Coast Resorts Open Roads Forum: Class A Motorhomes: Which caulk to use?
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Open Roads Forum  >  Class A Motorhomes

 > Which caulk to use?

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kplender

Denver

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Posted: 07/14/10 04:21pm Link  |  Print  |  Notify Moderator

I have a rubber roof. The rubber "curls" around the side of the motorhome and goes down about 3 inches or so where it meets up with an aluminum (I believe it is aluminum) strip that runs the length of the side of the motorhome. The rubber does not go "under" the aluminum strip, it simply ends at the strip. The rubber is glued to the roof and is not coming off/up. However, the caulking that was applied where the rubber meets the aluminum strip is dried out and has stretched/cracked and is basically doing nothing at this point. Question, do I use the Dicor caulking for this? Or is there a specific caulking for this that is more of an adhesive so that it helps keep the rubber glued to the roof? Just checking before I get started on re-caulking the whole motorhome. Thanks in advance!!


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harold1946

arizona

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Posted: 07/14/10 04:33pm Link  |  Print  |  Notify Moderator

Dicor would be my choise,. Be sure to remove the old caulking and clean the surface well.


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gonzo71

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Posted: 07/14/10 04:39pm Link  |  Print  |  Notify Moderator

You say that the part you like to recaulk is on the side. Dicor is good when used on the roof top however since dicor is self leveling, it will run donw the side of the coach. I would prefer some ethernabond seal tape (sp?), it will last longer and can be applied right over the old stuff.


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alfa38user

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Posted: 07/14/10 04:41pm Link  |  Print  |  Notify Moderator

Dicor makes several different caulks. For this job DO NOT use the self-levelling type as it is likely to run a bit. Self levelling caulks are used on the flat surfaces such as around hatches on the flat roof portion


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harold1946

arizona

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Posted: 07/14/10 05:25pm Link  |  Print  |  Notify Moderator

alfa38user wrote:

Dicor makes several different caulks. For this job DO NOT use the self-levelling type as it is likely to run a bit. Self levelling caulks are used on the flat surfaces such as around hatches on the flat roof portion

Thanks: Forgot to tell him they make several products

2Trekkers

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Posted: 07/14/10 05:58pm Link  |  Print  |  Notify Moderator

Definitely use Dicor. They make one that indicates it is for skylights, etc, that is not self leveling. Silicone caulk won't stick to rubber. I bought mine at Camping World for much less than an RV dealer's parts store.

boowho

Wetmore, CO

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Posted: 07/14/10 06:03pm Link  |  Print  |  Notify Moderator

harold1946 wrote:

Dicor would be my choise,. Be sure to remove the old caulking and clean the surface well.


Any problem using "generic" silicon caulk?? I've used this stuff for almost everything and anything for years with great success.

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Boowho??

ljr869

Fallbrook, CA

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Posted: 07/14/10 06:34pm Link  |  Print  |  Notify Moderator

I prefer a new, hard caulk.... wait, that didn't sound right...


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harold1946

arizona

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Posted: 07/14/10 06:46pm Link  |  Print  |  Notify Moderator

Silicon does not do well on rubber roofs. Your dish probably comes with a gasket, if not, I would suggest using eternabond double sided tape, and then seal the edges and screwheads with dicor self leveling. A good cleaning of both the roof and antenna base with alchohol will ensure a good bond.

kdk

usa

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Posted: 07/14/10 07:02pm Link  |  Print  |  Notify Moderator

Dicor makes a product for vertical surfaces, same stuff accept it is not self leveling and would be the one to use. KDK

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