Quote Originally Posted by dr. d View Post
for the best of me, i also do not understand why skylights leak so reliably often.
perhaps the material is too brittle for long-term water resistance strength...?
Probably differences in thermal expansion between dissimilar materials. The hot sun dries out the sealant. The movement between the skylight and the roof breaks it off.

Our ceiling is kinda thin and I can hear the long spans snapping as the temps rose last summer. Not worried about leaks that much though since it's fairly new. Problem is the balcony door and windows are not weather proof and water gets in when the wind is strong.