How To Install A Skylight On A Corrugated Metal Roof

If the skylight is curb mounted then you will need to lift window over the curbs and rest it on top of the sills.

How to install a skylight on a corrugated metal roof.

Mark an outline along the outer edges of the fins. Place corner pieces where panels will meet bends at the edge of the roofing. Rest the skylight against the bottom edge of the opening first and then lower the light onto the roof. Step 1 cut the panels to the desired length.

Install 6 in wide strips of a self sticking waterproof underlayment. Allow for a minimum of 18 inches 46 cm if you need to lap to complete the run. Paint or prime cut edges to prevent rust. Circular saw 2 x research source slower than angle grinder but follow same step 2 pre drill holes on the ridges.

Align the grooves on the skylight fins with the grooves on the corrugated roofing. Angle grinder 1 x research source the fastest option. However the way your roof is flashed against the skylights will be one of the most crucial aspects of the installation process. This underlayment will direct any water that may get through the metal flashing onto the roofing felt.

Place the skylight unit on the roof at the desired location. Wear hearing and eye protection. Set the skylight unit aside. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.

Mark an outline along the outer edges of the fins with a felt tip marker. Some panels have pre drilled holes. Install from the bottom up lapping each piece on top of the lower one. If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.

Skylights for corrugated metal must be slid under the upper flap of the roof. Place the skylight unit on the roof at the desired location. If you have to replace shingles around a skylight examine the old flashing. This clip shows how you can easily install a polycarbonate.

This guide presented by kyal kara from the block demonstrate the basics to installing velux skylights into a pitched metal roof with custom flashing whi. Up to 20 times greater impact resistance the highest light transmission rates the lowest yellowing index the highest load. Designed specifically to match up with sm rib and pbr r panels. Align the grooves on the skylight fins with the grooves on the corrugated roofing.

Most panels come up to 32 feet 9 8 m in length. High performance glazing that stands up to punishing exterior applications. 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.