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Old 02-21-2021, 12:07 PM   #1
Woodsman11
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Dump Valve Inspection

Just bought our RV in Nov of last year. Put it into storage through the winter. I was inspecting it the other day and noticed the workmanship and issue underneath the RV near the dump valves. Is this normal with all of the gap filler jst squeezed around? It looks like some 7-year-olds had a good time and just started squeezing gap filler everywhere. Also, it seems that there is a tear. Can I just use flex tape to seal it?
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Old 02-21-2021, 12:24 PM   #2
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Quote:
Originally Posted by Woodsman11 View Post
Just bought our RV in Nov of last year. Put it into storage through the winter. I was inspecting it the other day and noticed the workmanship and issue underneath the RV near the dump valves. Is this normal with all of the gap filler jst squeezed around? It looks like some 7-year-olds had a good time and just started squeezing gap filler everywhere. Also, it seems that there is a tear. Can I just use flex tape to seal it?
I suspect they’re in a hurry and pull the can out with the nozzle pressed and took a rag then wiped it off. The right way is to let it dry come back with a long knife and cut it smooth.
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Old 02-21-2021, 12:29 PM   #3
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New RV and delivered like this? Poor service department and not much of a Pre PDI was done by them prior to selling...

Id fix it myself and Id cut away the existing spray foam crap and repair the bottom with scrim tape and then with the bottom installed properly and no downward sag Id reseal myself...

Or.. take it to the dealership and see how long they keep the RV for an hour repair job and minimal costs
YMMV
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Old 02-21-2021, 12:36 PM   #4
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Welcome to the forum

When the factory builds these rolling "wonders" I believe it is upside down when all the foam is sprayed. I've seen much better jobs and as hard as it is to believe I've seen worse.

As stated, fix it yourself, You may have to spray paint the foam after it cures, but it will look a lot better.
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Old 02-21-2021, 12:37 PM   #5
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Quote:
Originally Posted by Woodsman11 View Post
Just bought our RV in Nov of last year. Put it into storage through the winter. I was inspecting it the other day and noticed the workmanship and issue underneath the RV near the dump valves. Is this normal with all of the gap filler jst squeezed around? It looks like some 7-year-olds had a good time and just started squeezing gap filler everywhere. Also, it seems that there is a tear. Can I just use flex tape to seal it?
I'm curious about the orange vented plug in the 1st photo? Been around RVs for over 45 years & never seen this before, what's the purpose?
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Old 02-21-2021, 02:20 PM   #6
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I'm curious about the orange vented plug in the 1st photo? Been around RVs for over 45 years & never seen this before, what's the purpose?
Here you go Danny. We both learned something today !!!



That "said and discovered" I'll just leave my drain open in storage with a 5 gallon bucket under it "just in case". So far, winters up here, there are no flies, no bees and mice apparently don't prefer the black tank odors, so no mice either.
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Old 02-21-2021, 06:56 PM   #7
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Thanks for all of the tips. I will cut away as much as I can and clean it up. Additionally, I was going to use Flex Tape. However, it was mentioned to use scrim tape. Which is better in the long run?
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Old 02-21-2021, 07:53 PM   #8
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I've used both but I think scrim is better - carry both of them with me though.
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Old 02-21-2021, 08:50 PM   #9
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Based on the "open holes" that you've got around the PVC pipe where it comes out of the underbelly, you might consider an overlay rather than trying to cut away what's there.

Trim up all of the "hanging and bulging" foam overspray, get a 2' x 2' piece of coroplast, cut and trim it to fit snugly around the protrusions through the underbelly, lay it over the existing "mess" and then secure it in place with SCRIM tape. That way you don't risk cutting something that might be hidden, you won't be eliminating the protection the existing "big coroplast sheeting" provides and you'll be keeping as much of the OEM sheeting as possible. At the same time, you'll be "hiding the mess, improving the seal around protrusions and avoiding trying to "bridge big gaps" with foam or tape.
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Old 02-22-2021, 04:12 AM   #10
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Sounds great. I will definitely fix this isse.
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Old 02-26-2021, 07:19 AM   #11
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Quote:
Originally Posted by Woodsman11 View Post
Just bought our RV in Nov of last year. Put it into storage through the winter. I was inspecting it the other day and noticed the workmanship and issue underneath the RV near the dump valves. Is this normal with all of the gap filler jst squeezed around? It looks like some 7-year-olds had a good time and just started squeezing gap filler everywhere. Also, it seems that there is a tear. Can I just use flex tape to seal it?
what is with teh orange perf cover??

are valves open???
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Old 03-04-2021, 09:53 AM   #12
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I like to use a wood backing that spans both sides of the tear, then screw the two edges together to close the gap. Then use whatever method that floats your boat to finish sealing the repair.
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Old 03-04-2021, 03:19 PM   #13
Ken / Claudia
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After inspecting the underside I seen that spray foam. Thought about cutting it off to be level with the bottom. I thought about that for a minute and changed my mind and left it alone.
WHY? my reason is the cover likely flex's from roads and winds. That big pile of gore/foam will hold the bottom in place better than if you cut it off flat with cover.
Is that true, not sure. But easier to leave it alone.
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Old 03-14-2021, 03:11 PM   #14
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My 2019 Keystone Cougar 27RESWE has the same shoddy looking foam insulation. Likely typical on most RV’s, unless it’s an Airstream or a coach. That’s the quality you get with most RV trailers. (Or lack of)
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