Glasswise

About Glasswise

London's secondary glazing specialists - discreet, made-to-measure units that cut noise, draughts and heat loss while keeping your original windows untouched.

Glasswise is a London-based secondary glazing specialist, helping homeowners, landlords and property managers make their windows warmer, quieter and more efficient - without replacing them.

Our discreet, made-to-measure secondary glazing fits neatly to the inside of your existing windows, creating an insulating air gap that dramatically reduces outside noise, eliminates draughts and cuts heat loss. It's the ideal solution for period and listed properties across London, where original windows can't or shouldn't be altered, and for anyone living near busy roads, railways or flight paths.

We install secondary glazing for all window styles - including sash, casement and bay windows - with a range of glass options for acoustic and thermal performance. Every installation is tailored to your property and fitted cleanly from the inside, usually in a single visit.

Serving London and the surrounding areas, Glasswise combines expert advice, quality materials and a fully bespoke fit. Whether you want to silence traffic noise, warm a draughty room, or improve energy efficiency in a conservation area, we'll recommend the right secondary glazing for your home.

Get in touch for a free quote, or visit our website to learn more.

- Secondary glazing supply and installation.
- Bespoke, made-to-measure secondary glazing.
- Free site surveys and quotations.
- Professional measuring and fitting.
- Repairs, servicing and replacement glass for existing secondary glazing.
- Trade supply supply-only units to builderscontractors.
- Thermal insulation secondary glazing.
- Draught-proofing and draught elimination.
- Heat-loss reduction and lower energy bills.
- Condensation reduction and damp prevention.
- Low-E energy-saving glass options.
- Soundproofing secondary glazing.
- Traffic and road-noise reduction.
- Railway and Underground noise reduction.
- Aircraft flight-path noise reduction.
- Acoustic glass and laminated glass specification.
- Recording studio and home-cinema soundproofing.