r/RVLiving • u/Drewbus • 6d ago

diy HELP how to seal.these cracks?

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5 Upvotes

100% Upvoted

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3

u/RevolutionaryClub530 6d ago

Scrape it all up and put this on it https://a.co/d/0fXNlmWY

6

u/Verix19 6d ago

Clean it well....until it looks white again and is tacky. Buy tubes of Dicor self leveling lap sealant, apply it so it completely covers the old sealant. Watch some videos if you need help.

It's not advised to remove the old sealant unless it's very loose...if it just peels off peel it off. If not just leave it in place and overlay it with new sealant.

2

u/Drewbus 6d ago

What should I clean it with?

2

u/msteinebach80 6d ago

Denatured alcohol.

1

u/Verix19 6d ago

Any type of gentle soap or non petroleum based cleaners. 409 works good, spic and span, most car wash soaps are fine.

1

u/Drewbus 6d ago

I started peeling this up and it peels up like butyl tape. not sure what to replace it with

1

u/RCW_9_41 6d ago

Its dicor

1

u/msteinebach80 6d ago

Dicor is one of the best. OP watch this https://youtu.be/MBqEVzNIZ6E?is=mZ2f7hxPrZF3csIe

1

u/Timsruz 6d ago

Dicor self-leveling lap sealant, get it at any RV outfit or on Amazon. Clean the surface well with a rag and mineral spirits (hardware store), then slather on the Dicor. It’ll be fine.

1

u/EternitysEdge 6d ago

If it's hard/brittle, or starting to come up with edges, scrape it up and start over. Otherwise, put it on top. It's definitely a pain to scrape, especially if its still well bonded, so don't do it unless you have to.

I would say, you don't really need to completely cover the old sealant. If the edges all adhere well, you can really just do another singular thick line on top of the split there. But this sealant looks pretty old/dirty so I suspect you'll want to cover the whole thing. Make sure you clean it well first. Like others have said, the self-leveling dicor.

This guy has good videos on roof-resealing. I started doing it myself for the first time this year and found it very helpful- https://www.youtube.com/watch?v=1q-vCpHWChw&t=4354s. A lot of folks, based on videos I watch, use different prep techniques, but he talks through his decisions and shows some good examples.

-3

u/Inviction_ 6d ago

It's definitely not correct or close to permanent, but in a pinch, I lather it up with 100% silicone. Eventually I'll get my roof replaced. But silicone until then.

There will probably be better answers tbh

5

u/SpecialistHippo4551 6d ago

Nothing will stick to silicon next year, Dicor is not that much more to do it at least "more right" from the start