Welcome to Coldseal Windows

Quality & service from start to finish

Enhance your home with quality windows, doors or conservatories

Looking for quality windows, doors or conservatories, all at a great price? We have an extensive range of high- quality double glazed home improvements available in a range of colours, finishes and designs.

Quality Doors

Looking for the perfect new door at a great price? Visit Coldseal. We sell a range of made to measure doors to suit your style and budget. With a fantastic selection of composite, bi-fold, patio and french doors, you won’t be disappointed. Why not book a home consultation for free measuring, advice and a quotation?

Double Glazing & Windows

If you are looking for the stylish and affordable double glazed windows in Derby, Nottingham, Leicester or Birmingham, then look no further than Coldseal. We sell a range of fantastic windows, all at a great price. With a fantastic selection of high quality windows, available in a range of colours, finished to suit your style and budget.

Conservatory and Orangeries

Thinking about extending your living space then a stylish, modern or traditional conservatory could be the answer. The Coldseal range of conservatories are designed specifically to meet your needs, and we will take care of everything from the foundations right through to building control. Need more details book a free home survey from Coldseal

You are just 2 Clicks away from getting a fast and free quotation from Coldseal

Get in touch today, our surveyor will show you samples, explain the differences, design a 3D Drawing for your conservatory or extra living space and give you a quotation.

Conservatory Roof Refurbishments

Looking to upgrade your existing conservatory roof to a lightweight, insulated and tiled conservatory roof then Coldseal offers a huge range of conservatory roofs individually designed to fit your budget and open up your living space, you won’t be disappointed. Why not book a home consultation for free measuring, advice and a quotation?

Garage Conversions

Need to add some extra living space to your home then it may be time to consider a quality garage conversion from Coldseal. We will design, build and complete every aspect of your garage conversion to add valuable extra living space and value to your home. Book a free consultation and we will offer some professional advice, free of charge.

Garage Doors

Need a new or replacement garage door, then Coldseal garage doors may be the answer you are looking for. Coldseal offers a huge range of quality Garage doors designed to fit your budget. We supply and install Up & Over, Roller garage Doors, sectional and side sliding garage doors as well as matching side garage doors. Call today.

You are just 2 Clicks away from getting a fast and free quotation from Coldseal

Get in touch today, our surveyor will show you samples, explain the differences, design a 3D Drawing for your conservatory or extra living space and give you a quotation.

Trusted Local Home Improvements

Coldseal Windows are a local home improvements company that can deliver the best quality windows, doors, conservatories and garage conversions.

Coldseal have many years of experience and have built an enviable reputation as a Home Improvements company that will deliver on its promises. We take pride in offering a heritage quality service with modern standards of security, insulation & design.

Our focus is on customer service, from initial discussion through to the completion of the project, our customers are involved in every step.

Our surveyor will explain what products and options are available for your individual requirements and our Project management and delivery team will keep you in the loop at every step.

The first step on this journey is to schedule an appointment to understand the options available and receive an affordable price

If a jobs worth doing, its worth doing right!

Coldseal are all about passion. Passion for quality, passion for our products, and our services. Here at Coldseal we try to embed our ethos in the people whom we work with and the way that we do business. Everything we do is under written by a comprehensive insurance backed guarantee

Designed to meet the high standards and security that homeowners have come to expect for their homes.

The gateway to a home. Our doors are secure and designed to be the centrepiece of the entrance to your property.

Expansive views, designed to ensure you maximise the use of internal living space, modern, eligant and unique to you.

Panoramic views of the outside and increased natural light inside with our beautifully designed, Aluminium Bi-fold doors and windows.

The Warmest Tiled Conservatory Roof Over Your Head

The beauty of a Coldseal replacement tiled roof conservatory is that it works efficiently to offer you a room that can be used all year round, without the noise, glare and extreme temperatures Just comfort, quality living space and light – all year round. A Coldseal replacement tiled conservatory roof can be easily fitted to any model or style of existing conservatory and offers energy efficiency that’s 10 times greater than an ‘A’ energy rated window.

