Air Leakage

Also known as ‘air infiltration’, this refers to how well a window or door seals the inside from the out


Used by WERS when calculating 'stars'

Rylock products typically feature at least two seals on every opening element

Each product is glazed with inner & outer seals to prevent draughts & glass rattling

4 Point compression locks on hinged doors compress the seal properly

Bar Operated Awnings & Casements use secondary locks to seal shut effectively