Live in a listed building, older home or just tired of the outside noise? Our secondary glazing adds a second layer to your windows without changing how they look. It’s a smart choice for listed and period homes, helping you stay warmer and enjoy a quieter space.








Want a warmer and quieter home without changing your windows? Our secondary glazing is a great fit for sash and timber frames. It adds a second layer to help keep heat in and noise out, without touching the original look of your home.
Whether you’re tired of the outside noise, looking to cut down the heating costs or want to keep the character of your older home, we’ll make sure the glazing fits perfectly. You’ll notice a calmer space and better comfort without changing how your home looks.
Book your free quotation appointment with one of our local expert consultants who will:
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Tell us what you need and we'll guide you through your options.
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Get a detailed, no-surprises quote that fits your budget.
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Watch our expert team transform your home with precision.
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Join our happy customers enjoying warmer, quieter homes.
Tired of outside noise and looking for a proper solution? You’re in the right place. At GT Glazing, we offer secondary glazing for homeowners across Stevenage. With over 80 satisfied customers, many are now enjoying a quiet and comfortable home without any major changes to their windows.
Just reach out and we’ll walk you through all options, offer a free quote and keep our pricing fair and competitive. Our team works quickly, keeps things simple and makes sure there are no complications from start to finish.
EXCELLENT Based on 86 reviews Posted on Edwards BakeryTrustindex verifies that the original source of the review is Google. Great quality of windows and doors, best price around and I've had 5-6 quotes! Fast response time with any enquiries and very professional customer service!!Posted on Eddie JacobsTrustindex verifies that the original source of the review is Google. Brilliant service, love my new front door. Where the old door couldn’t even open fully due to hitting the stairs, Greg has fitted a lovely outward opening door, all within a good timeframePosted on Nikki ZimblerTrustindex verifies that the original source of the review is Google. Professional, reliable and efficient service. Highly recommended. Very reasonable prices too. Would definitely use again.Posted on kathie hughesTrustindex verifies that the original source of the review is Google. Needed a sealed unit replaced in a rental property. The job was priced up promptly and the unit was fitted at the arranged time. Great all round service.Posted on Herts and HomesTrustindex verifies that the original source of the review is Google. Greg and his team do all my windows and door for my building company. So easy to get on with. Always do a great job, the customers love the service. Will be using Gt glazing for all future projects. Here is some lovely bifolds he fitted for usPosted on Holly GolderTrustindex verifies that the original source of the review is Google. I have used Gregg for a few years now , he is always prompt at getting quotes across , competitively priced and does the job to a high standard . Would recommend !Posted on Ravi PatelTrustindex verifies that the original source of the review is Google. Needed a small repair job completing as I had an issue with a window not closing. Gregg was extremely efficient & professional in finding a slot in his schedule. He got the job done promptly at a good price. Would highly recommend.Posted on Tom EvansTrustindex verifies that the original source of the review is Google. Excellent install of secondary glazing….the difference in terms of noise and warmth is remarkable. Greg was a delight to deal with, always on time and super tidy. Highly recommended!!Posted on SarahTrustindex verifies that the original source of the review is Google. Great service and efficientPosted on The beard fatherTrustindex verifies that the original source of the review is Google. Greg was fantastic . No fuss , very clean and over all very happy
Looking to make your home in Stevenage more comfortable? We install secondary glazing to keep heat in and cut down noise. Got a quote already? Show us and we’ll try to match or beat it, making things easy for you.
FAQ'S
We fit an extra pane of glass on the inside of your current window. It adds a gap that helps keep your home warmer and cuts down outside noise so you don’t need to change the existing windows.
Yes, it works really well. The extra glass and space between the panes help to reduce sounds from traffic, neighbours or busy streets especially if you live in a noisy part of Stevenage.
Yes, you can. The panels are fitted on the inside and designed to open or slide when needed. You’ll still be able to open your windows, let fresh air in and keep things clean and simple.
Yes, it’s a great option because it goes on the inside, it doesn’t change how your windows look from the outside. That means you can keep the character of your home while still getting better comfort and less noise.