Floor insulation - Fiberglass RV


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Old 06-24-2013, 09:33 PM   #1
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Floor insulation

Has anyone tried to insulate the floor of an egg? Is there a blow on foam product that goes on liquid and then hardens? Kind of like the stuff in a can that you spray in cracks?
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Old 06-24-2013, 09:58 PM   #2
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I am trying to figure out why you ask this? Are you trying to fill in cracks or insulate the floor?
I camp in winter so I wanted my floor insulated. I pulled the existing floor cover off.
Then I used two layers of a fiberous matt that I found at a RV service center. Cut it to fit in the center floor well of the Uhaul. No glue was needed.
I made a floor patern and cut to fit commercial grade carpet then layed it. Screwed the door trim over it at the entrance. It works good and my floor is warm and looks nice.
However I also think a closed cell foam would work just as well for insulation. I know you have seen the foam I speak of...it's the stuff that those jigsaw type floor squares are made of. They are made in gray for work areas or in primary colors for children's play areas.
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Old 06-24-2013, 10:03 PM   #3
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It seems floor insulation is a weak link in these glass eggs. Wood conducts cold very well. I am now looking at scamps which have an "R15" (?) rating but... not the floor me thinks. Yes, you can insulate the main area but it will be a pain to get under cupboards, closets, showers and so forth.

I am single and am looking to full time in mine. Winter, even in NC, is going to be a challenge. And I don't like cold...

I am also looking at doing a pergo kind of floor. I like the looks of that, it adds an open feeling.
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Old 06-24-2013, 10:06 PM   #4
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John, I think the problem would be with the cracks that would be between the foam and the floor. And you would have some of those because it doesn't go on like paint. Moisture shouldn't just stay there until it evaporates... and have this happen over and over.

I think insulating the interior would be a better solution. Maybe a heavier throw rug used during the colder times?

You are asking about putting the foam on the bottom outside of the floor?
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Old 06-24-2013, 10:27 PM   #5
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Yep. I am sure you have seen that can of yellowish foam which you spray into cracks around windows and doors etc. It expands and then hardens. Imagine that sprayed on the underside of the rig, 2 or more inches thick, hardened. Maybe painted if you want. It would provide a reasonable R value and be pretty durable I think.

I was just wondering if anyone had ever seen something like that done.

I know LivinLite uses a spray on (very thin) microbead paint kind of thing. It just seems some kind of spray on foam is a natural.
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Old 06-24-2013, 11:49 PM   #6
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Yes, I have heard that there are do-it-yourself spray-on foam products, but they're nowhere near as simple, as convenient, or as available as the crack-filling stuff (which is entirely unsuitable for this purpose). I hope someone has found a viable product and will report on it.
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Old 06-24-2013, 11:52 PM   #7
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Forgot to add...
There are certainly commercial products of this type. Many RVs are insulated this way, at the factory or - probably more commonly - by someone contracted by the RV owner.
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Old 06-25-2013, 05:29 AM   #8
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Escape Trailers has a foam package option that encloses the tanks and floor and keeps them warm in the winter. Works really well. Here is a picture on mine, now Escape paints it all black.
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Old 06-25-2013, 06:12 AM   #9
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Looks like the newer spray on home insulation. Don't know durable it would be for under a trailer though.
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Old 06-25-2013, 06:49 AM   #10
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Still looks new after one year on the road...
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Old 06-25-2013, 07:38 AM   #11
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As anyone use the sound and heat shield they use on cars in the engine bay? I had to spray that stuff on the cab engine bay for sound and keep the engine heat out. Just a thought...
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Old 06-25-2013, 08:35 AM   #12
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Keep in mind that many of your fiberglass eggs have limited headroom inside the trailer. If you add anything to the interior floor, i.e. insulation or flooring, you will be decreasing the available headroom. This may not be an issue for those of you who are vertically challenged, however, if you are relatively tall, it could definitely be a deal breaker. I personnally would go with a spray on insulation that goes on the underside of the trailer (and in fact I have). Maintains a warm floor and gives you max headroom.
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Old 06-26-2013, 06:37 AM   #13
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The big difference is the bottom of the Escape trailer is totally encased in fiberglass. It's a tubbed trailer. Scamp has an exposed wood floor. Us Scamp owners have to be careful we're not adding something to the bottom of the floor that would trap moisture.. I know the foam won't but it's the divots and cracks in the foam... next to the floor that may.
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Old 06-26-2013, 06:42 AM   #14
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I can not understand how a foam covered floor would not benefit from element protection vs bare wood, cracks or not.
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