Flashing A Skylight On A Flat Roof

The corners of the flashing should be welded.

Flashing a skylight on a flat roof.

In the case of epdm rubber the flashing on the right will not work. 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. The flashing on these skylights are one piece. It is essential when installing a skylight on a flat roof with curb flashing that is in one piece.

On this project adam was called out to inspect leaks around a skylight. Install sheet metal flashing over a water and ice barrier around the perimeter of the skylight. Install rigid insulation inside the light tunnel to prevent condensation and heat loss. Velux standard flashing is available in one colour only.

When a skylight is installed on a flat roof then the flashing around it should be one solid piece. Flat roof skylights should have one continuos piece of metal flashing around them. That s when the rubber roof gets attached to the flashing with adhesives. When a skylight is installed on a flat roof there will come a time when water is pooling around the curb flashing of the skylight.

This fabricated piece has soldered and sealed seams and corners. Proper flashing of a skylight is critical. Skyspan custom pitch adaptor flashings for velux pitched roof skylights and for velux flat roof skylights are available. That is one of the more difficult areas to accomplish and to make sure it would last a long time without leaking.

Velux standard flashing has no option to match roof colour. Preparing the flashing for a new rubber roof. Fit and install the next row of shingles leaving about 1 2 in. Welding the corners where the flashing meets the curb is necessary.

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. Use a single piece of flashing in the front and step flashing up the sides of the curb. The top head flashing is one piece that wraps around the sides. Skylights meant for a pitch roof will have step flashing.

The skyspan pitch adaptor flashing lifts the skylight on the top side so that it s pitched greater than 15. Step 6 install flashing and insulation. Epdm uses contact cement to glue the rubber to the metal. They are meant to be installed on a flat roof.

It is critical to ensure that the roof membrane is properly attached to the flashing of the skylight. This is what the curb flashing looks like before the membrane is attached. One solid piece of flashing.