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  • 1 Post By Brent Swain
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Old 11-23-2012
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Is condensation a problem if I insulate/line the hull interior?

So I ripped out the mildew stained carpet that lined the hull in my v-berth and I need to replace it. For about the same cost as replacing the carpet, I can buy a couple western red cedar 4x4's, run them through the table saw and have a nice liner for my hull.

If I leave the space between the strips and the hull open, or if I pack some sheet foam in there first, am I asking for condensation and mildew?
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Old 11-24-2012
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Is condensation a problem if I insulate/line the hull interior?

Hi Peter! I asked the same question a few weeks ago and have had some excellent responses to it. I recently also ripped out the nasty carpet in by cabin and v-birth. I cleaned the fiberglass, applied several coats of mildew resistant primer, a layer of reflectix, and finished with wood. I have actually documented the whole process in my photo gallery. The thread is called winter moisture control under the liveaboard forum. And my gallery can be found under my signature. PM me if you have any specific questions. Good luck!
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Old 11-24-2012
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Re: Is condensation a problem if I insulate/line the hull interior?

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Originally Posted by TheTardis View Post
I cleaned the fiberglass, applied several coats of mildew resistant primer, a layer of reflectix, and finished with wood.
How did you attach everything especially the wooden top layer?
thanks
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Old 11-24-2012
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Re: Is condensation a problem if I insulate/line the hull interior?

Glass in a few stringers to screw the new wood to that leaves an air gap between the hull and the wood
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Old 11-26-2012
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Re: Is condensation a problem if I insulate/line the hull interior?

I guess that air gap layer, ESP if its full of insulation, worries me that it might trap condensation and become a mildew trap...
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Old 11-26-2012
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Re: Is condensation a problem if I insulate/line the hull interior?

If you use Armaflex sheets for insulation you shouldn't have mold. Armaflex os mold resistant, and non absorbant. If there is no way for moist interior air to contact cold bare hull you should not get condensation.
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Old 11-26-2012
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+1. I used volara because a supplier of mine carries it, but arma flex is even better I suspect.

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Old 05-13-2013
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Re: Is condensation a problem if I insulate/line the hull interior?

Reviving an old thread here but I'm having trouble sourcing Armaflex in the US. Do you know wher I can buy it?

Thanks

Graham

Quote:
Originally Posted by SchockT View Post
If you use Armaflex sheets for insulation you shouldn't have mold. Armaflex os mold resistant, and non absorbant. If there is no way for moist interior air to contact cold bare hull you should not get condensation.
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Old 05-13-2013
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Re: Is condensation a problem if I insulate/line the hull interior?

Try you local HVAC suppliers. Armaflex is commonly used in that industry.
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Old 05-13-2013
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Re: Is condensation a problem if I insulate/line the hull interior?

Quote:
Originally Posted by peterchech View Post
So I ripped out the mildew stained carpet that lined the hull in my v-berth and I need to replace it. For about the same cost as replacing the carpet, I can buy a couple western red cedar 4x4's, run them through the table saw and have a nice liner for my hull.

If I leave the space between the strips and the hull open, or if I pack some sheet foam in there first, am I asking for condensation and mildew?
Yes condensation will flow down that space like a river. Closed cell foam in full contact with the hull is the only way you will eliminate condensation there.
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