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Old 09-05-2013, 07:47 PM   #1
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Roof sealent choices for coax wire

I just ran a new antenna coax wire through the roof and need to seal around it. I've been on dicors website for 30 minutes and havent really found the answer as to which sealent to use. Its just a small job, later I plan to remove the 14 tubes of caulk and recoat the entire roof.

Dan
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Old 09-05-2013, 08:46 PM   #2
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I used Dicor self-leveling caulk to seal my coax for TV antennae. Since it 'flows' it made a very nice fill of the opening.
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Old 09-05-2013, 10:55 PM   #3
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Quote:
Originally Posted by BFlinn181 View Post
I used Dicor self-leveling caulk to seal my coax for TV antennae. Since it 'flows' it made a very nice fill of the opening.
Same here.

Chuck
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Old 09-05-2013, 11:00 PM   #4
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If the hole is too big I think I'd use some of the putty like tape to plug any large openings to keep the Dicor self leveling from going too far then seal all around the hole and wires.
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Old 09-05-2013, 11:04 PM   #5
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Ditto Mr_D
Clean surface and go for it.
Have your 90degree bend in the cable first as it's a sealant not a glue.
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Old 09-06-2013, 09:04 AM   #6
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If I haven't been able to find a suitable grommet, I've always used RTV. I apply it so that when it cures it is attached to the outside and inside of the roof (like a grommet). I'm sure my results aren't as pretty as the self-leveling stuff, but since it is on the roof...

If I do use a grommet, I seal it to the roof and to the cable with RTV.
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Old 09-12-2013, 09:19 PM   #7
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BargainBoatParts.com - Cable Clams

These are handy.
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Old 09-13-2013, 08:21 AM   #8
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Silocone will shrink up over time. 3M 5200 seals all.
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Old 09-13-2013, 08:25 AM   #9
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I also used Dicor self leveling compound but I installed a low profile, exterior electrical junction box. I drilled a 3/4" hole and aligned it with the hole in the junction box and then set the box in a bed of the sealant.

This way I figure I have a ready made pass through if I ever need to run more cable/wire through the roof.

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Old 09-13-2013, 08:43 AM   #10
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I would use the Dicor 502LSW self-leveling sealant. It smooths out really nice after application. I talked to Dicor before getting it since the dealer had the 501LSW AND the 502LSW. They advised me to use the 502LSW, saying that's what most professional RV techs use and that it flows better.

Good luck, happy trails, and God bless!
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Old 09-13-2013, 02:27 PM   #11
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You don't say where the hole is in relation to whatever component you are connecting the cable too, or how big the hole is. Those issues would affect my solution options.
As far as a sealer, I use 5200 on items I want to stick to the roof.
If your rig has a few years on it, check everything sealed with Dicor goop and see how much of it is still stuck to the flanges of the components.
That stuff is made for initial assembly where speed of install and minimal shaping or cleanup is paramount. Subsequent leaks and repairs are down the road a few years and owners.
We go a lot faster than a boat. I wouldn't intentionally stand the cable vertically in the wind if I could avoid doing so.
I would lay the cable horizontal to the roof. There are a number of sizes of small stainless clam shells available at marine suppliers you can consider.
I have several items on my roof I made out of aluminum, had them powder coated and installed them with 5200. They are not going to leak... ever!
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