Flashing A Skylight On A Flat Roof

Install rigid insulation inside the light tunnel to prevent condensation and heat loss.

Flashing a skylight on a flat roof.

Use a single piece of flashing in the front and step flashing up the sides of the curb. 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. That s when the rubber roof gets attached to the flashing with adhesives. Velux standard flashing is available in one colour only.

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. 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. Epdm uses contact cement to glue the rubber to the metal. Step 6 install flashing and insulation.

In the case of epdm rubber the flashing on the right will not work. That is one of the more difficult areas to accomplish and to make sure it would last a long time without leaking. The flashing on these skylights are one piece. The corners of the flashing should be welded.

One solid piece of flashing. Welding the corners where the flashing meets the curb is necessary. Velux standard flashing has no option to match roof colour. Proper flashing of a skylight is critical.

Flat roof skylights should have one continuos piece of metal flashing around them. It is critical to ensure that the roof membrane is properly attached to the flashing of the skylight. When a skylight is installed on a flat roof then the flashing around it should be one solid piece. We had to tear out all of the old flashing.

The top head flashing is one piece that wraps around the sides. It is essential when installing a skylight on a flat roof with curb flashing that is in one piece. Skyspan custom pitch adaptor flashings for velux pitched roof skylights and for velux flat roof skylights are available. The skyspan pitch adaptor flashing lifts the skylight on the top side so that it s pitched greater than 15.

Preparing the flashing for a new rubber roof. This fabricated piece has soldered and sealed seams and corners. Just as crucial for a watertight seal the flashing must also be clean from debris or tar. Fit and install the next row of shingles leaving about 1 2 in.

Install sheet metal flashing over a water and ice barrier around the perimeter of the skylight. This is what the curb flashing looks like before the membrane is attached. If you have to replace shingles around a skylight examine the old flashing.