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Old 05-23-2013, 09:28 PM   #11
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Because it was asked about silicone...

Being that I've been dealing with a travel trailer that someone used a bunch of cheap silicone products on I would avoid silicone products on the exterior roof area at all costs.

for one thing most silcone based products are not a great sealant. Marine grade silicone sealants have made great strides, but in my opinion even they are still not as good as many other choices. Another issue is that once the silcone is cured almost nothing sticks to it, including more slicone. To reseal properly the previous silicone needs to be completely removed and the residue cleaned. If it is used on roof areas then it can affect future repairs with proper sealants (like Dicor) from getting good adhesion. Silicone lube will creep and wash over to adjacent areas.

As an aside, I suspect that Rain-X washer fluid has silicone in it. Before I learned to hate silicone seal I sealed a leaking windshield on a 1974 Dodge van with silicone seal. After a while my windshield began shedding water like a Rain-X treated window would. I never used Rain-x. I suspect that the silicone seal leached out and flowed down on the windshield. So I also learned that silicone seal can leach out silicone.

Silicone lube may be OK for the antenna mechanicals inside, but I would be careful using it if it can get out onto the roof membrane proper.

FWIW. vic
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Old 05-28-2013, 06:24 PM   #12
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Been real busy, or would have responded sooner. So I went up on the roof, and I seen a small and I mean small slit in the sealer about 1/8" long. I lubed the antenna and then went inside. I took the cover of the inside of the crank, looked inside and pushed my finger in. I could not feel or see any liquid. Then I got thinking I wonder if the rotation part of the antenna was locked in and if it was not would that leave a spot for water to get in? I plan on sealing up the tiny slit just in case, and as we are supposed to get some heavy rain tonight I have covered the floor area under the antenna crank with newspaper, and made sure the rotation part is licked in place. So we shall see and I will update after the rain!
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Old 05-28-2013, 06:37 PM   #13
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Good luck with your leak Huntsvillian. I was glad to read your post as it reminded me to lube my antennae since it had never been done yet.
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Old 05-29-2013, 03:52 PM   #14
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So it rained a lot last night, and was pretty windy too. Newspaper is as dry as a bone and shows no signs of being wet and then dry. Only thing I can think of is that the antenna rotating crank was not locked in place, as there is no sign of a leak anywhere.

I will be keeping an eye on it, in the mean time anyone know the the crank was not locked in place if that "opens" a seal or leaves it open for water to come in?
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Old 05-29-2013, 08:12 PM   #15
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I have seen Dicor self leveling lap sealant at Lowes. Bought it at my local RV dealer though. Dicor makes several different sealents make sure you get the self leveling.
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