A peel-and-stick membrane under the flashing guarantees that the skylight won’t leak—ever
Skylight installations can be fraught with concerns, not the least of which is introducing the potential for water leakage and subsequent related problems (mold, rot, damage). Contributing editor Mike Guertin shares his technique for installing a skylight, which promises no leaks with the use of a peel-and-stick (or self-adhesive) membrane under the flashing. Guertin’s step-by-step method begins with creating the opening for the skylight. Next, he installs the peel-and-stick membrane. Finally, he installs and flashes the skylight. Although the project featured in the article is a retrofit, Guertin says that the process is the same on a new house.