Sapphire Windows uses world-class systems developed by Deceuninck. Our UPVC Windows have been designed with emphasis on safety and simplicity. Innovative hardware technology ensures that you have the best performing window all round.
Absolute Top in Insulation
Engineering tests carried out in Germany have shown that our UPVC windows are able to reduce sound transmittance (soundproofing) and achieve a maximum Sound Transmission Class (STC) of 45. A maximum heat transfer coefficient U=1.4w/m2K is also possible, which is up to 4 times better than traditional aluminium windows.
You Decide the Function
The surrounding environment provides light, warmth and fresh air. With our UPVC Soundproof Windows, you will be able to let these desirable elements in when required, yet remain secure and well insulated both thermally and acoustically when closed.
Multi-point locking mechanism
Dual Seal Technology
Integrated Water Drainage
Reinforced Galvanised Steel
Flush Lock (Sliding)
All UPVC Windows products come with our Sapphire Windows Guarantee for peace of mind.