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Old 06-13-2014, 06:04 PM   #1
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Best Caulking

What has been ur history with caulking, there's lots on the market, what has been ur best result using caulk out of caulking tubes to seal all types of water proofing on ur rv's.
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Old 06-13-2014, 06:15 PM   #2
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Dicor is tops.
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Old 06-13-2014, 06:21 PM   #3
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Dicor is tops.

Agreed
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Old 06-13-2014, 06:25 PM   #4
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caulking

I know they have self leveling for the roof, what do u use on verticle surfaces ?
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Old 06-13-2014, 06:37 PM   #5
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I know they have self leveling for the roof, what do u use on verticle surfaces ?

Dicor also makes a regular calk for verticle surfaces. It lasts.
Never ever use silicone
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Old 06-18-2014, 10:19 PM   #6
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Can anyone tell me why silicone can not be used on an RV? I always see warnings against using it but I have never been given a reason. My last travel trailer had a rip in the aluminum siding that I sealed with silicone and it never leaked a drop and was still there when I sold the trailer18 years later.
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Old 06-19-2014, 07:02 AM   #7
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Can anyone tell me why silicone can not be used on an RV? I always see warnings against using it but I have never been given a reason. My last travel trailer had a rip in the aluminum siding that I sealed with silicone and it never leaked a drop and was still there when I sold the trailer18 years later.

On a vertical surface you have less chance for leaking. Maybe you were lucky!

Silicone will shrink and separate in a crevace when exposed to sun/water. You can not repair or reseal over cured silicon because nothing will adhere to it - not even fresh new silicon. So for a repair or reseal you have to completely remove the old silicon sealant, all of it, every little fragment and residue.
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Old 07-01-2014, 12:40 PM   #8
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Silicon is the devil! Once dried, nothing can stick to it (including silicon). If there's a failure, and good chance of that, it's a bear to remove and removing it and resealing is the only way to fix it correctly. That said, I'm not a huge fan of Dicor. I know it's the standard for RVs, but it's not my cup of tea. I do like the fact that Dicor is easily removable, which is what I do if I see it. For me, 3M marine adhesive sealant is the ticket. Stuff is appropriate for use under the waterline on boats in saltwater, so it will work just fine on a Winnie in the rain. 5200 is incredibly strong and permenant but not UV stable (this can be found at Home Depot, surprisingly). 4000UV is, as it's name might suggest, is UV stable and its bond strength is more appropriate for RVs. the "Fast Cure" varieties cure in 24 hrs. The regular curing versions take 7 days. Fast cure is not self-leveling. Regular cure is largely self leveling. I think it only comes in white or black (perhaps grey, but not sure). 5200 and 4000Uv are paintable, I believe. I've never had any sort of vinyl roof, so I can not attest to its appropriateness for that. Can be ordered from marine shops or even Amazon. Instructions suggest using whole tube (or cartridge) as it will harden. I simply refrigerate any unused material and it seems to last a reasonable time. As an added bonus, uncured product will clean up with plain old rubbing alcohol. I use this stuff on my boat and it's the go-to product for many boat owners. Turned my leaky race trailer (had Dicor) into a water tight shell. Also, finally, has a good amount of flex, so won't let loose because of RV flexing. Here is the spec sheet: http://multimedia.3m.com/mws/mediawe...6EVs6E666666--
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Old 07-13-2014, 09:23 AM   #9
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Interesting recommendation on the 4000UV stuff. Do you have any reference as to how long it lasts or failure rate?
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Old 07-13-2014, 12:38 PM   #10
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Spec sheets and personal experience with both. In my opinion, there's no comparison.
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Old 07-14-2014, 03:38 PM   #11
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I read somewhere that Proflex RV sealant is a good caulk. Is it as good as Dicor? I have a leaky window and I just bought some Proflex and I was going to put it around there
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Old 07-14-2014, 04:22 PM   #12
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A similar discussion occurred on a different, not nearly as cool, site some time back. Perhaps this helps or not: Trailer Life Magazine Open Roads Forum: Tech Issues: Caulking Removal...
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Old 07-15-2014, 08:08 AM   #13
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Interesting read.
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Old 08-11-2014, 10:06 PM   #14
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Well, tried 4000UV on a TPO roof. Sticks like white on rice. Nice.
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