As durable as double glazing is, it won’t last forever. The signs should be evident. If your window or door is suffering from condensation, draughts or is damaged in any way, then you may want to think about replacement options.

If you are tired of your property’s appearance then new windows can give your home an instant lift. Not only will double glazed windows give your home more aesthetic appeal but they will also make your home warmer and draught-free.

Or, if you are looking to sell your home and your windows have seen better days, then you will want to fix the impending problems. Rotten frames and draught ridden units don’t scream quality and longevity.

Thinking of Selling?

Make sure your home is inviting to those potential buyers. Imagine a buyer looking at your house for the first time. Will they be impressed by old, discoloured frames?

uPVC windows are durable and hard wearing but like all things, they have a lifespan. If your uPVC windows or doors are approaching retirement then it is time to consider replacement options.

Replacement Double Glazing FAQ

Do your windows or doors need replacing? Here are some frequently asked questions on double glazing repair, replacement windows and doors.


I can’t open my window. What does this mean?

If you can’t open you window then the culprit more often than not, is your locks. Your window handle or sliding lock mechanism might be broken. You will need a replacement handle or lock.

My window won’t close. Can this be fixed?

Your hinges are likely to be broken. This will be the reason why you are unable to close your window. Over time, hinges are subject to wear and tear. This can cause your window to drop, preventing it from closing.

Why is my window letting in cold air?

Is your window closing tightly against the frame when closing? If your window does not close correctly then it will be subject to draughts, resulting in poor insulation. To solve this, your hinges will need to be replaced.

If you have single glazed windows then this could be another reason why you suffer from draughts. Single glazed windows will not insulate your home as well as double glazed windows. It may be time to upgrade.

Why have my seals shrunk?

Over time, rubber seals will shrink. This is why upon installation they are cut oversized. If you have unsightly gaps then you will need to replace rubber seals.


Why won’t my door open properly?

There could be many reasons why you are unable to open your door. It could be due to your locking system or locking cylinder breaking. If your door has dropped out of alignment, it could be that the door is blocking the frame. You may need a replace the actual door itself.

Why has the door dropped?

If your door is poorly installed then it is likely to drop. This is due to inefficient glazing and the door being out of alignment. Make sure you use a credible installer, one like our trusted suppliers.

Condensation in Double Glazing

Condensation can take many different forms. If misted windows are a common sight within your home then you are unfortunately dealing with condensation.

Other signs include water on window sills and in extreme cases, dark mould spots appear around the window. If this happens then you must treat the areas immediately. Household bleach will kill the mould and prevent them from spreading.

If your house is feeling the effects of condensation then it is time to change your windows. uPVC windows which mist or fog are hard to repair.

Discuss replacement windows with one of our local suppliers. They will be able to offer you expert knowledge having worked in the industry for many years. Contact us on: 0800 015 5679 to find out more.

Which Design Should I Choose?

Double glazed windows and doors are available in a range of modern and traditional designs. You will find all sorts of styles from casement windows to sliding sash windows (for the more traditional home.) The right style of window or door can greatly increase your property’s appeal, making it brighter and warmer.

Before you choose your replacement windows and doors however, you need to consider the style of your home, your current windows and environmental concerns such as energy efficiency.

New windows won’t add value if the rest of your property is shabby. The interior as well as the exterior has to maintain the same level of quality. Not only are these factors important for comfortable living but they will also play a key role in the sale ability of your home.

As the focal point of your property, your windows say a lot about your home. What do your current windows and doors say about you?

Replacing Old Sash Windows

Original sash windows can be found within many period properties. An attractive feature of these homes; they are dearly loved by both home owners and buyers. If you are looking to improve your homes energy efficiency however, these windows won’t do.

Many sash windows eventually become unusable due to broken top sashes and rot and wear. uPVC sash windows were created in answer to these problems, providing home owners with a window which combines traditional aesthetics with high security and efficiency.

Your local installer will provide you with a choice of authentic wood grain finishes, allowing you to maintain the appearance of your existing property.

Building Regulations

All replacement windows in England and Wales will be subject to Building Regulations. This is to ensure that all new windows are as energy efficient as possible.

If you have a listed property or live within a conservation area then you are likely to require planning permission. Your choice of windows may be limited as a result of this.

Installers, who are part of a self-regulation scheme such as FENSA or Certass, will be responsible for getting building control approval. Otherwise, you will be responsible for applying for building control approval.

Benefits of Replacing Windows and Doors

Double glazed windows and doors will also help reduce energy bills, reduce external noise, improve security and contribute towards a greener environment. These benefits will make your replacement window undeniably attractive to visitors and buyers alike.

However double glazing can be a costly investment if installed wrongly. This is why it is essential you choose a reputable installer.

How to Care For Your Replacement Windows & Doors

Take good care of your replacement windows and doors. Double glazing on the whole is low maintenance but is still subject to wear and tear. Keep your windows and doors functioning like new with the following useful tips.

uPVC Frames

When cleaning your uPVC frames you won’t want to use anything abrasive. Anything too harsh can lead to scratching. A little bit of washing-up liquid can work wonders. Products which contain bleach can remove the shine from uPVC frame.

Locks & Hinges

You will want to clean your locks and hinges every so often. This is to keep them operating smoothly. A wet cloth is all you will need to maintain them.

Eliminate Draughts

To ensure your windows and doors are draught free, keep them in the locked position. This will give you an air tight fit.


Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

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.

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.

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.

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.

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!

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.

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.

Can Double Glazed Windows Reduce My Heating Bills?

When you install double glazing in your home or commercial property, it is likely that the extra heat retention will lessen the need to use central heating systems. In turn, this could mean you see a drop in heating bills. If you are concerned about your energy bills, it is easy to compare business energy or home energy online.

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.

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.


Double Glazing Cost Calculator