Secondary Glazing

Secondary glazing is the perfect when double-glazing is unaffordable or undesirable, for example, in listed or period buildings. CWBS are the North Wests primary window fitter. Gain the benefits of double-glazing by installing a separate single layer of glass to the inside of your existing window frames. This will reduce traffic noise and give you the warmth and security of double glazing without replacing your existing windows.

Proven to eliminate draughts common on old window frames and thus reduce heating bills, it is also a viable solution for windows in commercial premises, such as the windows in pubs or social clubs, where it is important to keep noise in. Virtually invisible from the outside and unobtrusive from the inside, secondary glazing can solve a range of replacement window problems quickly and cost-effectively.

Affordable glazing

This solution is often a more affordable glazing option.

Reduce traffic noise

Add an extra layer of soundproofing to your home.

Reduce heating bills

Make your home more energy efficient and reduce bills.

Increase security

This glazing solution can add an extra layer of security.

Quick installation

Minimal disruption to your home with a quick installation process.


We have over 50 years  experience in the industry, we have undertaken a large amount of projects in both domestic and commercial developments specialising in secondary glazing. See our completed, ongoing and signature projects below.


Since being successfully involved with various glass replacement activities on the Paradise Street Project on behalf of Laing O’Rourke Construction North, Ian Skyner and his team at CWBS quickly became the preferred supplier for the Grosvenor Estates Management team on the huge Liverpool One development in the heart of Liverpool. CWBS have been recognised for their attention to detail, speed of response and proactive support of both the estates management team and the retailer management teams.

Project Manager, Laing O'Rourke

We can’t recommend this company highly enough, we engaged them to project manage, design and build the refurbishment of our newly bought apartment in a listed building in the Albert Dock Liverpool. The project was a challenge as the team at Ultra Developments had to ensure they understood the requirements of working in a listed building and work with us to renovate the apartment sympathetically in line with its heritage, and successfully integrate modern improvements enhancing its unique features and setting. The team were experienced, skilled and very professional and could not do enough for us and they have delivered all of our ideas and wishes, provided excellent advice and the quality of their work and eye for detail has been of the highest standard.The result of their work is stunning and well surpassed our expectations.

Jan Souness, Domestic Client

When we bought our home with four distinct areas in the back half of the house, it was great because there were so many rooms! After a year or so in the house we thought about changing the kitchen and it was then that we realised that with four areas we were losing a lot of space and light. We invited Ultra Development along to discuss what we could do. They were great, buzzing with new ideas and dramatic changes, they showed great patience as we considered the possibilities. They invited a kitchen designer along to give us some ideas of what the kitchen might look like after the changes. We took the plunge and now have a beautiful kitchen diner 6.5m by 6.5m with all the light we could want and a great space to party! Thank you Ian and Paul.

Simon Draper, Domestic Client

I could not praise Paul and his team enough for the fantastic workmanship. Their time keeping is spot on they are there when they say they will be. They were very accommodating with access etc for my disabled son and the cleanliness on site was spot on. It was a pleasure to have them work in my home.

Ann, Domestic Client

Thinking about secondary glazing?Let us provide you with a free quote
0845 340 2677 | 07757 498 018 | 07710 632 132 – [email protected]

Book your free estimation