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Old 03-02-2005, 01:17 AM   #1
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Join Date: Mar 2005
Posts: 1
installing a roof vent fan

we have a thomas 71 passenger school bus and we are attempting to
install a 14 inch, Fantastic rv roof vent fan. the roof is slightly
curved, when placed in the center is has a 3/8 inch gap on the sides
does anyone have any ideas how is the best way to install this so it
is water tight. thanks
sqitribe is offline   Reply With Quote
Old 03-02-2005, 08:15 AM   #2
Join Date: Dec 2003
Posts: 245
I installed 2 vents on our Bus and dealt with the curve issue by adding extra strips of that waterproof putty tape (made for installing vents & such on RV’s ) on the ‘high’ sides of the vent .
Basically, I built up the waterproof tape until I had a reasonably level base to work with…
Then I metal screwed the vent down just enough to get a tight bond …but not so much as to bend the vent body.

Hasn’t leaked a drop ….in the rainiest place you’ll ever see in the US.
Seems to work great.

Are you questioning my Aaa-thoritttyy ?
soused moose is offline   Reply With Quote

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