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Old 04-30-2018, 03:48 PM   #1
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Roof Help Please - lots of pics

Hello, I need to do something about the caulking on my Rockwood Roo 233s. I have never done any of this before and so I am watching videos and asking for advice. Can I use the Dicor self leveling sealant OVER what is there now?? Or do I need to remove the old goop first? I also want to put Externabond over the sealant when I am done.
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Old 04-30-2018, 03:50 PM   #2
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For me personally I would remove as much as possible
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Old 04-30-2018, 03:52 PM   #3
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Having trouble loading pics from my cell. Ugh
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Old 04-30-2018, 04:00 PM   #4
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Originally Posted by Bethers View Post
Hello, I need to do something about the caulking on my Rockwood Roo 233s. I have never done any of this before and so I am watching videos and asking for advice. Can I use the Dicor self leveling sealant OVER what is there now?? Or do I need to remove the old goop first? I also want to put Externabond over the sealant when I am done.
Remove ALL that old crap. Not just most of it, ALL of it. then apply eternaBond tape.

https://www.amazon.com/EternaBond-RS...ternabond+tape

When your done with that, apply this to the whole roof. gutter to gutter.

http://rvroofing.com/products.html
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Old 04-30-2018, 06:36 PM   #5
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Remove ALL that old crap. Not just most of it, ALL of it. then apply eternaBond tape.

https://www.amazon.com/EternaBond-RS...ternabond+tape

When your done with that, apply this to the whole roof. gutter to gutter.

products
THANK YOU!!!! Just to clarify, do you mean that I don't need to apply the Dicor self leveling sealant?
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Old 04-30-2018, 06:55 PM   #6
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THANK YOU!!!! Just to clarify, do you mean that I don't need to apply the Dicor self leveling sealant?
The choice is yours. the tape is easier.
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Old 04-30-2018, 07:10 PM   #7
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THANK YOU!!!! Just to clarify, do you mean that I don't need to apply the Dicor self leveling sealant?
You don't need both. Tape alone is fine.
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Old 04-30-2018, 07:39 PM   #8
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The choice is yours. the tape is easier.
Thanks!
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Old 04-30-2018, 07:39 PM   #9
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You don't need both. Tape alone is fine.
Thank you!
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Old 04-30-2018, 08:10 PM   #10
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Bethers...

pull up as much of the old Dicor that you can

I used a razor blade to slice thick sections off the top of the Dicor that was stuck on the camper and used a windshield ice scraper to try to remove the Dicor as I did not want to gouge the roof material. Any Dicor that was stuck real well I left on, although I cleaned dirt and crud off with mineral spirits followed by rubbing alcohol to remove all traces of the mineral spirits which can damage the roof material if left on for any amount of time. I was surprised how well the mineral spirits cleaned the gunk build-up off the Dicor and the roof material.

Don't be afraid to just cover the old Dicor as long as you can overlap at least 1/2 inch onto roofing material or flashing while covering all old Dicor and seams.

Just eliminate using Dicor altogether as the Eternabond will do the job the Dicor is designed to do.

see my video here...

Roof preventive maintenance
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Old 04-30-2018, 08:28 PM   #11
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X2 on the Eternabond as others have said. It's warranted for 10 years if properly applied.
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Old 05-01-2018, 12:13 PM   #12
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I removed most of my 3 year old caulk and replaced it with Eternabond. Some of the caulk comes up easy. I warmed it up with a heat gun. Made it come off easier.
Be sure to follow the instructions for Eternabond installation. It is fantastic when applied properly.
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Old 05-01-2018, 12:54 PM   #13
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You don't need both. Tape alone is fine.
It also does not dry and crack. A Much more permanent solution than Dicor
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Old 05-01-2018, 05:08 PM   #14
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You don't have to strip it all if it is dicore. If there is any sign of silicone it must be removed. Eternabond and dicore sealant will not adhere to silicone. I use the eternabond first then hit the edges with dicor. I have not had to fix a leak twice since.
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Old 05-01-2018, 05:31 PM   #15
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Use a heat gun to remove hard caulk on the sides. I wouldn't use it near the EPDM roof. Fortunately the Dicor self-leveling stuff (Lap Sealant) doesn't stick that well or harden and is pretty easy to lift.

Use a plastic scraper, not a metal one, except when you are using the heat gun.

Something no one else has mentioned yet: there are TWO kinds of Dicor:
--The Lap Sealant (self-leveling) kind which is meant to be used on horizontal surfaces like the roof and roof apparatus. It "flows" a little after it's applied which makes for a more attractive result.
--The Non-Sag kind which is meant for vertical surfaces (walls, etc.). It's also called Lap Sealant

If you decide to go with Dicor, be sure to use the right kind in the right place.

If you use Eternabond, its adhesive bleeds just a little bit at every edge. It doesn't affect the grip, but the exposed sticky edge attracts dirt and can look unsightly. For best results, run a tiny bead of caulk (e.g., the appropriate Dicor Lap Sealant) around every edge to contain the adhesive.
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Old 05-01-2018, 05:44 PM   #16
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Quote:
Originally Posted by GaryNc View Post
For me personally I would remove as much as possible


I agree with GaryNc, put new material over good area. Do not try and short cut the repair
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Old 05-01-2018, 05:55 PM   #17
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You don’t need to remove the old caulk before applying the Eternabond but you do need to clean it. You can clean it with Mineral Spirits or the cleaner spray that Eternabond sells. I tried acetone and it didn't work very well.
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Old 05-02-2018, 08:06 AM   #18
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Cleaning is the key whichever way you go. If you want a good repair that won't leak, spend time getting the area clean with mineral spirits and your tape or dicor will stick like mad. Roof repairs are no fun, but with a little experience you can keep your roof in good shape. Many RV'ers never even get up there to look until it leaks.
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Old 05-02-2018, 08:38 AM   #19
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One more thing...

Before you start, buy a good foam kneeling pad or some strap-on knee pads. Roof work is hard on the knees, and if you're getting sore, you'll be tempted to shortcut the job.

See "Zen and the Art of Motorcycle Maintenance" by Robert M. Pirsig. It applies to RV maintenance, too.

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Old 05-02-2018, 01:35 PM   #20
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WOW, you guys are the BEST!!! Thank you so much for all the advice and suggestions. For a girl who has never does this before, I am gonna give it a go. I will take my time and do it right. (knee pads do sound like a good idea...). Luckily I have not had any leaks, but it has been raining like crazy here. Crossing my fingers that nothing happens before I can fix this. I am definitely trying to be proactive here. When I called around I got quotes up to $1800 which made my jaw drop to the ground....so I truly appreciate all your help. As the little engine said, "I think I can....I think I can.....LOL
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