To fix a leaking skylight.
Roof leak below skylight.
The other issue is if the installer nailed the shingles through the flashing then those nails could start rusting and cause a skylight to leak.
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.
The leak might not be a leak at all but the result of condensation forming on the inside of the glass during cold weather.
It could also be caused by an unrelated roof leak above the skylight that is finding its way out through the ceiling opening around the skylight.
A leak that is at the peak of your roof may trickle down and soak the drywall next to your skylight.
No matter how well your skylights were installed it is still possible for them to leak during heavy rains.
However proper repairs will require removing shingles near the skylight installing appropriate flashing and reinstalling new shingles in the area.
During installation each skylight essentially creates a big hole in an otherwise uniform roof surface.
That s another good reason to call a roofer.
These skylight leaks should not be blamed on faulty product design although at some leaky skylights we find a combination of multiple failures.
If the skylight leak is at the roof flashing it may be possible to make temporary repairs using roof flashing cement around the perimeter of the unit.
Roofs leaks sometimes move through the layers of the roof and end up far from where the real problem is.
Leaks at skylights left unattended can lead to costly structural damage rotted roof sheathing rotted roof framing and wet moldy insulation as well.
In many cases the flashing is the cause of leaks around skylights.
Changing the flashing is a lot cheaper than purchasing a brand new skylight.
On a shingle roof the flashing will get clogged with debris and in turn the water will get diverted under the shingles where it could start leaking.
Especially as your home ages a bit.
The best solution in this case is to slope or build the roof up so water will not pool.
Although sometimes the source of the skylight leak is not the skylight itself.
There are several possibilities as to why your skylight is leaking.
Whether you ve got a flat roof a pitched roof or a contemporary style roof wear and tear will still happen.
Skylight leaks in heavy rain are a common source for roof leaks.
