PVCu Sliding Sash Windows
Sliding sash windows open and close vertically and PVCu sash windows combine traditional design with modern performance.
Not all sash windows are the same. There are good reasons for choosing sash windows from Douglass Windows:
Appearance with Performance
Advanced technology linked to ‘period’ design means that our sash windows combine the qualities you need (superior strength, thermal properties and weathering performance) with the character you want.
Strength
Our sash window frames are internally reinforced with steel, creating a PVC-u profile that does not degrade, bend or warp.
The sliding sash, fitted by Douglass Windows, has passed the rigorous BS7950 (revision 32007) test for Enhanced Security. This test is about durability, strength and security of hardware.
Colour Fast and Weather Resistant
Our PVC-u profiles contain a UV light resistant pigment (which maintains the original colour) and a high impact modifier (to give added strength and withstand cold weather).
Energy Performance
Our windows are designed to keep you warm and keep your heating bills down with:
- Every window is CERTIFIED with the BFRC –window energy rating
- Wool infill strip to greatly enhance appearance
- Factory glazed with ‘Low-E’ 1.1 U Value argon gas filled double glazing or triple glazing with black Swiss ‘V’ warm edge spacer bar
- All sashes are internally glazed
- Exclusive sealing system in every window for air tightness
- Decorative horns for the authentic look
- All sashes balances are secured by a unique balance retaining clip
- Tilting inward sashes with tilt restrictors for easy cleaning
Clear Information and Easy Choice 
You can use the BFRC ‘traffic light’ Window Energy Ratings scheme to select windows with the energy performance that suits your circumstances.
Accessories:
