I am a homeowner in central NJ. I have a Velux VS-1 skylight in a bedroom cathedral ceiling that was installed in the late 1980’s that has had a slow leak in the head flashing area (a few drops during heavy
rain) on and off for most of its life. I have had a piece of plywood on top of the skylight for awhile and that seemed to stop the leak, but now even with the plywood, the leak has become worse. I would like to replace it with a Velux fixed FS-304 because the rough opening is very close to that of the VS-1.
The roofing material is the standard 3 tab shingles and the pitch is 3/12. If I can use the FS-304 skylight with the standard EDL flashing I may tackle this job myself, however, if it requires special flashing, I’m in over my head. The existing skylight was installed by a general contractor when he built the 13 x 12 bedroom addition, and it appears to have been done correctly with sill, head and step flashing, but I’m not so sure that a special curb or flashing was required. The last thing I want is for the new skylight to leak.
Some pictures follow.
Any advise is appreciated.