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Old 02-09-2020, 03:22 AM #1
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Sealant for Aftermarket Roof Rack?

Just received my Victory 4x4 roof rack and trying to understand what the best way is to seal the mounting holes to prevent water intrusion. Their instructions were to use a generous amount of black RTV around and in the factory mounting holes. I was planning on going this route, but wondered if there was a cleaner alternative to seal it?

Watching and reading other roof rack install videos seems that the norm is RTV, but the reason I am hesitant with glooping RTV everywhere is because I read that:
  • it's a pain to clean if you want to remove it
  • it needs to eventually be reapplied because of the constant exposure to the sun
  • filling the mounting hole with silicon sounds like a pain to deal with if I wanted to go a different route later on
Found this great post where it was suggested to use butyl tape and silicone washers, which I am leaning towards.

Any insight is appreciated. Also, recommendations on thread sealing for the bolts... thought of pipe dope or teflon tape, but sounds like blue loc-tite would work?
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Old 02-10-2020, 07:50 AM #2
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Rorck recommended me this sealant when I bought the ecotechne roof rack and I must say no issues whatsoever https://amzn.to/30DoFiP
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Old 02-10-2020, 08:40 AM #3
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Old 02-10-2020, 01:02 PM #4
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Sealant for Aftermarket Roof Rack?

I used a small amount of silicone sealant, and sourced some rubber washers in addition. If you look at how the roof rack mounts and the holes, the real risk is water in the rain channels going in between the plastic bolt guides and the roof, not down through the nut and bolt threads.




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Last edited by Brownfaux; 02-10-2020 at 01:04 PM.
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Old 02-10-2020, 01:29 PM #5
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Quote:
Originally Posted by darrensan View Post
Rorck recommended me this sealant when I bought the ecotechne roof rack and I must say no issues whatsoever https://amzn.to/30DoFiP
This. Clear RTV has held up great on my Prinsu through 9 months of blizzards, storms and high pressure car washes. Easy to source as well.
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