Skylight Calculator

Skylight Count, Flashing Material & Installed Cost

Size skylights from the room area and the daylight target, then estimate flashing lengths, ice-and-water membrane and the installed cost including framing and interior finishing. The unit itself is often the smaller part of a skylight quote — the light shaft, flashing kit and interior work usually cost more. Use the result alongside the flashing calculator and the skylight installation cost guide before requesting quotes.