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Old 08-26-2016, 02:30 PM   #1
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Insulation

Going to remove and replace belly pan. What type of insulation do I replace the existing with?
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Old 08-26-2016, 02:55 PM   #2
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when we did ours we went back with 2" foam board insulation.
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Old 08-26-2016, 03:22 PM   #3
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Really whatever you want. I used rockwool since it repels water and is easy to work with. 1/3 sheet laid on top of a full sheet was the right thickness.

Why are you removing and replacing your belly pan?
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Old 08-26-2016, 04:34 PM   #4
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Foam board insulation. You can get a couple inches under there easily. Doesn't hold water. Foam board adhesive backed up by some screws 1/2" longer than the board thickness. Cut some scrap aluminum into little squares to act as washers for the screws.
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Old 08-26-2016, 06:05 PM   #5
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If you use foam board, you can use canned foam to seal and glue it
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Old 08-26-2016, 06:16 PM   #6
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Good advice why put more stuff in there that will soak up water and make a great nest for critters?
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Old 08-27-2016, 07:03 AM   #7
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We are removing the belly pan because the aluminum is deteriorating where it attaches to the metal underside.
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Old 08-27-2016, 08:44 AM   #8
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I see. Be prepared to open Pandora's box. Deteriorating aluminum often hides deteriorating frame members.
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Old 08-27-2016, 09:00 AM   #9
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I used no insulation on the underside of mine. There is nothing under there that can trap moisture and I am putting a hinged, aluminum louvered vent centered between each crossmember. Just to keep a bit of airflow in the belly.
Plus be able to open it up and use a snake cam to inspect.
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Old 08-27-2016, 09:30 AM   #10
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Quote:
Originally Posted by TheGreatleys View Post
I see. Be prepared to open Pandora's box. Deteriorating aluminum often hides deteriorating frame members.
In other words "Ignorance Is Bliss".
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Old 08-27-2016, 10:22 AM   #11
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We did not insulate under the floor either. Instead, we added a floating cork floor to the trailer. Floor is much warmer now, and nothing under the trailer to soak up water or attract critters.

Kay
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Old 08-27-2016, 11:50 AM   #12
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Those that chose no insulation:
Do you camp in cold weather?
Did you protect your tanks from freezing?
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Old 08-28-2016, 07:31 AM   #13
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My tanks are inside the trailer on the floor.
I don't plan on camping in any weather below 40 degrees.
I've been shopping for flooring recently and wonder if my furnishings, gaucho, closets etc would shift during travel if they are only attached to the walls?
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Old 08-28-2016, 08:16 AM   #14
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I don't think that the insulation that was put there by the factory was doing much to begin with, partly because of the way that it was installed (compressed in many areas), and mostly because of what becomes of it after a short amount of time. (chewed, soaked, sagged, etc).

I used my camper for several years after I first bought it, then decided that the rear floor needed some help. I decided to patch instead of replace, and in that process, I removed a bunch from the back half of the trailer. Never noticed any difference inside, during cool-weather camping.

eventually, I had to completely replace the rear floor, and that has turned into a full monty, added grey tanks, bigger black tank below the floor.
There are 9 2-foot frame bays in this camper, and 5 of them are full of "tank". no room for any insulation. Even if I were to attempt something in the other half that aren't stuffed full of tank, I don't think it is going to make any measurable difference.

waste water isn't going to freeze solid the moment the outside air temp hits 32; it would have to get below that and stay below that for a long time. Around here, the "last hurrah" of the season is typically Columbus day. It might dip below freezing overnight for a short time up north, but thats about it. I really don't think its necessary, unless you are a hard-core winter camper, or a full-timer in the north. Just not practical when the walls (through which probably 90+% of the heat escapes) are only 1 1/2" thick.
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