THE 2-MINUTE RULE FOR SASH WINDOW DRAUGHT PROOFING

Sash windows require a 3mm gap between sash and body to function without the need of friction protecting against clean journey. Over a window that is above painted, twisted, and warped the tolerance could possibly be much more like 5mm in destinations to permit passage with the sash at “sticky factors”.Under 1 / 4 of the heat missing by means o