How To Flash Sky Light On Metal Roofing

How to put a skylight in a corrugated metal roof 1.

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. Metal roofing manufacturers can explain how to flash their products against skylights and other protrusions. Once the metal flashings are ready place the pieces between the roof and skylight above the roof and under the skylight.

We then roll out all the air trapped to make sure the rubber membrane is fully attached to the metal. Adhere the membrane to the metal surface. Flashing around a skylight while working with the matterhorn tile metal roofing system as explained by matterhorn s ben degraaf. Install 6 in wide strips of a self sticking waterproof underlayment.

The curb allows the installer to install metal flashing for long lasting water shedding and leak free installation. We use karnak 81 or karnak 66 trowel grade. Deduct the width of the fins on each side of the skylight and mark another outline on the roof to define the area to. It cannot be flush mounted.

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. A skylight in a metal roof must be curb mounted in order to be properly flashed. Align the grooves on the skylight fins. Secure by nailing the flashing to the roof.

Install ice water shield peel stick underlayment down the curb onto the roof deck. Flashing a skylight may involve sealant as one line of defense against water infiltration but above all there must be good flashing. We smear the karnak the entire surface of where the rubber membrane will cover and then place the membrane in place. Repeat to install the flashing to all sides of the skylight frame.