How To Install A Skylight On A Flat Roof Video

Install header joists perpendicular to the existing roof joists at around the skylight hole.

How to install a skylight on a flat roof video.

A step by step tutorial of how to replace a skylight on an existing flat roof of asphalt composition. Drop plumb lines from each corner of the hole to verify that it is in the right spot. Proper flashing of a skylight is critical. It is critical.

The curb flashing of a skylight is what could leak. We had to tear out all of the old flashing. On this project adam was called out to inspect leaks around a skylight. Scrape off the roofing material at the skylight site and cut open the roof with a saw.

When a skylight is installed on a flat roof then the flashing around it should be one solid piece. Install from the bottom up lapping each piece on top of the lower one. Step 4 frame skylight. If necessary frame the light tunnel with 2x6 boards.

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. Install 6 in wide strips of a self sticking waterproof underlayment. Watch this video to see how to install this skylight and the various steps to securing the roof window. This underlayment will direct any water that may get through the metal flashing onto the roofing felt.

Epdm uses contact cement to glue the rubber to the metal. Skylights for flat roofs. 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.