Leaking Skylight; Homeowner wants to attempt repair

Old 10-09-05, 04:53 AM
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Leaking Skylight; Homeowner wants to attempt repair

Skylights in sunporch are about 15 years old. Roof, fairly flat, was redone two years ago. Skylights are leaking inside corners and water is travelling along ceiling. Is there a material I can attempt to use to seal skylights from inside or outside? Roof is easy to get out on. Ladder will reach inside area. Attempting to avoid the expense of replacing the skylights. The flashing should be fairly new. Thank you for any suggestions you can provide!!
Old 10-09-05, 07:44 AM
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the skylights have seals around them that break down in time they need to be replaced
Old 10-09-05, 08:09 AM
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If the sklight is leaking in and around the flashings themselves {new or not}, you could try a highly flexible high quality caulking like polyurethane....or a tube of "modified asphalt" cement. But, there's no reason for this leak other than the workmanship involved during installation. Any sealing done now is likely to open up again down the road, whether it's months or several years.

Some skylight designs can leak themselves. Plastic ones are found to leak when the inner frame cracks, which they do.

Some aluminum ones can leak at the joints when they are not the fully welded version.

Most skylights I've seen will not leak simply because the "seal" between frame sections is "bad".

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