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Old 03-17-2008, 07:01 AM   #11
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Re: How to seal leaky windows !!!

SikaFlex. Found at your local marine stores. Water tight like a Dolphins ass.
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Old 04-03-2012, 05:34 PM   #12
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Re: How to seal leaky windows !!!

Quote:
Originally Posted by IsolationRide
SikaFlex. Found at your local marine stores. Water tight like a Dolphins ass.
Haha...Beautiful! Thank you for the vivid description...Good enough for a Dolphins ass at 20meters, good enough for me!
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Old 04-03-2012, 07:42 PM   #13
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Re: How to seal leaky windows !!!

If you use $ikaflex, make sure it is well within the expiration date. I used a tube (252-W adhesive) on our popup that had a month to go and I simply did not have the muscle to get the goo out of the tube (I used it to glue the FRP panels in the inside of the popup). There are all kinds of Sikaflex and they all seem to be pricey.

I would suggest that you use an elastometric caulk made for repairing leaky roofs (I used Henry's 212 Clear on the bus' fixed glass). I used that to fix a leak on the rear window of the Class C. The water would run off the back side of the RV in a a steady flood and literally beat the latex caulk out (I didn't have much as I had ran out of elastometric and finished up the window install with latex caulk). I finally used the Henry's to seal it. No leaks since. I used a whole tube per window of siliconized latex caulking (for installing doors & windows) when I reinstalled our opening windows (original window frame to metal bus frame, and seated the bottom of the window frame in a heavy bead of caulk). So far no leaks. But I also have the Blue Bird gutters over each window. I think you need to divert the water off the glass with a "J" channel or "L" channel in addition to caulking your windows. Don't use silicone. I pulled globs of that off our windows (both the Class C and the bus.... did not stop any leaks.. just made a mess.

Just my experience.
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Old 04-04-2012, 12:38 PM   #14
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Re: How to seal leaky windows !!!

What is wrong with using the tubes of automotive windshield stuff.. That's what i have used since it came out. it seals extremely well around windows, plugs holes, etc. It is black, costs around $15 or so a tube and can only be purchased from the automotive paint places.. They also sell many adhesives in tubes specifically designed for auto construction and repair that work very well for conversion projects. (like bonding metal together, sealing joints, repairing car bumpers that are torn, etc)
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Old 05-06-2015, 12:03 PM   #15
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Polyurethane

Any advice on using polyurethane to re-seal windows? We found some leaks too and were about to go get our floor framing/insulation and decided this needs to get fixed first. We have some polyurethane left over from filling floor holes and since it's water tight, flexible, and can be used on virtually any surface I wondered if anyone else has used it or heard of it. We eventually want to replace windows but I think for now we will just work with what we have. We are definitely replacing some with aluminum sheets later on but it's going to be raining here for days..which gives me plenty of opportunity that find the holes I guess lol
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Old 05-06-2015, 12:07 PM   #16
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Quote:
Originally Posted by chev49 View Post
What is wrong with using the tubes of automotive windshield stuff.. That's what i have used since it came out. it seals extremely well around windows, plugs holes, etc. It is black, costs around $15 or so a tube and can only be purchased from the automotive paint places.. They also sell many adhesives in tubes specifically designed for auto construction and repair that work very well for conversion projects. (like bonding metal together, sealing joints, repairing car bumpers that are torn, etc)
As long as surfaces are cleaned and prepped properly, this stuff is great.

I have even used it to seal wheel barrow tires.

However, you will never get the window out in one pieces ever again.

Nat
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Old 05-07-2015, 03:37 PM   #17
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What is the name of the black auto sealant people are using? I found a few kinds but didn't know which brand was best or if it even mattered. Thanks all, great tips and advice as always
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Old 05-07-2015, 08:02 PM   #18
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Then there is "Automotive Seam Sealer". Several brands including 3M I believe. Avail at auto paint suppliers. Same thing that is used at the factory for a range of sealing needs. Waterproof, UV stable, remains flexible, comes in black, white gray & tan (that I've seen) and is paintable.

Also removes pretty cleanly when necessary.
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Old 03-28-2016, 11:12 AM   #19
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I've got black roof seam sealant left over from my roof. As it was advised not to use silicone I'll probably try this roof stuff
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Old 03-28-2016, 11:35 AM   #20
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Quote:
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Then there is "Automotive Seam Sealer". Several brands including 3M I believe. Avail at auto paint suppliers. Same thing that is used at the factory for a range of sealing needs. Waterproof, UV stable, remains flexible, comes in black, white gray & tan (that I've seen) and is paintable.

Also removes pretty cleanly when necessary.
I used the 3m automotive seam sealer and it worked out great. Also can remove it if necessary if you go slow, it pops right off. I would imagine that roofing seam sealer would be similar.
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