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Old 10-25-2007, 09:06 PM   #1
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Another question about roof sealant products


Another post mentioned silicone and urethane sealing products for the roof. Personally I use silicone for most things, but I was pointed towards roofing cement, a Henry's 208R product. But that stuff looked dense and heavy to work with, so I used Henry's 209 elastomastic, a rubberized asphaltic sealing compound, since it came in a tube and was easier to handle.

In the future, what product do you guys think would be best? I have a couple of old roofs, some flat, some petroleum based tile.

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Old 10-26-2007, 04:55 PM   #2
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Another question about roof sealant products


COunterflashing is easier to seal with a tube. I can't think of any other place on a roof to use sealants.

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Old 10-26-2007, 10:44 PM   #3
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Another question about roof sealant products


I like the Henry Elastomastic,very nice stuff,great for sbs and asphalt applications,it`s recommended for the seams on Certainteed`s Flintlastic SA SBS CAP SHEET
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Old 10-27-2007, 07:37 AM   #4
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Another question about roof sealant products


Hey God. Are you talking about the hidden, 45'd lap seams? Haven't used that roof material yet.
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Old 10-27-2007, 09:17 AM   #5
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Another question about roof sealant products


basically for endlaps(yes),and to seal against the metal gravelstop(sides)
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Old 10-28-2007, 06:49 PM   #6
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Another question about roof sealant products


Quote:
Originally Posted by the roofing god View Post
basically for endlaps(yes),and to seal against the metal gravelstop(sides)
Thanks. I wasn't thinking about the cover material. On my last job, I/m trying to see how well the PolyGlass really seals. After I installed the last piece of metal hooking into the B.I.G., I installed the roof and just sealed to it, and overhung into and sealed ( Hopefully), to the B.I.G.

I hate sealing flush to the gravel, or any other stop, so I overhand an inch or 3, heat the material to soften it, and get it to hang over. it then 'sets' in that position pretty good.
I've been doing it that way for about 7 years. I go to the jobs every year to see how they're doing. No leaks, no uplifts, and if the seal did break, nobody knows because it's leak-proof.
These are all APP and SBS. I install the edging, the metal, then the roof, no cover with a waterbucking lap.
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Old 10-28-2007, 06:56 PM   #7
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Another question about roof sealant products


the sbs is rolled into place w/the elastomer at the juncture w/the gravelstop,it stays flexible so theres no pulling away--app different procedure
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Old 10-28-2007, 07:07 PM   #8
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Another question about roof sealant products


You're right, and I oversimplified. I think we're on the same page though.

Been a long weekend and I might fall asleep as I type this. Went to the reosrt and stayed up late again.
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Old 10-28-2007, 08:15 PM   #9
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Another question about roof sealant products


sounds like a worthwhile deal
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Old 10-28-2007, 09:24 PM   #10
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Another question about roof sealant products


Tinner ,the elastomastic is just about the same as karnak ultra(rubberized)

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