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rlw999's avatar
rlw999
Explorer
Mar 03, 2021

Dicor lap sealant or Eternabond tape for new roof vent

I'm replacing a roof vent with one with a fan. I have both Dicor self leveling lap sealant and some 4" Eternabond tape. The roof is TPO. The current vent is sealed with lap sealant, but I'm not sur...
Seeking Advice
JIMNLIN's avatar
JIMNLIN
Explorer III
Mar 07, 2021
Be careful about building up height (over old sealant) of lap sealant around roof fixtures/jacks/etc. This can cause water to pool (lake effect) and a future source of water intrusion. BTDT ...I was a member of "more is better" crowd and it was a expensive lesson.

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