JCH
Member
Just up-sized my plumbing venting so that it now has a 3" vent going through the roof.
I had a roofer install a lead flashing (with lead counter-flashing cap) for me. He nailed it along the top edge (under the shingles), but did not use any sealant/roofing cement/anything. He said the weight of the lead would keep it in place and it would be able to move slightly to accommodate thermal expansion of the horizontal ABS piping below (the 3" ABS 90's just below the roof).
From the inside of the attic, I could see sunlight around the cutout, so I went up on the roof and pressed the lead flashing down flat against the roof. The jostling of the pipes during final hookup must have bent the flashing.
Before I seal up the ceiling below, should I be making another trip up onto the roof to apply some sealant?? If so, what and where?
Roof is 8/12, fiberglass shingles, over skip-lath and OSB.
Thanks!
I had a roofer install a lead flashing (with lead counter-flashing cap) for me. He nailed it along the top edge (under the shingles), but did not use any sealant/roofing cement/anything. He said the weight of the lead would keep it in place and it would be able to move slightly to accommodate thermal expansion of the horizontal ABS piping below (the 3" ABS 90's just below the roof).
From the inside of the attic, I could see sunlight around the cutout, so I went up on the roof and pressed the lead flashing down flat against the roof. The jostling of the pipes during final hookup must have bent the flashing.
Before I seal up the ceiling below, should I be making another trip up onto the roof to apply some sealant?? If so, what and where?
Roof is 8/12, fiberglass shingles, over skip-lath and OSB.
Thanks!
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