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Open Roads Forum  >  Travel Trailers  >  General Q&A  > How to re-caulk RV trailer roof? Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next peterspeter • View posts Ontario, Canada New Member Joined: 09/14/2022 View Profile Offline Posted: 09/14/22 11:22am Link  |  Quote  |  Print  |  Notify Moderator I'm recaulking my RV trailer. Going well except these heavy lines of something slathered on the roof. When I try to lift, it seems the rubber roof lifts with it. How can this be repaired? Here is a pic of the roof: (Moderator edit to show picture) Is there a good product I can go over this with? We got the trailer for cheap and the look of the repair isn't as important as making sure it won't leak in the future. For the smaller caulk lines I'm using thermoplastic caulking that people use for caulking outdoor window trim which is going well. Thanks in advance! * This post was edited 09/14/22 05:08pm by an administrator/moderator * 2oldman • View posts NM Senior Member Joined: 04/15/2001 View Profile Offline Posted: 09/14/22 01:26pm Link  |  Quote  |  Print  |  Notify Moderator I use Heng's rubber roof seal. Thin, goes on like paint. No leaks. Would cover all that and make it look a lot better. * This post was edited 09/14/22 01:49pm by 2oldman * Lwiddis • View posts Southern California :( Senior Member Joined: 08/12/2016 View Profile Good Sam RV Club Member Offline Posted: 09/14/22 01:28pm Link  |  Quote  |  Print  |  Notify Moderator I’m a Heng’s fan too. Never look for, or care about, beauty in an RV roof. Look for recent maintenance. Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad valhalla360 • View posts No paticular place. Senior Member Joined: 08/19/2009 View Profile Good Sam RV Club Member Posted: 09/14/22 01:51pm Link  |  Quote  |  Print  |  Notify Moderator Use RV lapseal and just go over it making sure to cover the edges. Don't use random non-RV caulk. I'm not sure what you mean by "thermoplastic" but if it contains silicone, you may run into an issue where nothing will stick to it. Or if it contains harsh chemicals, it could damage the rubber roofing. Tammy & Mike Ford F250 V10 2021 Gray Wolf Gemini Catamaran 34' Full Time spliting time between boat and RV katysdad • View posts Virginia Senior Member Joined: 08/03/2010 View Profile Posted: 09/14/22 06:32pm Link  |  Quote  |  Print  |  Notify Moderator Not a repair. Original self leveling lap sealant such as DICOR. Unless loose its almost impossible to get off of the rubber without inflicting damage. Just wash roof with a mild detergent and let dry. Recoat all joints, fittings, and hardware with lap sealant for rubber roofs. Dodge Ram 3500 DRW Diesel JIMNLIN • View posts Oklahoma Senior Member Joined: 09/14/2003 View Profile Posted: 09/14/22 08:03pm Link  |  Quote  |  Print  |  Notify Moderator When applying a self leveling roof sealant over OEM sealant don't make a dam to stop the roof from draining. Big blobs across a area can cause pooling (lake effect) up there ...that ain't good. If the OEM sealant isn't loose I leave it as is. My old '97 32' 5er still has OEM sealant (80-90 percent) in most spots on the rubber roof material. There are some good self leveling sealant brands out here for resealing those loose spots. "good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers '03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach '97 Park Avanue 28' 5er 11200 two slides schlep1967 • View posts Harrisburg, PA Senior Member Joined: 12/08/2005 View Profile Good Sam RV Club Member Posted: 09/15/22 05:29am Link  |  Quote  |  Print  |  Notify Moderator What you are looking at is lap sealant. Here is a link to Amazon where you can buy it Linky or any RV place will have it.Do not use the caulk you have now. I have removed old lap sealant. On a sunny day you can use a plastic putty knife and patience to get it off. Or even a hair dryer to warm it up. Make sure the area is clean before applying the new lap sealant. Instructions can be found on the tube. 2021 Chevy Silverado LTZ 3500 Diesel 2022 Montana Legacy 3931FB Pull-Rite Super Glide 4500 2oldman • View posts NM Senior Member Joined: 04/15/2001 View Profile Offline Posted: 09/17/22 11:51am Link  |  Quote  |  Print  |  Notify Moderator coming back? Duane4238 • View posts North Tonawanda, New York New Member Joined: 07/28/2013 View Profile Offline Posted: 09/21/22 06:46pm Link  |  Quote  |  Print  |  Notify Moderator I've used the Heng's product but was not impressed. It seemed very thin to me. After 2 years it started to peel-lift. On my most recent trailer, I had a questionable area on my larger slide. After thorough cleaning, I rolled on a product I'd tried at home. It's FlexSeal Liquid. The manufacturer says it's good for EPDM roofing so I gave it a shot. It is very thick stuff, which is what I wanted and I rolled it on nice and thick. It dries into a flexible rubber. I used it 2 years ago and it still looks like new, and the slide roof doesn't leak. I'm going to go around the whole perimeter of the roof with a roller and this stuff to put a new coat of sealant on the edges. It comes in black or white. I used the white. Also comes in a paste you can put on with a putty knife if you have any open areas that need filling. Duane fallsrider • View posts Raleigh, NC Senior Member Joined: 11/11/2005 View Profile Good Sam RV Club Member Posted: 09/24/22 08:17am Link  |  Quote  |  Print  |  Notify Moderator I use the Dicor self-leveling lap sealant, as well. It sticks good and lasts. I clean the area first with denatured alcohol. Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next Open Roads Forum  >  Travel Trailers  >  General Q&A  > How to re-caulk RV trailer roof?

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Jump to Forum Dear Marcus  - Good Sam Roadside Assistance  - Good Sam Club  - Good Sam Insurance  - Camping World Accessories  - Camping World RV Sales  - Good Sam Extended Service Plan  - Camping World Service and Inst...  - Coast to Coast Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Tech Issues  - Do It Yourself Modifications a...  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Posting Help and Support Locations  - RV Parks, Campgrounds and Attr...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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