Hand Finished by Local Craftsmen

We only use the best mix of innovative products from leading brands, such as Yale and Liniar to create beautifully crafted, hand-finished windows and doors.

About Coldseal Windows

The aim of Coldseal Windows is to always improve the living standards of our customers through delivering great products and providing amazing customer service. We are the local experts in uPVC windows, composite doors and stylish conservatories installations and conservatory refurbishments.

Our Goal is to be rated the best in the region for customer satisfaction, we are so confident in the quality of our products and services that we offer a comprehensive, insurance backed 10 year guarantee and 10 year security pledge to give you that extra peace of mind.

We specialise in double glazed and triple glazed windows (uPVC and aluminium), composite doors, bi-fold doors and conservatories designed to suit your home, the needs of your family and your budget.

We offer free no-obligation quotes and we aim to beat any like for like quote to ensure you get the best deal around.  A small deposit is all we require for work to be started, it has never been easier to make home improvements.



Our Range Of Windows & Doors Come in Many Different Colours

composite door, coldseal windows, upvc windows quote,As the time approaches to replace your uPVC windows, it’s a chance to reinvigorate your home. Coldseal Windows offer heritage and modern, contemporary Windows, Doors and Conservatories in both Upvc & Aluminium  to transform the appearance of your home. Nothing adds improved kerb appeal like new windows and an stylish entrance door.

The colour of the windows is a big factor in the way a house looks, and while white uPVC is traditional, it certainly isn’t your only option. Indeed, some properties benefit massively from a different colour uPVC, and a creative colour choice can make a rather plan looking home look positively unique.

Choose from 11,000+ Door Colour Options


We offer one of the largest range of composite door colours in the UK. Our Customers can choose from 20 colours inside and/or outside of the door, with 18 frame combinations. Amongst our hugely diverse colour range is a number of industry firsts including Rich Aubergine, Chartwell Green, Duck Egg Blue, French Grey and Irish Oak.



The Local Double Glazing Specialists

At Coldseal Windows, we always ensure your doors and windows are repaired to the highest standard. We can provide you with a complete uPVC window installation and repair service.
Our local team of professional window and door installers have gained the expertise and knowledge to repair all makes of windows and doors. You can rest assured your property is in safe hands. Trust us to employ the latest techniques to repair your existing windows and doors.

Count on our technicians for:

• uPVC window repairs

• Misted double glazed units replaced
• Replacement of broken glass units
• Repairs to broken handles, locks, hinges and spring balances
• Conservatory repairs
• Doors repaired or re-hung

Coldseal Windows Opening Hours

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Mon: 9.00am – 6.00pm

Tues: 9.00am – 6.00pm

Wed: 9.00am – 6.00pm

Thu: 9.00am – 6.00pm

Fri: 9.00am – 6.00pm

Sat: 9.30am – 12.30pm

Please note we are closed on all UK Public Holidays 


Protecting Your Investment

Coldseal Windows will continue to protect the investment you make in your home with our third party guarantee insurance.

A solid investment protection with every purchase

Each time you begin a home improvement project, you sign an agreement with the supplier and trust that they will see the entire endeavour through to completion, and beyond into the warrantee period and you expect to be fully satisfied with the work. After all, many home improvement projects don’t come cheap — you are making a significant investment in the condition of your property, and anticipate the improvements to be up to par and built to last.

Coldseal Windows have got you covered

We don't know what the future holds and we anticipate a bright future, however, there may be instances that could cause you to lose the hard-earned money you set aside for your home improvement project. The Home Owners Protection insurance is transferable with your property and includes

  • Deposit Protection
  • Bankruptcy or Liquidation
  • Cease trading

With guarantee insurance, you can be assured that your money is well spent on quality home improvements that are performed to your satisfaction, and that your house receives the renovations or expansions it needs to serve your family well.




Call Us Today for a Cost-Effective Quote

A quick call to our team is all it takes to arrange a free consultation. Unlike other windows companies we will never pressure you to make a decision. We believe in a relaxed, friendly and professional approach when it comes to providing you with a quote and information about our services.