Flat Roof Skylight Flashing

Epdm uses contact cement to glue the rubber to the metal.

Flat roof skylight flashing. It is essential when installing a skylight on a flat roof with curb flashing that is in one piece. In the case of epdm rubber the flashing on the right will not work. The curb flashing of a skylight is what could leak. Skylight flashing systems are not required for pan flashed skylights or velux sun tunnel skylight.

Flat roof skylights should have one continuos piece of metal flashing around them. When a skylight is installed on a flat roof there will come a time when water is pooling around the curb flashing of the skylight. The corners of the flashing should be welded. Preparing the flashing for a new rubber roof.

All seams are welded unlike glued. Welding the corners where the flashing meets the curb is necessary. That is one of the more difficult areas to accomplish and to make sure it would last a long time without leaking. One solid piece of flashing.

Just as crucial for a watertight seal the flashing must also be clean from debris or tar. When a skylight is installed on a flat roof then the flashing around it should be one solid piece. They are meant to be installed on a flat roof. It is critical to ensure that the roof membrane is properly attached to the flashing of the skylight.

When flat roof doesn t have good drainage then water could pool around a skylight causing a leak in the weakest part of the roof. That s when the rubber roof gets attached to the flashing with adhesives. Skylights meant for a pitch roof will have step flashing.