Home health check
Traditional casements have been around for centuries, so to preserve them and keep them in working order, it’s important to give them some TLC
Property expert Roger Hunt advises on metal windows
Metal windows have been an important element in buildings since the 16th century, when simple wrought-iron frames and casements contained leaded lights. By the 1920s, steel windows were fashionable, with their contemporary design a notable feature of
Art Deco homes. They were sometimes designed in the form of curved ‘suntrap’ bays.
Stronger and potentially more durable than those made of wood, metal windows offer the advantage of slender profiles that help create light-filled interiors and are valuable architectural features. The disadvantage is the high thermal conductivity of traditional metal windows, which has often led them to be associated with cold interiors, condensation and, if not properly maintained, rust.
Corrosion often occurs in localised areas where moisture collects, such as at the bottom of frames and casements. Distortion of the metal and a build-up of excessive paint can result in draughts and the unwelcome result of wind-driven rain. ➤