Roof Skylight Flashing Detail

The installer starts at the bottom of the skylight with the sill flashing.

Roof skylight flashing detail.

Some skylights come with a kit and you don t have to build the aprons and install step fl. We offer a variety of skylight flashing systems to ensure a weathertight fit for virtually all roof types and slopes. Skylight flashing installation details. Step flashing is laced over each course of asphalt shingles cedar shakes and shingles and most alternative steep sloped roofing materials no more than 1 above the weather exposure of the roofing being installed.

Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time. Properly installing a skylight requires detailed skylight flashing. After a row of roofing material is installed over the bottom edge of the underlayment the sill flashing is placed at the bottom of the skylight. That is one of the more difficult areas to accomplish and to make sure it would last a long time without leaking.

Secure by nailing the flashing to the roof. The shingles must be installed close enough to the skylight so that the bottom flashing has proper coverage. Once the metal flashings are ready place the pieces between the roof and skylight above the roof and under the skylight. Step 4 cover the gaps.

That s when the rubber roof gets attached to the flashing with adhesives. Here we provide details about framing the skylight opening constructing the skylight well or chute sealing the skylight flashing around skylights to avoid leaks and protecting from ice dams and ice dam leaks at skylights. Then fold the tabs on all sides of the skylight and screw them down. First remove the skylight s counterflashing.

Epdm uses contact cement to glue the rubber to the metal. Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. In other words no more than 1 above the butt of the roofing material of the next course.

If it s carefully removed when the old roof is torn off it should be reusable. When a skylight is installed on a flat roof then the flashing around it should be one solid piece. Skylight flashing systems are not required for pan flashed skylights or velux sun tunnel skylight. If not you ll have to buy new flashing 50 to 100 either from the skylight manufacturer or from a roofing company that has a metal fabrication shop look under roofing in the yellow pages or online.

A crucial part of our complete system.