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Old 06-21-2016, 11:32 AM   #1
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underbelly material for the underside of TT

Hi,
Have been fixing major water damage repair to my TT. everything is ready to put back together. I can not for the life of me, find any discussion on how to repair the underbelly material and even where to buy it.
The stuff that was on there, rotted away, so its not a clean cut. I am wondering how I will be able to repair it since that cloth was put underneath the joists, flooring and metal frame of the TT.
I have searched and searched You tube and online to see if I can find videos of anyone fixing it, but they only show how to repair the floor.
Anyone have any advice on how to get the underbelly material back up?? thanks
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Old 06-21-2016, 02:33 PM   #2
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Are you referring to the corrugated plastic used to "seal" the underbelly or the black woven material that waterproofs the wood ?
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Old 06-21-2016, 02:43 PM   #3
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underbelly material for the underside of TT

Surface Shields (BP4180) 4" x 180' Scrim Shield Repair Tape https://www.amazon.com/dp/B002SSGAZG..._fGzAxbRE71VE6

This is the waterproofing material that is applied to the underside to protect it from the elements. It is ultra sticky so it takes some planning to apply it. You can get it in sheets, wide rolls, etc.

I have used corrugated plastic sign material used for signs to make repairs. The tape above works perfect to attach to the existing underbelly material.
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Old 06-26-2016, 12:29 AM   #4
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After repairing some holding tank issues I discarded the old fiberglass insulation and black fabric material used to close the underbelly. In place of these materials I used several layers of rigid foam insulation board (the pink/blue stuff at the box stores) and colorplast as the closing layer. The coroplast is like plastic cardboard, very easy to work and light. I found it in 4 x 8 ft sheets at a sign shop. I installed it in sections allowing access to parts of the underbelly area without having to reopen the entire space. To secure it I used 3/4" x 1/8" aluminum straps around the edges and some 22 ga. x 2" steel straps as cross straps to help secure the coroplast and add some more support for the two holding tanks.
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