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Old 10-27-2016, 07:11 PM   #1
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Window edge sealant

I'm moving on to the next stage of getting our coach up to snuff which is compounding, polishing & waxing the entire outside. This also includes cleaning all the storage bay seams, front & rear molding edges and resealing them with NuFlex 640 which is—as most of you know—a very permanent sealant. This sealant is per the attached callout sheet (C). Now as I move down alongside the coach and come to the windows, there is the old window tape behind the frame that has squeezed out on the sides and a little additional caulking that was added in a few areas, at some point. I want to clean that window edging up first, then compound, polish & wax and then as a last step go back to all the window edges and do a final seal. As you can see on the attached callout sheet and a picture of one of my windows, the callout sheet doesn't specify anything around the windows themselves. Since NuFlex 640 is to permanent of a sealer and silicone is a definite no no, how about using ProFlex RV Flexible Sealant - Clear around these window edges? If not what would you suggest?
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Old 10-28-2016, 12:20 AM   #2
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Originally Posted by marjoa View Post
I'm moving on to the next stage of getting our coach up to snuff which is compounding, polishing & waxing the entire outside. This also includes cleaning all the storage bay seams, front & rear molding edges and resealing them with NuFlex 640 which is—as most of you know—a very permanent sealant. This sealant is per the attached callout sheet (C). Now as I move down alongside the coach and come to the windows, there is the old window tape behind the frame that has squeezed out on the sides and a little additional caulking that was added in a few areas, at some point. I want to clean that window edging up first, then compound, polish & wax and then as a last step go back to all the window edges and do a final seal. As you can see on the attached callout sheet and a picture of one of my windows, the callout sheet doesn't specify anything around the windows themselves. Since NuFlex 640 is to permanent of a sealer and silicone is a definite no no, how about using ProFlex RV Flexible Sealant - Clear around these window edges? If not what would you suggest?
I had a bad leak on a bedroom slide and used Proflex RV Sealant, works great. I used the blue paint tape to make a straight edge. That was 3 years ago still looks the same as when I put it on. It is clear and thick and takes 24 to 36hrs to dry. I have sealed both front and rear caps with it.
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Old 10-28-2016, 01:47 AM   #3
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I was under the impression that it was ok to use silicone around the top third of the windows. Did I get this wrong?
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Old 10-28-2016, 09:52 AM   #4
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I was under the impression that it was ok to use silicone around the top third of the windows. Did I get this wrong?
No you did not get it wrong. When it come to sealing around windows, Flex Shot Clear Sealant works great and EZ to use. Pro Flex is harder to use but it should work if you have the time.
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Old 10-28-2016, 06:44 PM   #5
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No you did not get it wrong. When it come to sealing around windows, Flex Shot Clear Sealant works great and EZ to use. Pro Flex is harder to use but it should work if you have the time.
Target : Expect More. Pay Less.
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From the OP.
After everything I've read over the past few months, Silicone is a big no no because:
1) Mold can grow under it
2) You can't come back over it later on with another layer because it won't stick to itself
3) Removing it later on is the biggest PIA ever and almost impossible to remove
4) Their are many other sealant choices without these down falls...
5) Flex Shot Clear Sealant is a silicone based sealant

Would like input from others here please.
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Old 10-28-2016, 09:42 PM   #6
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Every RV I have owned used Butyl Putty Tape for sealing the windows.
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Old 10-28-2016, 10:11 PM   #7
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Every RV I have owned used Butyl Putty Tape for sealing the windows.
Mel
I have every window done on my coach by Dave Root in Bend, Oregon.
https://www.daverootrvglassrepair.com/home.html
All pulled and cleaned (fogged) and replaced and they did use the putty tape to reinstall (but) they put a beed of silicone across the top and a 1/3 of the way down the window. Silicone should never be used on any of the roof seam because nothing will stick to it if you have to reseal a seam.
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