How To Flash A Skylight On Roof

Custom flashing around a triangle skylight on a metal roof.

How to flash a skylight on roof.

So notorious that a major manufacturer velux developed flashing kits that could be shipped with the skylight to eliminate origami gone wrong on the roof. Next slip individual pieces of step flashing under the shingles. Secure by nailing the flashing to the roof. Drive roofing or flashing nails horizontally into the skylight not vertically into the roof.

Demonstrating how to properly flash a skylight. Install the bottom flashing a single piece that wraps partway around the skylight and sits on top of the roof shingles figure 3. Number 5 shows how the final step counterflashing is integral to the skylight and covers the upper edges of the roof flashing. Flashing is the key to a skylight that won t leak water into the roof cutting a hole in a perfectly water tight roof is asking for trouble and true to form skylights are notorious for leaking.

Once the metal flashings are ready place the pieces between the roof and skylight above the roof and under the skylight. This skylight shows the correct flashing technique to make it waterproof. 4 install bottom step flashing. Some skylights come with a kit and you don t have to build the aprons and install step fl.

Step 3 install the metal flashing. Numbers 1 4 correspond to the 4 photos above. Custom flashing around a triangle skylight on a metal roof. Then fold the tabs on all sides of the skylight and screw them down.