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Why Choose Thermaframe?

Double glazing Sidcup

Unrivalled Product Quality

Thermaframe works with the very best suppliers in the industry, ensuring that we offer the highest quality products to our customers. You’ll be left with stunning and practical home renovations.

Double glazing prices Sidcup

Affordable Prices

All our double glazing home improvements are great value for money. We don’t believe that double glazing should cost the Earth. As a result, we offer competitive prices to homeowners in Sidcup.

Double glazing costs Sidcup

Entirely Customisable

Choose from a range of different customisation options when you have your double glazing installed by Thermaframe. You’ll be able to configure the colour, size, accessories, glazing and more.

High Quality Double Glazing in Sidcup

We here at Thermaframe offer a comprehensive double glazing installation service. We offer minor renovations, such as windows and doors, as well as more significant investments like a new conservatory or extension.


We install a range of different window styles in Sidcup and the surrounding areas including uPVC Windows, uPVC Sash Windows and Aluminium Windows. Our most popular windows are our uPVC models. However, we also offer stunning, modern aluminium windows and timber frames, for those looking for a touch of class.

Whether you live in a more traditional home or a new build, we have a window for you. In total, we offer six different uPVC window frames – the most popular of these being the casement frame. However, for something more traditional, you can opt for flush casement windows or bow & bay designs.

All our windows come fitted with our bespoke double glazing, which delivers great home security as well as visual appeal. Double glazing will see you improve your home’s heat retention, improving its overall energy efficiency. They come fitted with market leading locking systems as well.


Whether you’re looking to replace your front door, back door or both, we have something for every taste. The pick of the bunch is our composite doors, which deliver unrivalled security levels thanks to their 48mm solid core. We also a stunning range of customizable uPVC front doors.

We also offer a range of aluminium bi-fold doors, which work brilliantly as a means of opening up your home into your garden. They use an innovative sliding mechanism are made from lightweight, robust aluminium. It’s no surprise that they are becoming increasingly popular in Sidcup.

In addition, we also offer both French and patio doors for those looking for something more discreet. All our doors come fitted with our energy efficient double glazing. You’ll also be left with a brighter, more welcoming home that will be filled with natural light.

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Conservatories & Other Products


Modern, double glazed conservatories can transform the look of any home. Unlike the extensions of old, they will stay at the optimal temperature right through the year. It’ll be a functional social space for every month of the year.

You can choose from a range of styles, including lean-to and P-shaped, to suit whatever available space you have. You can also customise your new conservatory’s roof as its overall style. Choose from glass, solid or tiled conservatory roof options. Create something which is entirely unique.

Here at Thermaframe, we also offer orangeries and house extensions to our customers in Sidcup, which all come fitted with our double glazing. An orangery combines the bricked wall of a traditional extension with the double hipped roof of a conservatory. They too are becoming more and more popular.

Roofline Products

In addition to the products listed above, we also offer roofline services, including fascias, soffits and guttering. All our roofline can be unified alongside our windows and doors, to give your home a stylish finish. We can all also install Ultraframe’s roof lanterns, as either a new fitting or a replacement roof.

Our range of fascias, soffits and guttering are made with the very best materials to ensure you are getting a high-performance range of products. These are designed to safeguard your home from harsh weather conditions, whilst still looking sleek and stylish. Get in touch today to find out more.

Areas We Cover

Thermaframe complete double glazing installations right across the Kent and Surrey areas. In addition to working in Sidcup, we complete home renovation projects in Sevenoaks, Tonbridge, Tunbridge Wells, East Grinstead and further throughout the county. Get in touch to find out if we install in your area.

Benefits of Double Glazing Sidcup


Heat Retention

We know how important it is that your home is kept warm and cosy during cold weather spells. This is why all our double glazing products are made with your best interests in mind. Our range includes thermally broken frames to enhance heat retention and the best fit in the allocated space.



Older homes are sure to suffer from low performance from their windows and doors. Especially if they were installed many years ago. Our range of double glazing ensures your home is kept free from water ingress, while keeping cold draughts at bay.


Home Security

We understand the importance of having a home that is safe throughout the year. Our double glazing home improvement products are fitted with state of the art locking systems. We utilise technologically advanced mechanisms to ensure you are getting the best product on the market to keep you safe.


Bespoke Design

Having windows and doors that don’t match the aesthetics of your home isn’t ideal. This is why we offer a variety of colours and finishes with each of our double glazing products. Thus, ensuring you are getting the right fit for your home. Our colours and finishes are designed to not rot, warp or discolour.


Low Maintenance

We know you don’t want to spend all your time cleaning, which is why our double glazing products are designed to be low maintenance. To keep them looking brand new and clean, all you need to do is give them a quick wipe down with soapy water. Give yourself more free time with our exceptional products.


Reliable Installer

We work with the best installers in the industry to provide you with an exceptional range of products. However, we also provide excellent installations. Combined, we have many years of experience working in the industry, so you can be sure to get the highest level of customer service with our double glazing.

Double Glazing Prices Sidcup

To find out more about our double glazing in Sidcup, get in touch with us today! Give us a call on 01959 534720. Alternatively, send us an email using our online contact form or get a quote using our online quoting engine.

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