Waterproofing

How do I repair a leak around a roof skylight?

 

A leak around a skylight is usually due to improper flashing, or having the felt and/or shingles improperly installed around the skylight. Or it could be that you have a leak in the roof at some point above the skylight, and it is just showing up at the skylight because that is the first place the water has to get out. you'll need to remove enough roofing to locate the problem. Tracking down a roof leak "in person" is usually pretty difficult, at best. To try to do it on-line, sight unseen, is next to impossible!!

 

Lefty told you correct as far as the shingleing goes. However, there is one more thing around a skylite that will leak. That is the skylight gasket. It is a rubber ring around the skylight. These gaskets dry out and then have to be replaced. A gasket will last from 3 to 7 years depending upon the latitude in the country where you live.
It is certain sunlight rays that dry it out. Best to have an installer do the gasket then you have a warranty. They make a oil type product that your supposed to paint on the gasket every two years to prolong its life. It works pretty good. Good Luck

 

Jack is correct, as usual. But then too, it depends on the stylr of skylite you have. The 3 in my house are what are called 'curb-mounted'. Sitting on top of the roof sheathing is a 2X6 'box', on edge. The frame of the skylite sits on top of that box, and the skylite's frame extends down about an inch below the top of the curb. The seal between the curb and the skylite frame is important to prevent air leaks, but has nothing to do with a water leak. (Water isn't going to run uphill an inch just to find it's way in.) I was thinking in terms of that style of a skylite, that's why I didn't mention that being a possible leak source.