Roof vent leaking but NO HOLES ! - Fiberglass RV


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Old 05-18-2014, 11:09 AM   #1
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Roof vent leaking but NO HOLES !

Last year our Trillium's roof vent was leaking quite heavily. It was in October and after the massive clean up and floor replacement we just didn't have the time or energy to remove the roof
vent to find the problem.
So in a pinch I sprayed a bunch of that STOP LEAK around the vent seal.
Even before spraying the roof vent the roof seal (done by Calgary Trillium dealer) looked fine.
But then after spraying the STOP LEAK ( on the completely dry area) it looked like there was no way it would leak.
Waited a few dry days and tested it. Still leaking just as bad !!!
Does anyone rake out there know what could be causing this leak ?
The vent is not cracked either .
This is one of those FANTASTIC FANS
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Old 05-18-2014, 11:33 AM   #2
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What kind of sealant was used between the roof and the vent?

If it is a silicone product out of a tube your actual leak may be a long distance from where it is coming in.

If it's not sealed with RV putty-tape I would suggest taking off the vent and resealing it again and look for any small cracks around the opening while you are at it.
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Old 05-18-2014, 11:39 AM   #3
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Thanks for your reply.
I am not sure what was used as it would be whatever the shop uses at Trillium Outback in Calgary Alberta.
I thought maybe it is getting through the roof vent somehow. Not the seal but the actual vent
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Old 05-18-2014, 12:07 PM   #4
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Quote:
Originally Posted by Trillium-Pettis View Post
Thanks for your reply.
I am not sure what was used as it would be whatever the shop uses at Trillium Outback in Calgary Alberta.
I thought maybe it is getting through the roof vent somehow. Not the seal but the actual vent
I'm not personally familiar with the Fantastic Fan, but it's my understanding that they will themselves leak if there's a malfunction of the rain sensor that's supposed to close the vents when it's raining.

This assumes that yours is a model that HAS a rain sensor- there may be earlier models that don't have that feature.
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