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Old 09-20-2020, 11:51 PM   #1
LVD
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Dicor sealant or Flex seal for roof hairline cracks in seals

Hello, I'm a newbie to this forum. Newbie for owning an RV. We recently purchased a 2015 Thor Windsport. Upon washing and inspecting the roof seals, there are hairline cracks in some areas. I'm not sure what to use for sealing those. Dicor or Flex seal? Many thanks for your advice!
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Old 09-21-2020, 12:09 AM   #2
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Originally Posted by LVD View Post
Hello, I'm a newbie to this forum. Newbie for owning an RV. We recently purchased a 2015 Thor Windsport. Upon washing and inspecting the roof seals, there are hairline cracks in some areas. I'm not sure what to use for sealing those. Dicor or Flex seal? Many thanks for your advice!


Dicor self leveling lap sealant. ONLY. Clean well first. Easy fix and keep a couple of tubes on hand.
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Old 09-21-2020, 12:12 AM   #3
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DiCor is made for just this sort of thing...
Welcome to the Forum also!
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Old 09-21-2020, 12:13 AM   #4
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Neither......

Use EternaBond Tape. It comes in several different widths and lengths depending on your needs. Here is one example....


https://www.amazon.com/Roof-Seal-RS-...s%2C296&sr=8-9


As preventative maintenance I put Eternabond Tape over every seam, joint, vent, ladder mount, antenna, etc. on the roof when I get a coach. Otherwise you are inspecting and then adding / replacing Dicor every 3 - 6 months. I only go up on the roof once a year now to clean the roof.
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Old 09-21-2020, 12:16 AM   #5
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"Different strokes..."
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Old 09-21-2020, 12:17 AM   #6
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Thank you!

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Originally Posted by Pete'sMH View Post
Dicor self leveling lap sealant. ONLY. Clean well first. Easy fix and keep a couple of tubes on hand.
Thank you!
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Old 09-21-2020, 12:24 AM   #7
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Thank you.

Quote:
Originally Posted by Pete'sMH View Post
Dicor self leveling lap sealant. ONLY. Clean well first. Easy fix and keep a couple of tubes on hand.
Thank you all for your replies. Much appreciated!
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Old 09-21-2020, 12:27 AM   #8
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DiCor is made for just this sort of thing...
Welcome to the Forum also!
Glad to have this forum!
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Old 09-21-2020, 12:30 AM   #9
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Never use Flex Seal.
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Old 09-21-2020, 12:41 AM   #10
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Never use Flex Seal.
Why not?
(Other than because of the annoying ads... )
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Old 09-21-2020, 01:05 AM   #11
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Dicor sealant or Flex seal for roof hairline cracks in seals

Dicor is a good product for what it is. The problem with Dicor is.... you have to keep a couple tubes on hand because there will be continued cracking, shrinking, etc. requiring routine maintenance.

Im all about eliminating roof leaks permanently and eliminating continued maintenance. Dicor requires inspection and a reallocation every 3 to 6 months depending on environment conditions.

Place EternaBond Tape over the seams, joints, etc. once and forget it.

And keep a roll with you in the road. If a roof leak develops due to storm damage, low hanging tree branch, etc. just apply EternaBond to the rip, rear or crack once and continue to enjoy your trip without worrying about water damage.
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Old 09-21-2020, 01:50 AM   #12
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Why not?
(Other than because of the annoying ads... )
Tried it on the roof of my old metal yard shed, it was worthless.
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Old 09-21-2020, 01:54 AM   #13
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Originally Posted by LVD View Post
Hello, I'm a newbie to this forum. Newbie for owning an RV. We recently purchased a 2015 Thor Windsport. Upon washing and inspecting the roof seals, there are hairline cracks in some areas. I'm not sure what to use for sealing those. Dicor or Flex seal? Many thanks for your advice!
forget you ever heard the word Flex Seal when it comes to RV roof. Decore and eternal bond only!
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Old 09-21-2020, 08:47 PM   #14
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Thank you all for the info. I've ordered the Dicor; looking at the tape too. So glad to have this forum
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Old 09-23-2020, 01:03 AM   #15
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Tried it on the roof of my old metal yard shed, it was worthless.


Apples and oranges. Still, a metal RV roof has me thinking. I have 2 small blemishes in my RV roof and I Flex Sealed them 3 yrs ago. The Flex seal is still bonded tight and its not even noticeable that there are 2 patches. Youd have to look hard to find them.
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Old 09-23-2020, 02:44 AM   #16
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Dicor is a good product for what it is. The problem with Dicor is.... you have to keep a couple tubes on hand because there will be continued cracking, shrinking, etc. requiring routine maintenance.

Im all about eliminating roof leaks permanently and eliminating continued maintenance. Dicor requires inspection and a reallocation every 3 to 6 months depending on environment conditions.

Place EternaBond Tape over the seams, joints, etc. once and forget it.

And keep a roll with you in the road. If a roof leak develops due to storm damage, low hanging tree branch, etc. just apply EternaBond to the rip, rear or crack once and continue to enjoy your trip without worrying about water damage.
I use eternabond, but for extra protection I lay a bead of dicor along the edge of the eternabond tape.
I have done this on numerous rv's, and they never leaked afterwards.
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Old 09-23-2020, 10:18 AM   #17
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I have used Dicor on some scratches in original caulking on the roof from trees in the Teton^s

Seems to be holding fine

The roof is exposed abut three months per year however

I used alcohol to prepare and clean the area

Tape certainly works well as needed
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Old 09-23-2020, 12:11 PM   #18
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It sure sounds as if carrying a roll of EternaBond on the road for quick repairs makes good sense.
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Old 09-23-2020, 12:25 PM   #19
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It sure sounds as if carrying a roll of EternaBond on the road for quick repairs makes good sense.
I carry a roll of the 4" wide stuff. I figure that width could fix just about any issue like a cracked skylight, tear in the roof, small hole, etc.
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Old 09-23-2020, 12:45 PM   #20
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... And once you get home: you can bring the full arsenal to bear on the issue!
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