Sealant or clamp for securing an exhaust vent pipe?
Securing the gap where the blower motor connects to the exhaust pipe requires choosing between a clamp and silicone sealant. If a clamp isn't strong enough on its own, the vent risks coming apart in the attic. However, applying sealant complicates routine maintenance, as the old silicone must be scraped away just to clean the exhaust pipe.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1using short screws at joint sections without piercing inner linerDid this help you?
- 2Using just a hose clamp without over-tightening itDid this help you?
- 3Testing for leaks with a soap and water solutionDid this help you?
- 4Using high temperature red silicone sealant as a last resortDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I do not want this vent coming apart in the attic....thanks in advance.”source ↗
“Should I use a sealant around the gap where the blower motor connects to the exhaust pipe or will a clamp be enough?”source ↗
“The previous owner had some sort of silicone sealant around the gap that I had cleaned up while cleaning the exhaust pipe”source ↗