door is very long lasting which also reduces the amount of maintenance required to keep it looking in top condition.

Do Composite Doors Need Painting?

Composite doors do not require re-painting. These low maintenance doors feature a water resistant GRP, coloured skin which keeps a pristine appearance year after year.

Do Composite Doors Warp?

A composite door will not warp like wood and won't require regular painting.

Can I Get Composite Side Panels?

Composite doors are available with matching composite side panels, your installer will offer you a choice of colours and glazing.

Is Every Composite Door Different?

There are different qualities to every composite door and they will vary between manufacturers depending on materials used. At Double Glazing on The Web we only put you in touch with the highest quality suppliers and installers.

Can I Choose Custom Glass?

You can choose from a wide range of custom glass. Your double glazing installer will offer you a choice of glass types and glazing designs so you can choose custom glass for your windows, doors or conservatory.

How Much Do Composite Doors Cost?

The cost of a composite door will be dependent on several factors such as the composite door style, composite door colour, size, composite door hardware and composite door security extras. The fastest way to get a composite door price is online with our door cost calculator.

What Do Stable Doors Look Like?

These country style doors offer charming aesthetics and are a stylish alternative to standard back doors, stable doors a great choice for any kind of property. This door is split in two halves which open independently from one another as well as function as a whole. Whether you are after a traditional stable door or more contemporary design with modern glazing, your double glazing installer will be able to offer you a wide range of options for your property.

Are UPVC Stable Doors Made To Measure?

Your UPVC stable door will be made to measure and tailored to your specifications given to your double glazing installer.

How Much Do UPVC French Doors Cost?

UPVC French door prices will depend on your personal requirements and specifications such as size, style and glazing. To get an average French doors cost use our door cost calculator for a free online quote.

Are UPVC Patio Doors Secure?

UPVC patio doors can be fitted with a choice of high security locks to make them extra secure. You can also choose from a range of glazing styles to further enhance the strength of your patio doors.

Do I Need Planning Permission For Patio Doors?

You may require planning permission for double glazed patio doors if you have a listed building or happen to live within a conservation area. Visit the V for more information.

How Do Sliding Patio Doors Work?

UPVC sliding doors operate on a smooth, easy glide system which allows for effortless transition. They are attached to metal or vinyl tracks which are fitted to the top and bottom frames and plastic rollers are added to ease the movement.

How Do Slide and Swing Doors Operate?

A multi-pane door with individual panes slides on a single track with no loss of space. Panes are able to operate individually with no visible hinges or hardware. The slide and swing door can open up spaces between rooms or between home and garden or even conservatory.

Bay or Bow Window?

Simply put, it really depends! Bay windows offer often much welcome and useful extra storage space to the frontage of homes. On the other hand, bow windows provide a curved shape alternative in terms of look compared to bay windows. They are both beautiful options and can add much character and charm to the right property.

Can Bay Windows Look Modern?

Bay windows can easily be either modern or traditional depending on the combination of glass and / or coloured uPVC profiles now available. Subsequently, its easy for these windows to seamlessly blend in with contemporary or old properties.

What Makes Flush Sash Windows Different?

Flush sash casement windows are specifically designed to imitate the appearance of traditional wooden timber windows by appearing to have the same sashes that finish 'flush' with the outside face of the window.

How much is double glazing per window?

Double glazing prices per window can vary from around £150 to £600 depending on the specification. The window style, type of glass, frame colour and handles are all contributing factors. To find out the true double glazing price per window it is a good idea to get a number of quotes to compare.

What is the average cost to double glaze a house?

The average cost to double glaze a house will depend on the size of your house and the number of windows. To double glaze a flat or apartment it will probably cost around £2,000. The average cost to double glaze a house is usually between £4,500 to £7,500. If you collect a number of double glazing quotes you will be able to compare companies and prices.

Is double glazing expensive?

Double glazing can be an affordable addition for many homeowners. The price you pay can depend on the quality of the windows and the energy ratings. Other factors are the style of the windows, the colour of the frames and the type of glass. Why not get an online double glazing quote to get an idea of the price.

Is triple glazing better than double glazing?

In most instances double glazing will be an adequate upgrade to single glazed windows. Double glazing offers energy efficiency, noise reduction and security. If you live near a busy road or under a flight path you may want to consider triple glazing for the extra noise reduction that it can offer.

Is double glazing easy to break?

Double glazing is a strong option for windows compared to single glazing. The frames are durable and there are high security locking options. As double glazing is made from glass it is possible to break however you will have to exert quite a bit of force to do this. This is practically impossible to do without making a noise.

How much does it cost to replace a front door?

The price of a new front door will depend on the type and style of door you choose. The cost of a replacement uPVC front door can be as little £600 or as much as £1,200. Composite doors can start from around £800 but can cost around £1,500. The type of glass, extras and locking system you choose will affect the price of a front door. Get an online quote for uPVC front doors and composite doors to get a good indication of the cost.

How much should you spend on a front door?

