leaking wheel wells

[Popup2012]

What did you use to seal them?

[DavidM]

Search the archives and this forum. There are several threads on this topic. I filled the big gaps in my wheel wells with expanding foam, the smaller ones with caulk. No more water inside.

David

[acgriff]

Used Dicor non-sag at the aluminum joint to the vinyl flooring (if you have it on yours). Then repainted the wheel wells and sealed the edge joints of the flooring and aluminum planks with 3m undercoating.

[GrampaKilt]

After filling the larger gaps there's still a tendency over time, weather, heat and surface movement for cracks to appear in the caulk. Taking a page out of why drywall seams are taped, I now embed fiberglass drywall tape or even fiberglass cloth in whatever crack sealer is being used. GK

[Diversteve]

We sealed our wheel wells with a spray on sealer.  Still noticed a little water when travelling during heavy rains, turned out to be water coming in where the water lines penetrated the floor near the water heater. We cleaned out the old spray foam sealer and carefully spray foamed the area again. This fixed the water problems.

[dlb53151]

Can someone please post a pic of the section in the wheel well area that you sealed?  That will help me make sure I got it covered - thanks.


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[DavidM]

The horizontal line was caulked with a hardware store elastomeric caulk. The caulk in the back is expending foam. I caulked that area to prevent water from being slung back there and then up in between the aluminum extrusions on the floor.

David

[tt2retire]

Did you apply the caulking just on top of the felt(?) tape or both on top of and under the tape?

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[tt2retire]

Kind of hard to tell, but that "tape" could possibly be the vinyl flooring.

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[DavidM]

Did 2016 LLs still have aluminum floors or had Thor changed to composite floors by then. In any case, I would caulk both sides. Do not skimp on the caulk, particularly if you use expanding foam to fill large openings.

David

[tt2retire]

My sticker shows "DATE: 12/2015"  but I bought it as a 2016 21BHS. It does have the aluminum floors. Thanks for the advice on caulking both sides, makes sense.
Ed...

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