Flashing Around Skylight Metal Roof

Skylights for corrugated metal roofs are different from those for shingle or tile roofs.

Flashing around skylight metal roof.

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. For those who are unfamiliar with the term flashing it is a thin material usually galvanized steel that is used to direct water away from certain areas of the roof. A skylight in a metal roof must be curb mounted in order to be properly flashed. Patented sill flashing features pliable pleats that form to most types of tile.

Side and head flashing pieces form a gutter to direct water away from the skylight. Flashing is installed to surround roof features such as vents chimneys and skylights. However the way your roof is flashed against the skylights will be one of the most crucial aspects of the installation process. Skylight flashing systems are not required for pan flashed skylights or velux sun tunnel skylight.

If it s carefully removed when the old roof is torn off it should be reusable. It s possible for an experienced installer to retrofit flashing and install a typical skylight on corrugated. Then fold the tabs on all sides of the skylight and screw them down. Repeat to install the flashing to all sides of the skylight frame.

If you have to replace shingles around a skylight examine the old flashing. It cannot be flush mounted. Secure by nailing the flashing to the roof. Most residential skylights sit on a raised curb made watertight with metal flashing.

Flashing a skylight may involve sealant as one line of defense against water infiltration but above all there must be good flashing. We offer a variety of skylight flashing systems to ensure a weathertight fit for virtually all roof types and slopes. Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time.