As with any penetration in a residential roof, properly flashing a skylight is crucial to the longevity of a leak free skylight. There are curb mounted and deck mounted skylights. In this blog we are going to talk about the curb mounted skylight.
Curb mounted means a box-like structure constructed with 2” x 4” or 2” x 6” lumber that elevates the skylight off the roof deck. The curb allows the installer to install metal flashing for long lasting, water shedding, and leak free installation.
- Install Ice & Water shield/peel & stick underlayment down the curb & onto the roof deck
- Install top flashing, step flashings (properly sized for the shingle) and bottom flashing
- Be sure to lace the step flashing with the course of shingles
- Place skylight dome on the curb and secure with proper fasteners
The curb mounted skylight is a nice addition to allow natural light to a room. If you have consulted and hired a reputable roofing contractor the flashing on the skylight should give you peace of mind from leaks in the future and natural light for years to come. I hope this helps with your next roofing project.