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Old 10-07-2019, 05:39 PM   #1
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Plugging hole in coroplast at spring shackles

What is the black foam stuff ORV uses to fill the voids in the coroplast where it meets the spring shackles? What would be a good substitute?


The situation: during winterization I saw light through a penetration in the compartment by the water heater. I stuck a wire down and it came out by the spring shackle. I looked at all the spring shackles and found five more openings, some with wires visible up in the 'basement'.



I'm concerned about road spray getting in, and now, rodents. I figure I could use duct seal (a kind of putty electricians use) or the foam for sealing doors and windows, but I wonder if it will fall out due to road vibration. The stuff ORV uses looks pretty stout.


I've sent a query to ORV and will report their response. In the meantime, any suggestions?
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Old 10-07-2019, 05:49 PM   #2
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I use whatever Home Depot sells for foam. Where the volume to be filled is large, I stuff plastic chicken wire into the space before squirting in the foam. I think the chicken wire will keep the larger critters out and the foam will hold the wire in place and will lessen drafts and smaller critters.

Good luck!
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Old 10-07-2019, 05:55 PM   #3
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https://www.greatstuff.dupont.com/pr...m-sealant.html

Use this or the regular greatstuff and paint it black.
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Old 10-07-2019, 06:07 PM   #4
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Quote:
Originally Posted by Funengineer View Post
https://www.greatstuff.dupont.com/pr...m-sealant.html

Use this or the regular greatstuff and paint it black.

That looks perfect! And it has the added benefit of keeping fish out (or in).

Bob
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Old 10-07-2019, 06:07 PM   #5
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That looks perfect! And it has the added benefit of keeping fish out (or in).



Bob


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Old 10-07-2019, 07:07 PM   #6
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Thanks, all. HD and Lowes don't carry it and won't ship it to AK, nor will Amazon. I'll pick some up when we're in Los Angeles later this month. I see Great Stuff also makes a black version for boats, RVs etc. Thanks again for your input.
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Old 10-07-2019, 10:09 PM   #7
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Plugging hole in coroplast at spring shackles

https://www.jbweld.com/product/plasticweld-epoxy-putty

https://www.homedepot.com/p/J-B-Weld...+putty%7D%3Aqu

https://www.acehardware.com/departme...-epoxy/1060631.

Fill hole, sand, paint if you like. Quick and easy. Had a piece of rebar go through mine on the road.
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Old 10-07-2019, 11:17 PM   #8
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There is a black foam used for landscaping, pools, ponds, rock gardens. Home Despot sells in gardening area, but it's not cheap!! Works good, not a lot of expansion so doesn't make more problems!! Like most spray foams, you might as well use the whole can or most, 'cause it doesn't store well!!!
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Old 10-08-2019, 08:05 AM   #9
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Quote:
Originally Posted by Tuquala View Post
There is a black foam used for landscaping, pools, ponds, rock gardens. Home Despot sells in gardening area, but it's not cheap!! Works good, not a lot of expansion so doesn't make more problems!! Like most spray foams, you might as well use the whole can or most, 'cause it doesn't store well!!!
Ya, about $12 a can here! Works fine.
You could use the standard foam and spray it black with paint.
BTW, rodents eat their way thru foam.
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Old 10-08-2019, 10:04 AM   #10
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Thanks, eg, edible foam--now that's a comforting thought. I saw somewhere that putting brass wool in the hole will slow rodents and won't rust. I might try that with the foam stuff.
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Old 10-08-2019, 04:21 PM   #11
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I have used SOS pads in the past to prevent Rodents. It was seemingly worked (never noticed any).
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Old 10-08-2019, 08:48 PM   #12
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ORV reply

Kevin, at ORV, replied to my phone message two hours after I called.


He says that ORV uses a sealant called Tytan.


https://tytan.com/shop2/tytan-foam/


He thought the Great Stuff would be a good substitute.



I didn't take notes and was in a store parking lot when he called back, so bear with me: He said that above the coroplast (he used a different name for it, I think) is a layer of (I think he said) thinsulite. This stuff acts as a barrier between the pink insulation beneath the floor and the coroplast to prevent water from getting into the insulation. If water gets into the trailer the coroplast isn't water tight and will let it out along the frame where it is nailed on. He didn't say anything one way or the other about the openings I found on my tt by the spring shackles.


Found Great Stuff Pond and Stone at an Anchorage ACE store and shot all six holes full. Cure temperature per the can is 60*+. It's 48* now and dropping with snow predicted. Won't see 60* until next April, but the tt isn't going anywhere in the meantime. Cheers.
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Old 10-09-2019, 11:46 AM   #13
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Thanks for that info!
Tytan foam is also available on Amazon. But only in 12-packs for ~$120 (!)
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Old 10-09-2019, 04:55 PM   #14
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An option that I have been using to plug holes in the corroplast is Vycor or Bituthene made by Grace. Both are waterproofing membranes for building construction with a adhesive backing covered by paper. Bituthene is 40 mil and the Vycor is 25 mil. Really sticky adhesive but material can be cut with scissors. It comes in big rolls but I was able to buy the bituthene by the foot at the local lumber supply. Vycor is a flashing material that comes in various widths, but the roll length might be overkill for a small project.
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