Motorhome Magazine Open Roads Forum: Did I just do a stupid thing with my fan install?
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 > Did I just do a stupid thing with my fan install?

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Naio

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Posted: 09/13/17 04:05pm Link  |  Quote  |  Print  |  Notify Moderator

I don't know what's wrong with me, but somehow in rereading the fan install thread,-- after a month away working on a rental property -- I missed the butyl tape part.

Could not get an AC gasket for reasonable price, so made one out of an old truck inner tube, layered that with dicor so it goes fiberglass, dicor, rubber, dicor, fan flange.

Is this ok or am I an idiot?

I did check that my dicor was ok with rubber and fg.


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wa8yxm

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Posted: 09/13/17 04:17pm Link  |  Quote  |  Print  |  Notify Moderator

Two answers.
1: If it leaks in the first rain you experience... YES you are an idiot.

However

2: IF it works.. NO you are an engineer and that is what I think you are.


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time2roll

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Posted: 09/13/17 04:19pm Link  |  Quote  |  Print  |  Notify Moderator

As long as the dicor is good you have no worries.


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ScottG

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Posted: 09/13/17 04:20pm Link  |  Quote  |  Print  |  Notify Moderator

Not at all. The Dicor will do the job just fine - there's no reason to use anything else. You didn't even need to make the gasket.
I installed two FF on our last TT with just dicor (didn't use the flimsy bubble wrap "gasket" they provided) and it was still water tight 13 years later.
On our new trailer they were installed by the factory the same way, just Dicor.

I would cover the edge of the inner-tube material with Dicor because it will brake down with UV if you dont protect it.


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mike-s

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Posted: 09/13/17 04:36pm Link  |  Quote  |  Print  |  Notify Moderator

The reason to use butyl tape is because Dicor will end up gluing things down, which makes it very difficult to remove them in the future. Dicor is a LAP sealant, i.e. it's made to cover the top of a joint.

Lwiddis

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Posted: 09/13/17 05:27pm Link  |  Quote  |  Print  |  Notify Moderator

Inner tubes can last for years on a tire. Protected from sun...I think it will work.


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BFL13

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Posted: 09/13/17 06:16pm Link  |  Quote  |  Print  |  Notify Moderator

You forgot to add Eternabond on top of all that! [emoticon]


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Naio

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Posted: 09/13/17 06:32pm Link  |  Quote  |  Print  |  Notify Moderator

Oh, thanks, youse guys [emoticon].

I did dicor the edge.

And then, next job, I removed a leaking window, saw what the butyl is like. Yeah, that looks like good stuff and removeable!

I sure hope I never need to remove that fan...

dougrainer

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Posted: 09/13/17 08:42pm Link  |  Quote  |  Print  |  Notify Moderator

$16 for a roof AC gasket is price gouging????????????????????? For $16 you rigged something up? WHO uses a AC gasket for a Fan install???? NOBODY in their right mind. Doug

mike-s

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Posted: 09/13/17 09:30pm Link  |  Quote  |  Print  |  Notify Moderator

dougrainer wrote:

$16 for a roof AC gasket is price gouging????????????????????? For $16 you rigged something up? WHO uses a AC gasket for a Fan install???? NOBODY in their right mind. Doug
That's harsh. He was doing what he thought was right. And it was right for the primary need - there shouldn't be any leaking issues. Just a lot of work (or more probably, a larger area which needs sealing) the next time the fan has to come out, which hopefully is in a long, long while.

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