We typically find that leaks from skylights on flat roofs develop because of the degradation of the rubber gasket in between the window and window frame or the flashing around the curb that connects the skylight to the roof system.
Skylight roof leak repair.
Use roofing cement can or tube to seal any gaps or holes in the flashing.
Skylight flashing for a flat roof.
Replace or repair the metal flashing around the frame of the skylight.
1 lift up the shingles next to the skylight one at a time and brush out any dirt and debris.
Skylights are an ongoing problem for roofs.
Apply 100 silicone caulking tube to seal leaks around the skylight lens.
To fix a leaking skylight.
Use roofing cement can or tube to seal any gaps or holes in the flashing.
Try making the easier repairs with roofing cement or silicone caulking first before tackling more difficult fixes like replacing the flashing.
What we do is use modified bitumen adhesives to apply the rubber membrane to the flashing.
If your skylight is still leaking replace repair the metal flashing around the frame of the skylight.
The best way to attach the rubber roof to the skylight is with modified bitumen adhesive.
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.
Apply 100 silicone caulking tube to seal leaks around the skylight lens.
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 but a proper repair will require removing shingles near the skylight installing proper head side and foot flashing around the unit as you reinstall new shingles in the area.