Flashing Skylights On Steel Roofs

It cannot be flush mounted.

Flashing skylights on steel roofs.

It is found attached to plumbing vent stacks chimneys fan vents and roof valleys. Standard skylights for metal roofs tend to be curb mounted. Open valleys have metal flashing to protect this critical area of the roof. A skylight in a metal roof must be curb mounted in order to be properly flashed.

Where to place skylights. If it s carefully removed when the old roof is torn off it should be reusable. Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time. 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.

Most residential skylights sit on a raised curb made watertight with metal flashing. Velux edm deck mount skylight flashing is designed velux edm deck mount skylight flashing is designed to work with metal roofing. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Flashing a skylight may involve sealant as one line of defense against water infiltration but above all there must be good flashing.

The sill apron features pliable pleats that form to the roof and the kit includes adhesive underlayment that provides an additional layer of water protection for a weathertight installation. It s possible for an experienced installer to retrofit flashing and install a typical skylight on corrugated metal. Epdm uses contact cement to glue the rubber to the metal. What you ll need although roof flashing is merely the addition of a flattened galvanized steel or aluminum sheet over joints in the roof it plays a critical role in the defense against water leaks.

Today it s possible to get curbed skylights for metal roofs in a growing variety of sizes and shapes. A raised curbed structure is mounted in into the space cut out of the metal roofing material and the skylight is attached to it. Skylight flashing systems are not required for pan flashed skylights or velux sun tunnel skylight. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.

That s when the rubber roof gets attached to the flashing with adhesives. Metal roofing manufacturers can explain how to flash their products against skylights and other protrusions.