On Nov 17, 11:39*am, tom wrote:
On Nov 17, 9:25*am, Mikepier wrote:

If you are putting in a new roof on top of an old roof, and you also
want to put in a skylight, does the flashing of the skylight just rest
on the old roof, then put the new roof on top of the flashing, or
should the entire flashing go under the old roof/paper and all?
The reason why I ask is I have been trying to troubleshoot a chronic
leak in in one of my skylights. And today I removed part of the
sheetrock on the side and discovered that whoever did this job some
years ago just rested the skylight on the old roof, then installed the
new roof on top of the flashing. Something tells me this is not right
and the water is finding its way through the old roof *from another
penetration up higher and working its way down to the skylight.
The actual flashing when viewed from the top looks fine. I can't find
any thing that jumps out at me that indicates a problem.

The skylight should be flashed for the new roof. I highly recommend a
curb-mounted, properly step-flashed type of skylight, not the "self-
flashing" type, The self flashing kind relies only upon tar and roof
pitch to keep water from penetrating into the structure. Bad juju. Tom

Then the only true way to fix it is to strip everything down and get a
new roof, right? I'm guessing this roof is 15-16 years old. I've been
here four years.