How To Flash Sky Light On Metal Roofing

Install 6 in wide strips of a self sticking waterproof underlayment.

How to flash sky light on metal roofing.

This underlayment will direct any water that may get through the metal flashing onto the roofing felt. If you have to replace shingles around a skylight examine the old flashing. Then fold the tabs on all sides of the skylight and screw them down. Flashing a skylight may involve sealant as one line of defense against water infiltration but above all there must be good flashing.

Once the metal flashings are ready place the pieces between the roof and skylight above the roof and under the skylight. We use karnak 81 or karnak 66 trowel grade. Install ice water shield peel stick underlayment down the curb onto the roof deck. Secure by nailing the flashing to the roof.

How to put a skylight in a corrugated metal roof 1. Repeat to install the flashing to all sides of the skylight frame. Align the grooves on the skylight fins. Curb mounted means a box like structure constructed with 2 x 4 or 2 x 6 lumber that elevates the skylight off the roof deck.

It cannot be flush mounted. Deduct the width of the fins on each side of the skylight and mark another outline on the roof to define the area to. We smear the karnak the entire surface of where the rubber membrane will cover and then place the membrane in place. Flashing around a skylight while working with the matterhorn tile metal roofing system as explained by matterhorn s ben degraaf.

A skylight in a metal roof must be curb mounted in order to be properly flashed. Install from the bottom up lapping each piece on top of the lower one. The curb allows the installer to install metal flashing for long lasting water shedding and leak free installation. We then roll out all the air trapped to make sure the rubber membrane is fully attached to the metal.