Thank you for the fast turnaround on…
Thank you for the fast turnaround on our secondary glazing. We are very happy with the windows and service recieved, very easy start to finish, five start!!
30 octobre 2026
Avis spontané
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À propos de l'entreprise
Écrit par l'entreprise
Glasswise are secondary glazing manufacturers and installers based in London, providing secondary glazing nationwide across the UK. With over 30 years’ experience in glass and glazing solutions and listed building glazing compliance, we specialise in acoustic secondary glazing, soundproofing windows and thermal energy efficiency. Our acoustic sound reduction windows use specialist 6.4mm Stadip acoustic laminated glass to achieve up to 85% noise reduction from traffic, trains and aircraft. As a secondary double glazing solution, our windows also cut draughts and heat loss, making homes warmer and more energy efficient. We manufacture and install vertical sliding sash windows, hinged casement windows, horizontal sliders, lift-out and fixed units, all made to measure. Our aluminium frames are the lowest profiles on the market, making them ideal for listed buildings, period properties and conservation areas where replacement windows aren’t permitted. Secondary glazing London and UK nationwide: noise reduction, soundproof windows, draught proofing and energy-saving glazing, expertly fitted.
Coordonnées de contact
Gemma House, 39 Lilestone St, London , NW8 8SS, london, Royaume-Uni
- 0203 627 0198
- info@glasswise.org
- glasswise.org
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5 avis
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Excellent Service & Workmanship
Very pleased with my Glasswise secondary glazing. From the start they were efficient and very responsive. Taking time to explain exactly how it would work and finding a solution for a window with a narrow sill. Very quick lead time from start to finish and minimum fuss, noise & mess on installation day. The noise reduction in the back bedroom (where I had a wider sill) is very impressive. I used to hear a children's playground, football practice, barking dog & neighbours in their garden but not now. The front bedroom (with narrow sill) which overlooks the road and had road noise which made it difficult to fall asleep, has reduced it to an unobtrusive level.
Excellent service & workmanship.
Seamless experience - would absolutely recommend.
28 octobre 2026
Avis spontané
Highly skilled and seamless installation
Glasswise are highly skilled installers! We had a very tricky angled window and weren't sure if we could have a secondary glazing installed.
Glasswise took care of the whole process from measuring, manufacturing and installation. We are very happy with the result of the windows! They look amazing, very minimalistic and do a brilliant job of reducing sound. We will use them again in the new year for our other rooms and would highly recommend them to our friends and family. Keep up the good work!
28 octobre 2026
Avis spontané
Réponse de Glasswise Secondary Glazing
Thank you so much for such a wonderful review. Angled windows can be a real challenge, so we’re thrilled we could find the right secondary glazing solution for you, and that you’re so happy with how it turned out.
It’s lovely to hear the windows look minimal and still do a brilliant job of reducing the noise. That balance is exactly what we work towards on every installation, and we’ll be sure to pass your kind words on to the team. Thanks for choosing Glasswise
Perfect secondary glazing
I had secondary glazing installed by Glasswise on three windows in my flat. Great results having reduced about 80% of road noise in my opinion and I am already experiencing the flat as warmer as well. Great experience, very professional and the glazing looks great. Can definitely recommend!
26 octobre 2026
Avis spontané
Réponse de Glasswise Secondary Glazing
Thanks for your review Lucy ! Glad to hear your happy, Let us know if you ever need help filling the ventilation vent/hole in the wall as this will give you a even greater reduction in sound !
Second time using glasswise for…
Second time using glasswise for secondary glazing. We are really happy with windows and sound reduction achieved, we would definitely recommend to anyone looking to install secondary glazing.
15 octobre 2026
Avis spontané
Réponse de Glasswise Secondary Glazing
Thank you so much for coming back to us for a second time. It means a great deal that you’ve trusted Glasswise with your secondary glazing again.
We’re delighted you’re happy with the windows and the sound reduction you’ve achieved. That’s exactly what we aim for on every installation. Thank you as well for recommending us to others. As a small business, that support really does make all the difference.
If you ever need anything in the future, we’ll always be happy to help.
Kind regards,
The Glasswise Team
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