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05-26-2020, 11:09 AM
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#1
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Member
Join Date: Apr 2016
Location: St. Louis, Misery
Posts: 33
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Flex-Seal, Anyone?
My recent TV viewing is being deluged with commercials for Flex-Seal products - including one where an RV roof is being touched up. What experiences have members had with any of these products as relevant to RV maintenance?
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05-26-2020, 11:33 AM
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#2
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Senior Member
Join Date: Feb 2017
Location: Pinellas Park, FL
Posts: 1,117
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Quote:
Originally Posted by BobDye1
My recent TV viewing is being deluged with commercials for Flex-Seal products - including one where an RV roof is being touched up. What experiences have members had with any of these products as relevant to RV maintenance?
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I have a roll in the RV and have used it to fix my computer keyboard. It's almost good for that. I'd not use it anywhere on the RV that wasn't EXTREMELY temporary. Eternabond tape in the other hand I have used and it does hold up on the outside of the rv (and I also used it to seal the inside of my shower when I rebuilt that. No water will ever get behind the walls of my shower ever again.
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Thom and Diane Boles
2010 Winnebago Vista 32K **2013 Mini Cooper S Roadster **
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05-26-2020, 12:01 PM
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#3
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Senior Member
Join Date: Jul 2010
Posts: 5,337
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I find the commercials annoying, same for the magic hoses, digital TV antenna’s, super duper frying pans, but at least they are not the Medicare commercials. As far as flex seal, I might use it for a temporary patch.
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Tom
2016 Newmar Bay Star Sport 3004
2021 Jeep Gladiator Sport Willys
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05-26-2020, 12:14 PM
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#4
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Senior Member
Join Date: May 2010
Location: La Marque, Texas
Posts: 269
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It has no U/V protection and will break down quickly when exposed to sunlight.
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2000 Fleetwood Pace Arrow Vision 36B
1999 V10 Triton Engine w/4R100 Trans.
Retired and full timing.
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05-26-2020, 12:24 PM
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#5
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Senior Member
Join Date: Jul 2019
Location: Upstate SC
Posts: 2,977
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There was another thread about this a while back. Consensus was that it's OK for very short term bandaid type fixes and that's about it. That's also what I have found.
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05-26-2020, 12:26 PM
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#6
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Senior Member
Alpine Owners Club
Join Date: Oct 2019
Location: Hoodsport Wa
Posts: 3,147
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I used the white flex seal in a pint can to repair a cracked dome above the shower. Several of the screw holes spider cracked. Poured the entire contents around the perimeter of the dome, as a temporary fix until I replace it. That was last fall, seems to be holding up well. The ONLY reason I used it was because I was out of Dicor.
Would I use it as a permanent solution for RV roof repairs?
No. As others have stated it lacks uv protection.
My "temporary" fix will be my evaluation, if it starts leaking again it just drips in the shower.
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2000 Alpine 36 FDS #74058
04 Jeep Wrangler TJ
"On the road to find out..."
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05-26-2020, 12:34 PM
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#7
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Member
Join Date: Feb 2018
Location: Plainfield, CT
Posts: 77
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Used some of the spray on white to seal the roof on an old travel trailer we were using for storage that had roof leaks. Didn't last 6 months before it failed. Sun exposure killed it.........
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2007 Jayco Greyhawk 33DS, 8.1 Vortec, towing a 2007 Honda Element or a 2000 Mazda Miata LS.
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05-28-2020, 05:51 AM
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#8
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Senior Member
Join Date: Mar 2016
Posts: 582
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I used the liquid from a can to seal a leaky lower storage compartment. I painted a very think coat on the outside of the compartment and has held for a year so far. There are better things to use for roof repair and would not use it for that.
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05-28-2020, 05:56 AM
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#9
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Senior Member
Join Date: Feb 2020
Posts: 187
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Its not even good for a temporary repair.
Everything flex seal makes has petroleum distillates in it which will make EDPM roof swell to some degree. Whether it will bother TPO ones??
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05-28-2020, 06:02 AM
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#10
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Senior Member
Join Date: Jun 2017
Location: Bryan Tx
Posts: 1,023
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Had a leak on my crank up tv ant where the wires came up thru a flex tube and small cracks on the base of it. That was about 2 years ago. It sat outside in several rainstorms afterwards until I got the cover built. Still doing great. Not the rv but repaired a crack on a outer plastic tub on a washing machine that gets used daily over a year ago. The pint can said it has UV Protection. Wife loves her 25 year old washing machine and refuses to give it up.
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“06” Beaver Patriot Thunder , 525 HP C13 Cat
MH 4000 Allison
42 ft Vicksburg, 4 slides
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05-28-2020, 06:14 AM
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#11
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Senior Member
Join Date: Aug 2019
Location: MN
Posts: 2,813
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I accidentally sawed my RV into two huge pieces lengthwise with a chainsaw, but fortunately I had 38 rolls of Flextape in my garage and was able to repair the RV quickly, with no leaks.
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1993 Rockwood 28' Class C - Ford E-350 7.5L
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05-28-2020, 08:44 AM
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#12
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2006
Location: Northwestern Montana
Posts: 3,514
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But wait, we’ll double the offer! Just pay a separate fee...... 
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Dieselclacker
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05-29-2020, 05:57 AM
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#13
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Senior Member
Monaco Owners Club
Join Date: Aug 2015
Location: reynoldsburg, ohio
Posts: 432
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while we haven't had to use it on the coach, i would not hesitate to use it in an emergency (think duct tape)................it does hold pretty firm........we had a couple of pool float lounge chairs that developed small "holes" from where they were creased during storage..........i smeared flex seal on the leaks and let it dry........reinflated.............the "patch" held firm for a couple of years........in fact, the actual plastic gave way and weather cracked, while the patch held firm.............i think it is pretty good stuff for what it is...............
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05-29-2020, 10:40 AM
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#14
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
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Quote:
Originally Posted by BobDye1
My recent TV viewing is being deluged with commercials for Flex-Seal products - including one where an RV roof is being touched up. What experiences have members had with any of these products as relevant to RV maintenance?
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Some of the products contain petroleum byproducts. I bought a can of white paint/sealant, didn't read the label until I got home. 
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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