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Old 01-30-2016, 01:23 PM   #1
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What is this material on my roof?

I have this black material on all four corners of my roof. It is somewhat soft and pliable but is starting to crack, so I need to seal it before I have water damage. Does anyone know what it is or what I can use to seal it up?
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Old 01-30-2016, 01:29 PM   #2
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I have no idea what it is but it looks like roofing tar that has been applied by someone with no idea what they were doing.
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Old 01-30-2016, 01:37 PM   #3
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I have no idea what it is but it looks like roofing tar that has been applied by someone with no idea what they were doing.
Yes, it reminds me of Black Jack roofing tar. It came this way from the factory.
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Old 01-30-2016, 01:45 PM   #4
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Once you find out what it is and how to remove it replace it with some Dicor self leveling lap sealant.

You should be able to pick that up at any RV parts seller, Home Depot or Lowes may sell it in your area.
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Old 01-30-2016, 01:57 PM   #5
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It looks like it is black epdm lap sealant to me. Or polyurethane sealant, maybe even geocell proflex. Blackjack or roof cement would not still be pliable.
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Old 01-30-2016, 09:33 PM   #6
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Looks to me like automotive butyl type sealant. Very sticky and stays playable.


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Old 01-31-2016, 01:14 PM   #7
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Looks to me like automotive butyl type sealant. Very sticky and stays playable.


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Could I seal over it with Butyl Rubber Sealant? I can get that here locally and it comes in a standard tube like most caulks. I want to make sure what I use will adhere to it. I tried silicone caulk but it did not want to stick to it.
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Old 01-31-2016, 01:19 PM   #8
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The factory would send it out like that????
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Old 01-31-2016, 01:35 PM   #9
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The factory would send it out like that????
It didn't look this bad 2 years ago when it was new, but yes, this black putty was used on all 4 corners. Picture did not post correctly, it should be rotated 90 degrees clockwise.
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Old 01-31-2016, 01:54 PM   #10
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If this is from the factory, the first thing I would do is ask the manufacturer what the h___ were you thinking?
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