Flashing A Skylight On A Flat Roof

Fit and install the next row of shingles leaving about 1 2 in.

Flashing a skylight on a flat roof.

Step 6 install flashing and insulation. That is one of the more difficult areas to accomplish and to make sure it would last a long time without leaking. Skylights meant for a pitch roof will have step flashing. Skylights are typically manufactured with their own integral metal flashing a flat metal flange that extends from the body of the skylight and tucks underneath the roof shingles.

They are meant to be installed on a flat roof. Flat roof skylights should have one continuos piece of metal flashing around them. Preparing the flashing for a new rubber roof. Install sheet metal flashing over a water and ice barrier around the perimeter of the skylight.

Epdm uses contact cement to glue the rubber to the metal. Velux standard flashing has no option to match roof colour. The flashing on these skylights are one piece. The corners of the flashing should be welded.

It is critical to ensure that the roof membrane is properly attached to the flashing of the skylight. Velux standard flashing is available in one colour only. This fabricated piece has soldered and sealed seams and corners. The skyspan pitch adaptor flashing lifts the skylight on the top side so that it s pitched greater than 15.

Install rigid insulation inside the light tunnel to prevent condensation and heat loss. When a skylight is installed on a flat roof then the flashing around it should be one solid piece. In some cases a skylight is set up on a curb that is flashed with continuous flashing along the base step flashing up the sides and saddle flashing across the top. On this project adam was called out to inspect leaks around a skylight.

If you have to replace shingles around a skylight examine the old flashing. This is what the curb flashing looks like before the membrane is attached. The top head flashing is one piece that wraps around the sides. Use a single piece of flashing in the front and step flashing up the sides of the curb.

One solid piece of flashing. Proper flashing of a skylight is critical. Just as crucial for a watertight seal the flashing must also be clean from debris or tar. Welding the corners where the flashing meets the curb is necessary.

Skyspan custom pitch adaptor flashings for velux pitched roof skylights and for velux flat roof skylights are available. It is essential when installing a skylight on a flat roof with curb flashing that is in one piece. In the case of epdm rubber the flashing on the right will not work.