Roof Fan install or not - Fiberglass RV


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Old 09-12-2014, 03:37 PM   #1
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Roof Fan install or not

Ok gang I got an easy one today LOL My 77 Amerigo does not have a roof fan. I wonder if the benefit of one is worth cutting a hole in my roof. My biggest fear is creating a leaking roof. If i do go with a fan its going to be 12volt and be the biggest I can buy. I fugure if install the fan its sure as heck going to move some air LOL With that said I would love some feed back. THANKS IN ADVANCE!!!
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Old 09-12-2014, 03:56 PM   #2
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Originally Posted by hotrodaj31 View Post
Ok gang I got an easy one today LOL My 77 Amerigo does not have a roof fan. I wonder if the benefit of one is worth cutting a hole in my roof. My biggest fear is creating a leaking roof. If i do go with a fan its going to be 12volt and be the biggest I can buy. I fugure if install the fan its sure as heck going to move some air LOL With that said I would love some feed back. THANKS IN ADVANCE!!!
A properly installed fan won't leak. It is one of the best mods you could do.
Follow the instructions and enjoy the results!
Fantastic Fan is a quality product and they make one with features and prices to fit most any budget.
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Old 09-12-2014, 04:07 PM   #3
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We agree with Floyd

We wouldn't want to be without the Fantastic Fan in our Scamp. We use it multiple times most days. We also have AC and have used it 4 or 5 times in 3 years.

Follow Floyd's advice on the install and you will be very happy.

David
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Old 09-12-2014, 04:28 PM   #4
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If you install a FanTastic Fan, be sure to order the roof spacers you need for the thin fiberglass roof. They are free from the factory, just call and ask.

I always install Fantastic units. Right now PPL motorhomes in texas has them on sale starting at $99. They have a huge website.
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Old 09-12-2014, 04:29 PM   #5
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"Properly installed" what ever that means.
You do create another leak point when ever you cut a hole in the roof.

No A/C in my trailer. I carry a Constant Breeze 12 volt box fan. I think out of around 1000 days of camping it's been used maybe 3 times. I had a MaxxAir fan but I didn't want to install it because I didn't want to put another hole in the roof. So I sold it.
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Old 09-12-2014, 05:14 PM   #6
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"Properly installed" what ever that means.
You do create another leak point when ever you cut a hole in the roof.

No A/C in my trailer. I carry a Constant Breeze 12 volt box fan. I think out of around 1000 days of camping it's been used maybe 3 times. I had a MaxxAir fan but I didn't want to install it because I didn't want to put another hole in the roof. So I sold it.
It means "properly installed".
I bought a brand new T-Shirt the other day, and it already had four holes in it... I would consider it defective and useless without every one of them.
Even the pocket had a hole it... which I found handy and useful.
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Old 09-12-2014, 05:17 PM   #7
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I guess one of my concerns is my roof dips or slopes down in the middle. Not a bunch like a inch maybe 2. Is that a valid concern or is that topically in the FG world??
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Old 09-12-2014, 05:23 PM   #8
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Unless your roof slopes away from the fan, you are almost guaranteed to have a leak. does water pool there now?
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Old 09-12-2014, 05:27 PM   #9
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I guess one of my concerns is my roof dips or slopes down in the middle. Not a bunch like a inch maybe 2. Is that a valid concern or is that topically in the FG world??
The Amerigo has a flat roof which can sag over time. If it is sever it may need to be raised and reinforced. Of course it has probably reached a fairly stable condition since it has been around a while. Even though the seal should hold wherever the vent is placed, you might be wise to choose a spot close to the end or off-center, away from the lowest spot.
Of course, cutting the new hole for the vent could present the opportunity to lift and straighten the roof.
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Old 09-12-2014, 05:29 PM   #10
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Everyone swears by roof fans. If I put mine on full, I barely noticed a breeze. I think it's because the Trillium has so many windows that open. As such I seldom use it. When cooking it's useful and if the trailer is very hot. We have a $15 o2cool fan in the window that uses far less power. I use that instead. I recently discovered that the Maxfan that came with my trailer is always on, adding to the parasitic load draining my battery. I don't think I would order a roof fan again or if I did I'd buy one with a real on/off switch. Raz
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Old 09-12-2014, 05:39 PM   #11
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Well you all might think I'm crazy but I just went out and checked to roof it does NOT sag like I thought it did. We had about 3" of rain over the past 30 hours and no water. I thank you all for the feed back but wondering if the fan will help cool the camper enough to warrant a hole. I do not plan to do much cooking inside unless raining. So the near sole purpose is for cooling.
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Old 09-12-2014, 05:40 PM   #12
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The on / off switch can be added after the fact. It doesn't need to be in the fan, a DC breaker on the feed to the fan would work.
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Old 09-12-2014, 05:42 PM   #13
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Originally Posted by hotrodaj31 View Post
Well you all might think I'm crazy but I just went out and checked to roof it does NOT sag like I thought it did. We had about 3" of rain over the past 30 hours and no water. I thank you all for the feed back but wondering if the fan will help cool the camper enough to warrant a hole. I do not plan to do much cooking inside unless raining. So the near sole purpose is for cooling.
When used correctly, they ROCK. The idea is to close all the windows, except for the one next to you. Then when the fan is exhausting, it feels like a breeze is always blowing in the window.
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Old 09-12-2014, 05:45 PM   #14
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Our Maxx fan primarily is used to get hot air out of the trailer and it does an excellent job in no time. We mostly use it to avoid using the air conditioner.
It is only on if we turn it on. If we want to use it as a fan, it can be used that way also.
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