Plumbing vent stack leak (snow)
I have a plumbing vent stack that has a plastic/rubber ready-made
flashing/boot. It seems to be installed correctly (the flashing is above the shingles on the downward slope and below the shingles on the upward slope). However, I get a leak only when snow melts. Rain is no problem. I suspect snow/ice is damming at the vent and accumulating upward and below the shingles. Is there a way to prevent this? Can I use a shingle adhesive to seal the shingle to the flashing and prevent water penetration below the shingle? |
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