Kitchen extensions at the back of a Quorn house vary: a flat felt or membrane roof, a low-pitch slate roof, or occasionally a glazed lean-to. Each has its own way of taking a rooflight.
On a flat roof, the opening needs a raised upstand, called a kerb, so water cannot run into it. The kerb is built from timber or an insulated shell, and the waterproof covering wraps over it to meet the frame. On a pitched roof, the rooflight sits within the slope and is flashed to the covering, as with any roof window.
Both approaches need the existing roof structure to be understood. We look at the joists or rafters in the ceiling void, find where the opening can go without cutting more timber than necessary, and agree the position with you at the survey.
Keeping the kitchen usable
A kitchen job is easier on a family than a bedroom job, because the room can be cleared and sealed off. We lay protection on the floor and counters, cover the units below the opening, and clean up each day. If a day of dust and noise is a problem, mention it when you book and we will plan around it.
A flat roof rooflight installation typically takes a short time on the roof, and the ceiling is finished afterwards. The covering is the part to watch, as that is what keeps water out for years.