The amount you spend on a front door will depend on the type of door you are looking for. uPVC front doors are generally cheaper than composite doors and can cost as little as £600. Composite doors start from around £800 to £1,000. If you choose more bespoke glass option or door accessories you can pay as much as £1,500 to £2,000. We recommend getting a number of quotes to see the different options that are available and compare front door prices.

How much does a cheap door cost?

A cheap uPVC door can be as little as £500, especially if you are looking for a back door. Front doors tend to be more expensive than back doors and cheap ones will start from around £600. Cheap composite doors usually start from around £800 to a £1,000. The locking system and glass options you choose will also affect the price of the door.

Which front door material is best?

There are several options when it comes to front door materials. The three most popular are wood, uPVC and composite. The material you choose will depend on what you are looking for. Wooden doors tend to be more expensive but offer a traditional style. In some instances, such as on listed buildings and in conservation areas it may be a requirement that the front door is wooden. uPVC doors are a cheaper option. They are energy efficient and durable but lack a traditional appearance. Composite doors are perhaps the best of both worlds as they are durable, low maintenance and replicate the traditional look of timber.

Are composite doors cheaper than uPVC?

Composite doors are usually more expensive than uPVC doors. This is because they are made from a number of materials rather than just uPVC plastic. They will often have a wooden internal frame and insulating filling. They emulate the traditional look of wood and are available in a multitude of styles and colours. uPVC door are generally cheaper but are a good durable and low maintenance option if you are on a budget.

How Much Is A Conservatory?

A Conservatory is cost-effective way of expanding your home without needing planning permission in most cases. Conservatory prices start around £6000. Please refer to our pricing guides below to see how much a conservatory may cost you, or start a quote today.

What’s the Difference Between an Orangery and Conservatory?

The biggest difference between an orangery and a conservatory is the construction of the roof. More than three quarters of a conservatory roof is glazed and an orangery has less than three quarters. A conservatory should have over half of the area of the wall glazed.

What Does Double Glazing Do?

Double glazing makes your house more energy efficient, keeping heating in and keeping the cold out during winter months. During summer months, it helps keep the hot air out, keeping your house cooler. It also works to insulate sounds from busy areas and roads, leaving your house more peaceful and quieter.

Does Double Glazing Block Sound?

Double Glazing not only provides heat insulation but it also provides sound insulation too. Double glazing is perfect for houses in busy areas and streets.

How Do I Know If My Double Glazing Needs Repaired?

There are four tell-tale signs that your double glazed windows need repair or replaced: There are chips and cracks in the panes of glass; there is condensation (misted windows) between the two panes of glass; the window allows cold air through; water begins to seep through the frame. If your double glazing does any of these things, you may need to get your double glazing repaired or replaced.

Can Conservatories Only Be Made Out Of uPVC?

Conservatories can be made out of uPVC, timber and aluminium – it really depends on the style you want for your home. However, uPVC is the cheapest material to make a conservatory out of; timber and aluminium are significantly more expensive. Please check our pricing tables below to get more of an idea on costs or start a quote with us today.

Do I Need Planning Permission To Build My Conservatory?

In most cases, you do not need planning permission for a conservatory, however, it must reach certain guidelines. For example, it cannot exceed the height of the original structure of the home. Please check your local council site for more details (links are found in the 'Gateshead Information' section).

How Long Will My Conservatory Last?

Depending on the materials used to build it, the installation and the general maintenance for a conservatory, they usually have a life span of anywhere between 10-30 years. UPVC conservatories, on average last about 20 years.

How Long Does It Take To Install uPVC Windows?

On installation day, a uPVC window will take anywhere from 3 hours to a full day depending on the shape, size and style of the window. When you place your order, it will take anywhere between 4-6 weeks to build and manufacture the parts for your bespoke window.

Is uPVC Flammable?

No, uPVC isn’t flammable and is actually a fire retardant.

Can My Windows Be Installed In Cold And Rainy Weather?

Yes, windows can be installed in any weather, however, it is important to remember the safety of the installers who come to put in your window and that the rain could damage things your property due to the fact there will be a hole in the wall for quite some time during installation.

How Much Does a Conservatory Cost?

Prices on conservatories begin around £6000, however, this will be dependent on the shape, size and style of your conservatory. Please refer to our pricing table below to get a better idea on how much a conservatory will cost or start a quote with us today.

What Can Cause Double Glazing To Crack?

Double glazing can crack for what appears to be no particular reason at all. A sealed window unit faces constant pressure either side of the glass, however, most of the time double glazing is strong enough to deal with this. Winter can be one of the worst time for cracked glass as the difference of temperature on either side of the glass stressing it to the point it can crack.

Should I Double Glaze My Windows?

Double glazing works to make your house more energy efficient saving you money on your heating bills. Double glazing also provides sound insulation which is perfect if your house is situated near busy roads and noisy areas. Double glazed windows are also tougher and harder to break than single glazing windows making your house more safe and secure.

How Long Does It Take To Install A Window?

From the moment you purchase your window it will take anywhere between 4-6 weeks to build and manufacture your window for you. The actual installation itself could take anywhere between 3 hours to a full day.

