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Old 11-28-2019, 01:48 PM   #1
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Don't use silicone?

I started a thread about a leak from under the dash of my Outlaw 38RE.

I ended up buying some silicone caulking at lowes and sealing the heck out of my drivers side window. Had a light rain and no leak so far. But it was really a drizzle.

When I told my buddy that I'd sealed the window his first response was "you didn't use silicone, did you?"

He says that it'll crack and leak again in a season. Mentioned Butyl.

How badly will the silicone get?
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Old 11-28-2019, 02:01 PM   #2
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Silicon for the windshield is a temporary fix while you wait for a glass company (Safelite AutoGlass) to come out to a make a perminate repair.

They will/should suggest reinstalling the window.
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Old 11-28-2019, 02:20 PM   #3
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It's not the windshield. It's on the drivers side window. I just caulked around the top and sides. Caulked around the side view mirrors as well.

I guess my real question is - will I have to remove the silicone and redo with butyl caulk in the spring?
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Old 11-28-2019, 02:42 PM   #4
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I used DAP Dynaflex 230. From reading a few other places it appears to be a good choice.

https://www.dap.com/media/73097/dyna...-clrs_5-14.pdf
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Old 11-28-2019, 03:58 PM   #5
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Been using silicone for years. Haven't had to replace any yet. The stuff they used at the factory is cracked and has caused leaks. And I have had some really bad inconvenient leaks..........not that any leaks are convenient. I mean leaks in down pours.
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Old 12-08-2019, 12:28 AM   #6
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Do not use silicone on an RV window. The problem with silicone is that NOTHING will ever stick to it afterwards, including more silicone. If the window still leaksvafyer applying silicone, your only option it to completely scrape it off, chemically remove the residue and re-caulk with something else.
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Old 12-08-2019, 03:20 AM   #7
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Don't believe the hooey about using silicone around the tops of your windows. My last coach came from the factory with silicone around the window frames. I did have to re-caulk a couple over the years I owned it, but they never leaked. The dicor on the roof, now that was another story.
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Old 12-08-2019, 01:32 PM   #8
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I recommend this stuff - it comes in several different colors including the clear listed below:

https://www.amazon.com/Geocel-GC2810...s%2C186&sr=8-6

Happy Outlaw travels!
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Old 12-08-2019, 02:05 PM   #9
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THOR #9033
IF you need to get rid of it, after scrapping, Goo Be Gone has a product that is a caulking remover. Works well.
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Old 12-08-2019, 02:09 PM   #10
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The advice I have often heard is that dicor self leveling must be used on the roof, and silicone can be used anywhere else. (Something about the membrane & silicone don't mix well.)
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Old 12-08-2019, 02:28 PM   #11
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Use Lexel, a lot better than silicone!
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Old 12-08-2019, 02:50 PM   #12
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A few years ago Thor recommended I use Geocel 2300. There are different varieties for different applications. I did and it stayed in place and worked for a few years
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Old 12-08-2019, 06:55 PM   #13
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Quote:
Originally Posted by Lt Keefer View Post
Don't believe the hooey about using silicone around the tops of your windows. My last coach came from the factory with silicone around the window frames. I did have to re-caulk a couple over the years I owned it, but they never leaked. The dicor on the roof, now that was another story.
https://blog.sashco.com/blog/0617201...stick-silicone
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Old 12-08-2019, 08:01 PM   #14
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Quote:
Originally Posted by jgwmjw2 View Post
As with all things you have to consider the source. One blog says No, while another says Yes.

Can I apply new silicone atop, or alongside old silicone caulk?
It is recommended that any old silicone is removed. While new, freshly applied silicone can be applied & will bond to old silicone Ė the bond isnít as strong as if it were applied to a clean surface.

https://www.everkemproducts.com/reso...q/#appnewonold
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