THE 2-MINUTE RULE FOR SASH WINDOW DRAUGHT PROOFING

Sash windows require a 3mm gap between sash and frame to function with no friction protecting against smooth vacation. On a window that's more than painted, twisted, and warped the tolerance is likely to be a lot more like 5mm in spots to allow passage of the sash at “sticky factors”.Below 1 / 4 of the heat misplaced as a result of a standard c