There are several possibilities as to why your skylight is leaking.
Roof leak below skylight.
Roofs leaks sometimes move through the layers of the roof and end up far from where the real problem is.
Pooling water can eventually penetrate through the roof s rubber membrane and metal flashing of a skylight resulting in a leak.
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.
Leaks at skylights left unattended can lead to costly structural damage rotted roof sheathing rotted roof framing and wet moldy insulation as well.
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.
In many cases the flashing is the cause of leaks around skylights.
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.
A leak that is at the peak of your roof may trickle down and soak the drywall next to your skylight.
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.
Skylight leaks in heavy rain are a common source for roof leaks.
Then press down on the roofing shingles to seal them tight.
Especially as your home ages a bit.
1 lift up the shingles next to the skylight one at a time and brush out any dirt and debris.
No matter how well your skylights were installed it is still possible for them to leak during heavy rains.
Changing the flashing is a lot cheaper than purchasing a brand new skylight.
Although sometimes the source of the skylight leak is not the skylight itself.
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.
The best solution in this case is to slope or build the roof up so water will not pool.
During installation each skylight essentially creates a big hole in an otherwise uniform roof surface.
Whether you ve got a flat roof a pitched roof or a contemporary style roof wear and tear will still happen.
However proper repairs will require removing shingles near the skylight installing appropriate flashing and reinstalling new shingles in the area.
