Forum Discussion
bkenobi
Oct 12, 2022Explorer
UPDATE 2022 Oct 12:
I cut back all the spray foam that was sticking out and made the wheel well pan tabs flush to the fiberglass siding. I had to remove the rubber cover and the screw down strips to get full access which required cleaning the factory silicon all the way across both sides which was fun. Iafter cleaning the surfaces, I installed eternabond as recommended. Since the silicon didnt hold the first time, i decided to use ProFlexfor as my caulking product. I put a dab in each screw hole for good measure.
On completion, all looked great. I had no issues with water with the soaker hose so was satisfied.
Fast forward to last week where I drove the rig ~3000 miles to southern Utah. I cant say there are any leak issues since the minimal rain we experienced did not make it inside. That said, i see why the fender leaked in the first place. The material appears to expand in the sun so no sealant would ever hold. I can post a picture, but basically when parked or driving on a 80F day the side in full sun buckled between the screws exposing a 1/8" gap between the screws at the front. If the sealant is required for waterproofing then this is a garbage material selwction!
I cut back all the spray foam that was sticking out and made the wheel well pan tabs flush to the fiberglass siding. I had to remove the rubber cover and the screw down strips to get full access which required cleaning the factory silicon all the way across both sides which was fun. Iafter cleaning the surfaces, I installed eternabond as recommended. Since the silicon didnt hold the first time, i decided to use ProFlexfor as my caulking product. I put a dab in each screw hole for good measure.
On completion, all looked great. I had no issues with water with the soaker hose so was satisfied.
Fast forward to last week where I drove the rig ~3000 miles to southern Utah. I cant say there are any leak issues since the minimal rain we experienced did not make it inside. That said, i see why the fender leaked in the first place. The material appears to expand in the sun so no sealant would ever hold. I can post a picture, but basically when parked or driving on a 80F day the side in full sun buckled between the screws exposing a 1/8" gap between the screws at the front. If the sealant is required for waterproofing then this is a garbage material selwction!
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