Trillium - MaxxFan Install - Page 2 - Fiberglass RV


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Old 06-09-2016, 08:47 AM   #21
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Name: Clayton
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Hey Patrick, I have actually noticed a bit of a sag in my roof after the install of the MaxxFan. Let me know how your supports work out.
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Old 06-24-2019, 12:47 PM   #22
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Hi, This is an old thread but I am wondering about sourcing the fibreglass tubing in Canada?

Cheers,

Murray
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Old 06-24-2019, 02:04 PM   #23
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Originally Posted by Kommander View Post
Hi, This is an old thread but I am wondering about sourcing the fibreglass tubing in Canada?

Cheers,

Murray
here is a link to a source. You don't have to use this source just use their keywords from the product description plus the name of the country to find other places to purchase it. By the way you had a spelling error when you posted spelling it as fibREglass instead of the correct way fibERglass. That can sometimes mess up getting good search criteria returns.
Fiberglass Tube - Fiberman
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Old 06-24-2019, 07:35 PM   #24
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Hi there - the fan install has worked great. I framed it with pvc strapping from Home Depot. I didn't use any fiberglass tubing. What looks like tubing is actually aluminum angle (3/4") also from HD. Then I fiberglassed everything to the roof. Hope that helps.Click image for larger version

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Old 10-02-2019, 08:12 PM   #25
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Maxxair Install

Am partway through my install.

Just finished using jacks to create a gentle curve in the roof before epoxying strips of 1/4Ē marine plywood to the roof. The roof had a bit of sag and when I laid the fan on it to see what would happen it sagged a bit more so I decided to reinforce the roof.

I followed the fiberman link above but minimum order is $500 so Iíll just use wood to frame it.

The whole frame and entire roof will be fiberglassed to make sure I donít get a reoccurrence of leaking that I got from some pitting of unknown origin in the upper surface. The gelcoat is also worn through in a few places from being tarped for the winter.
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Old 12-15-2019, 03:15 AM   #26
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Am partway through my install.

Just finished using jacks to create a gentle curve in the roof before epoxying strips of 1/4Ē marine plywood to the roof. The roof had a bit of sag and when I laid the fan on it to see what would happen it sagged a bit more so I decided to reinforce the roof.

I followed the fiberman link above but minimum order is $500 so Iíll just use wood to frame it.

The whole frame and entire roof will be fiberglassed to make sure I donít get a reoccurrence of leaking that I got from some pitting of unknown origin in the upper surface. The gelcoat is also worn through in a few places from being tarped for the winter.

This looks great! Please post as you finish it!
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Old 12-15-2019, 08:14 AM   #27
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Maxxair/Roof progress

Bruce - thanks for the reminder. I am done and all that remains is to put the butyl tape on the edges of the fan and screw it into place. After finishing reinforcing with the marine ply I shaped and filled and faired Until everything was smooth enough to fiberglass. after sanding the whole roof with 80 grit I laid 2.3 Oz fiberglass down both sides and poured the epoxy to it using a flexible spreader to get the cloth saturated and attached to the roof with no dry spots or places where there was too much epoxy. Another coat of epoxy after the first hadnít finished curing but was not sticky or tacky to fill the weave.

Next, I built the frame to mount the fan. Cut out the hole in the roof through the marine ply and test fit everything before using thickened epoxy to glue the frame to the roof. Followed that with fillets of thickened epoxy to give a nice curve between the roof and sides of the frame before applying fiberglass tape and epoxy. This was followed by more filling, scraping and sanding until it was ready to paint.

Then after sanding with 120 grit, three coats of System Three Yacht Primer all applied before each coat had cured...to avoid sanding between coats. Once the primer had cured, I sanded it and put on 7 coats of System Three WR-LPU two part polyurethane, 5 of white and two of clear glossy.

Here are some pics:
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Old 12-15-2019, 08:25 AM   #28
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Wanted to add to above that WR-LPU paint is touchy to apply. Needs humidity to help keep a wet edge. I had a humidifier running in the garage while painting and had to work very quickly. Not easy when you have to go from one side to the other as the roof is too wide to paint just from one side.

I used roll and tip method, starting at one end and working to the other, switching sides about every two feet.

Having two people would have been a lot better. A LOT better.

This paint dries to a hard surface and the clear gloss is really glossy! It could use some polishing/sanding to get rid of dust bits but I’m not going to bother...nobody is going to see up there!
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Old 12-20-2019, 04:28 AM   #29
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Thanks for posting, that looks really good. Nice look to the fan install and the roof looks so much stronger!
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