Anderson Skylight Window Leaks

Unscrew the fasteners holding the cover of the skylight window on with an appropriately sized driver.

Anderson skylight window leaks.

It is pre molded seamless and waterproof polyur. Sloped glazing such as roof skylights probably has historically had more leaks into the roof structure due to improper roof flashing than other window failure causes. Then lift it off and keep it to one side. I also see water stains on the bottom of the wooden window frame suggesting there has been wind blown rain or snow melt leakage too.

With a scraper slowly remove the weather stripping around the skylight cover and the curb. They leaked brand new. At the time of installation 3 years ago our contractors had a anderson rep out to replace seals in 4 or 5 of our brand new skylights. Our new anderson skylights leak.

To fix a leaking skylight. Anderson rep said seal was defective. 1 lift up the shingles next to the skylight one at a time and brush out any dirt and debris. Start by checking that the windows are basically square in the frame.

I think your anderson slider window has more than air leaks. 2 using a caulking gun loaded with a tube of roofing cement force the mastic up under the shingle where the metal flashing meets the roofing felt the thick black paper under the roofing material. Then press down on the roofing shingles to seal them tight. Original installation squareness.