DETAILED NOTES ON SASH WINDOW DRAUGHT PROOFING

G – Ventrolla Perimeter Sealing Process (VPSS). The Ventrolla Perimeter Sealing System (VPSS) comprises numerous draught-proofing components that work alongside one another to seal the complete perimeter of your sash window. These involve the sealing technique mounted earlier mentioned the top sash, both throughout the sash itself or in a few