I hope that this post has cleared your questions on what's a window sash and why can it be crucial. If you need more valuable facts visit styleofhome.com. It has become popular for sash windows to generally be composite of their design, by using a timber interior and aluminium cladding https://acoustic-performance12208.activablog.com/35192033/a-secret-weapon-for-sash-window-draught-proofing