Our vertical sliding sash windows have a timeless elegance, crafted with attention to detail to ensure the authentic appearance of original Timber Sash Windows of a distinguished era to retain the original character of your property.
Thermaseal Sash Windows not only emulate the aesthetics of their traditional timber equivalent, they also offer many additional benefits.
- Front to back frame dimensions to match existing sash windows
- Deep bottom rail option
- Sash tilting for easy cleaning
- BFRC energy rated
- Full range of designs available
- 10 year guarantee