11.2Windows, doors, skylights and basement or cellar hatchways shall be maintained in good repair, weather-tight and reasonably draught-free, to prevent heat loss and infiltration by the elements.
11.2 窗户、门、天窗和地下室或地窖舱口应保持良
维修、防风雨和合理无风,以防止热量散失和自然因素的渗透。