Properly installing a skylight requires detailed skylight flashing.
How to flash a skylight on roof.
Install the bottom flashing a single piece that wraps partway around the skylight and sits on top of the roof shingles figure 3.
Next slip individual pieces of step flashing under the shingles.
Drive roofing or flashing nails horizontally into the skylight not vertically into the roof.
Custom flashing around a triangle skylight on a metal roof.
Demonstrating how to properly flash a skylight.
Step 3 install the metal flashing.
Secure by nailing the flashing to the roof.
Some skylights come with a kit and you don t have to build the aprons and install step fl.
Numbers 1 4 correspond to the 4 photos above.
Custom flashing around a triangle skylight on a metal roof.
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.
Finally the top flashing gets interwoven with the underlayment that covers the roof surface and the roofing material is added back around the skylight with a 2 4 inch gap between the top of the flashing and the bottom of the shingles.
Then fold the tabs on all sides of the skylight and screw them down.
4 install bottom step flashing.
Repeat to install the flashing to all sides of the skylight frame.