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Post Info TOPIC: Resealing Roof Vents


RV-Dreams Family Member

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Resealing Roof Vents


I was on my travel trailer roof and noticed the seals around the roof vents, antenna etc. were getting cracks and showing voids.  From my research is seems that conventional wisdom suggests it is okay to apply new self-leveling Dicor lap sealant directly over the existing lap sealant; at least for the first few applications.  This roof (EPDM) is three years old and this will be the first time the roof vents will be resealed.

It would really make me smile if I don’t have to remove the old sealant.  What are your thoughts or experiences?

Thanks,

Steve



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2017 Starcraft 26BHS Autumn Ridge TT,  2019 Chevrolet 3500 SRW Duramax 6.6 4WD TV 

Plan to retire/full-time in 2021. Favorite place to camp; Texas State Parks.

Travel is fatal to prejudice, bigotry, and narrow-mindedness..  Mark Twain 

Steve, Julie and Ethan



RV-Dreams Family Member

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Steve,

We haven't had to reseal around vents or A/C units, but I have used the Dicor to seal any cracks that I might see on the seams of the front and rear caps of the fifth wheel.  I've also used it around some of the small "vents" that aren't really vents, but access to wiring in the ceiling.  We've had our Mobile Suites since May of 2010 and have had no roof leaks, even from where I've resealed.  We also have the "rubber" roof, which I think is the EPDM.

I'd say that this could be a "first step" for you to do.

All that said, I'm sure more knowledgeable folks will be along to either agree or disagree with what I've said.

Terry



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Terry and Jo

2010 Mobile Suites 38TKSB3
2008 Ford F450
2019 Ford Expedition Max as Tag-along or Scout

Our photos on Smugmug



RV-Dreams Family Member

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Thanks for your input Terry.

It's funny though how divers the experiences are on this (and many other subjects). Some say these should be re-sealed every year and others have experiences like yours; no problems in nine years. I'm sure the environment the RV lives in is a contributing variable.

Steve

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2017 Starcraft 26BHS Autumn Ridge TT,  2019 Chevrolet 3500 SRW Duramax 6.6 4WD TV 

Plan to retire/full-time in 2021. Favorite place to camp; Texas State Parks.

Travel is fatal to prejudice, bigotry, and narrow-mindedness..  Mark Twain 

Steve, Julie and Ethan



RV-Dreams Family Member

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Date:

No leaks for me but I use Heng's once a year...just finished an preventative application.

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Winnebago TT 2101DS & 2020 Silverado LTZ Z71. 300 watts WindyNation solar w/MPPT, 2 Trojan T-125s. TALL flag pole. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state/county camps. 14 year Army vet-11B40 then 11A - old MOS 1542 & 1560.



RV-Dreams Family Member

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Thanks Larry. Tell me about Heng's.

Steve

__________________

2017 Starcraft 26BHS Autumn Ridge TT,  2019 Chevrolet 3500 SRW Duramax 6.6 4WD TV 

Plan to retire/full-time in 2021. Favorite place to camp; Texas State Parks.

Travel is fatal to prejudice, bigotry, and narrow-mindedness..  Mark Twain 

Steve, Julie and Ethan



RV-Dreams Family Member

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Posts: 786
Date:

Thicker than paint but I use a brush to apply at least yearly. I coat every seam, bubble, footprint etc. on the roof. No leaks since my initial use in 1979 on various RVs. Suggest buying a quart. It goes a long way.

www.classacustoms.com/1-Gallon-Hengs-Rubber-Roof-Coating--White_p_147.html


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Winnebago TT 2101DS & 2020 Silverado LTZ Z71. 300 watts WindyNation solar w/MPPT, 2 Trojan T-125s. TALL flag pole. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state/county camps. 14 year Army vet-11B40 then 11A - old MOS 1542 & 1560.



RV-Dreams Family Member

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Posts: 74
Date:

Looks like an interesting product Larry. Since my lap sealant already has cracks and voids (Texas sun) I assume I should apply new self-leveling sealant (Dicor) before applying the Hengs roof coating as preventative maintenance.

Steve

__________________

2017 Starcraft 26BHS Autumn Ridge TT,  2019 Chevrolet 3500 SRW Duramax 6.6 4WD TV 

Plan to retire/full-time in 2021. Favorite place to camp; Texas State Parks.

Travel is fatal to prejudice, bigotry, and narrow-mindedness..  Mark Twain 

Steve, Julie and Ethan

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