How Do I Know If My Double Glazing Needs Replaced?

Double glazing will need replaced after a while due to the nature of the design – the gas that separates the two window panes slowly leaks out over time meaning the energy efficiency of your window is compromised. If your double glazing allows cold spots; water to seep through the frame; has cracks or chips in the window or has a build-up of condensation between the two panes of glass (misted windows), you should probably look into getting your double glazing replaced or repaired.

How Long Does It Take To Install A New uPVC Window?

Once you place your order for a new window, it takes 4-6 weeks to build and manufacture the product. On the day of installation it could take anywhere from 3 hours to a whole day, depending on size, shape and style of window.

How Long Does Double Glazing Last?

It is important to note that the argon gas that separates the panes of gas, giving double glazing its energy efficiency will eventually leak out overtime. Double glazing has an average life span of about 20 years, however, this can vary depending on materials used and the installation.

Is Double Glazing Worth It?

Double glazing helps make your home more energy efficient as it prevents the loss of heat. During the summer, it helps to keep the heat out of your home. It provides your home with sound insulation which is perfect for houses that are in busy areas and streets. Double glazing also makes your home safer and more secure.

Is Double Glazing Easy to Break?

No, double glazing is not easy to break which means your home will be more secure. When attempting to smash double glazing often what happens is that the first pane of glass and the second will remain intact. This is due to the argon gas working as a shock absorber. This will mean the smash is very loud but unsuccessful on the first attempt.

What Is A Composite Door?

A composite door has the aesthetic of a wooden door, however, it has the practicality of a uPVC door meaning it will not warp like traditional timber. A composite door is very strong and secure as it is made up of uPVC, wood, insulating foam and glass reinforced plastic.

How Long Does It Take To Install a Composite Door?

It will take one or two installers between three to four hours to install a single composite door.

Are Composite Doors More Expensive Than uPVC?

Typically, yes. A composite door is more expensive than its uPVC counterpart due to the nature of how it is manufactured. Please refer to our pricing guide below to see the difference.

Why Is uPVC Used For Window Frames?

UPVC is used for window frames because it strong, durable, energy efficient and long lasting.

What Materials Can You Build A Conservatory With?

Conservatories can be constructed with either timber, aluminium or uPVC, the latter being the cheaper material out of the three. Please consult our pricing guide below to get a better understanding of what a new conservatory may cost you.

What Is The Difference Between French Doors and Patio Doors?

Patio doors originally related to the style of door that slides open but now has become a blanket term for other doors including French doors. French doors are hinged doors that swing outwards and, when open fully, allow access to all the space of the installation.

How much does it cost to install a window?

The prices given in our pricing tables, our online quotes and our costing calculators reflect the price of the window itself as well as the cost of installation. For example, a 500mm x 500mm casement window will cost between £150 and £175 including the cost of installation.

How much does it cost to double glaze a 3 bed house?

On average a double glazed window will cost between £350 and £400, with a uPVC door typically costing £600. This means that double glazing a 3 bedroom semi can cost between £3500 and £5000.

How much do composite doors cost?

Composite doors are a great alternative to traditional timber doors and offer unparalleled thermal efficiency, security, durability and thermal performance. They are also extremely weatherproof. Composite doors consist of an insulating core that is designed to keep warm air trapped inside your home, while keeping cold air outside. This can save you a significant amount of money on your heating bills over time. The insulating core is covered with a durable and hard wearing skin which makes the composite door extremely rugged and weatherproof. Composite doors are available in a range of colours and can be customised further with decorative glass and practical additions such as cat flaps. As composite doors are a top of the range product, prices do start high. Prices for composite doors begin at £1000, increasing to £1500 depending on your choice of glazing. However, if this fits into your home improvement budget, the composite door is a fantastic addition to any home.

Should I replace my old sash windows?

Sash windows are a key feature for many traditional period buildings. Sash windows were traditionally built using timber, which is fairly high maintenance and has a tendency toward rotting and warping. Over time, these windows can become draughty and insecure. uPVC sash windows are a great way to experience the benefits of modern double glazing, without sacrificing the aesthetic of your home. uPVC sash windows will not rot or warp and require little maintenance. They are also thermally efficient, which means that your home will not require as much heating.

How much does sash window restoration cost?

The cost of sash window restoration will depend on the survey result. Standard draught proofed sash windows (without sill replacement) usually starts at about £500 per window. The time taken will also depend on the survey result.

Can I install double glazing into my original sash windows?

This will depend upon what type of window you have. Replacing existing moving sashes with new, double glazed replicas might to be possible.

How much does it cost to replace a sash window?

The cost of replacing a sash window will depend on many factors including: style, size, material and glazing. A wooden sash window will cost significantly more than a uPVC sash window. A wooden sash window can cost up to £1000. Wooden windows are more expensive to manufacture so expect to pay that bit more. uPVC sash windows can be designed to mimic wood and are much cheaper in price. The starting price for a standard uPVC sash window is on average £525.

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