Checkatrade is a directory of recommended and trusted tradesmen who have been fully vetted and monitored to ensure they meet a very high standard of trading.  

Checkatrade was first created in 1998, with the goal to rid the UK of rogue traders and Cowboys. Every trades person who wishes to become a member of Checkatrade must be interviewed and background checked, as well as being monitored by you, the consumer.

The Checkatrade website allows home owners to search for local, reputable tradesmen. All members must agree to have feedback from their customers displayed online for all to see so its easy to share your feedback of the company in question.

The Checkatrade Standard

All members promise to uphold the Checkatrade Standard. The company background checks and public feedback ensure that only the very best tradespeople are recommended to customers.

All recommended suppliers are committed to service and quality.

Builder Members Must:

  • Be honest in all dealings with customers
  • Let customers know of any call-out fees before visiting
  • Let a customer know straight away if they are unable to complete the work
  • Keep appointments and arrive on time
  • Be realistic about when they can start any work and how long it will take them
  • Be well mannered and treat customers and their property with respect
  • Keep the customer in the know of all aspects of the work being completed
  • Return customers phone messages promptly
  • Create an additional contract for variations from the original agreement
  • Deal with any customer complaints promptly and professionally
  • Never demand a cash payment
  • Never be rude or be abusive to a customer
  • Not obtain work through cold calling

The Vetting Process

All tradespeople are thoroughly checked before they are displayed on the website. Vetting requirements are constantly being improved and adapted to keep in check with Government legislation and current laws.


The company is interviewed to ensure that membership is right for them. This also gives the Checkatrade team an indication of how they conduct themselves.

Accreditations and Experience

Any accreditations or qualifications advertised on a trader’s profile will have been independently checked by Checkatrade before being displayed on the website.

Public Liability Insurance

All new members must have valid Public Liability Insurance and this is confirmed by Checkatrade before advertised on the website. This is to ensure you and your property are fully covered. Up-to-date copies are required from their members upon each renewal.

ID Checked

Each new member must provide a valid, in date copy of a driving licence or passport so the team can verify their identity.


All Checkatrade members are continually monitored with you, the customers help. Before an installer makes it onto the website, Checkatrade contacts 5 of their previous customers to get a review and help build a profile of the company in question.

Address Verified

All Checkatrade members are required to provide proof of address which is verified by a credible form of documentation.

VAT Registered

If a company is VAT registered, then it will be recorded and their VAT registration number will be displayed on their profile.

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Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

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 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.

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.

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.

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.

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.

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.

Is uPVC Flammable?

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

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 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 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.

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.