Flat rooflights

A fixed flat rooflight is a straightforward way to bring controlled daylight into kitchens, utility rooms and circulation cores where the roof build-up stays near-horizontal. The insulated unit sits on a prepared upstand with drained outer seals, so performance depends on curb height, falls and how the internal lining meets the frame.

On domestic extensions we typically work from opening sizes, structural bearings and target U-values, then align outer pane exposure class, cavity width and inner leaf safety glass with the room below. Solar gain, cleaning access and any guarding loads at the kerb are checked early so the glazing schedule matches the architect’s General Arrangement.