How To Install A Skylight On A Corrugated Metal Roof

Skylights for corrugated metal must be slid under the upper flap of the roof.

How to install a skylight on a corrugated metal roof.

Polycarbonate panels offer multiple advantages over traditional fiberglass panels. Step 1 cut the panels to the desired length. Rest the skylight against the bottom edge of the opening first and then lower the light onto the roof. Mark an outline along the outer edges of the fins with a felt tip marker.

If yours do not. Wear hearing and eye protection. Place the skylight unit on the roof at the desired location. Some panels have pre drilled holes.

Align the grooves on the skylight fins with the grooves on the corrugated roofing. Set the skylight unit aside. Paint or prime cut edges to prevent rust. High performance glazing that stands up to punishing exterior applications.

Most panels come up to 32 feet 9 8 m in length. Place corner pieces where panels will meet bends at the edge of the roofing. Mark an outline along the outer edges of the fins. Place the skylight unit on the roof at the desired location.

Allow for a minimum of 18 inches 46 cm if you need to lap to complete the run. Align the grooves on the skylight fins with the grooves on the corrugated roofing. 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. Install 6 in wide strips of a self sticking waterproof underlayment.

Angle grinder 1 x research source the fastest option. This clip shows how you can easily install a polycarbonate. Up to 20 times greater impact resistance the highest light transmission rates the lowest yellowing index the highest load. Install from the bottom up lapping each piece on top of the lower one.

Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging. Circular saw 2 x research source slower than angle grinder but follow same step 2 pre drill holes on the ridges. This underlayment will direct any water that may get through the metal flashing onto the roofing felt. 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.

However the way your roof is flashed against the skylights will be one of the most crucial aspects of the installation process. If the skylight is curb mounted then you will need to lift window over the curbs and rest it on top of the sills. Designed specifically to match up with sm rib and pbr r panels.