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Old 09-29-2015, 10:23 PM   #1
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Enclosing the underbelly

Bought my 2015 Primetime Avenger 27bbs ATi, it does not have the heated or enclosed underbelly. I noticed that the water lines are exposed along with the all three tanks underneath. Here's my idea:
Gonna use Severe weather rated pressure treated plywood from lowes. Starting front to back I am going to attach the wood to the outer framing with stainless steel self tapping screws so it can be removed if needed. As I hang each piece I am going to place insulation on the top side of the wood to insulate the tanks, etc. I will continue this until I reach the rear ensuring a solid "seal" for the entire under carriage. I understand I will have to notch for drainage and things like that. I figured at about 50lbs per sheet x 7 sheets it will add about 350 lbs total.Does this sound like a decent idea? Any concerns?
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Old 09-29-2015, 11:01 PM   #2
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Why not use corrugated plastic underbelly material?
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Old 09-29-2015, 11:38 PM   #3
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Where can I get large enough sheets?
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Old 09-29-2015, 11:43 PM   #4
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I think I would use foil faced foam before plywood. Lighter weight, water proof, and insulates all at the same time.
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Old 09-29-2015, 11:49 PM   #5
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Plastic cardboard sheets on line at Home Depot. 4 x8 sheets


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Old 09-30-2015, 08:47 AM   #6
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My only concern with plastic sheeting is securement with the amount of wind under there in tow.
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Old 09-30-2015, 09:03 AM   #7
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Look under other RVs. Most of them have a corrugated plastic all one piece under them held in with self tapping screws with washers.
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Old 09-30-2015, 09:09 AM   #8
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If you wanted to use the corrugated plastic, and since it wont be one piece, my only suggestion would be to go the opposite direction. You said you wanted to start in the front and work back. I would start at the back, and work toward the front. Then you could overlap the sheet about 6-8 inches (or even more, to your comfort level), and it would look similar to roof shingles, then the air (while driving) wouldn't be able to get into the seems.
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Old 09-30-2015, 10:01 AM   #9
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Wood would add weight and moisture would eventually get to it. I would do it just like all the others, insulate the tanks with foam and add the corrugated plastic. Wrap the hoses in heat tape/insulate wrap.
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