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Old 02-17-2014, 01:18 PM   #1
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Roughing up smooth conrete


I put down a garage door rubber sealer on my concrete so that rain wouldn't leak in. It started coming up in about 3 weeks because the concrete is so smooth. The other garage door has rough concrete and it is fine. What is the easiest way to rough up about a 6 inch wide by 16 foot long section of concrete?

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Old 02-17-2014, 01:27 PM   #2
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Roughing up smooth conrete


Smooth concrete does not create a water problem.
Lack of a proper 1" step at the threshold or improper grading inside or out is the real issue.
Rough surface just feels less slippery.
May be able to rent a concrete grinder to rough it up.
Any commercial rental place should have one.

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Old 02-17-2014, 01:33 PM   #3
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Roughing up smooth conrete


Can I just do it with a sander or angle grinder?
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Old 02-17-2014, 02:24 PM   #4
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Roughing up smooth conrete


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Can I just do it with a sander or angle grinder?
Ayuh,... A grinder will do it,...
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Old 02-17-2014, 06:29 PM   #5
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Roughing up smooth conrete


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Ayuh,... A grinder will do it,...

Any special grit or wheel I should use?
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Old 02-18-2014, 08:34 AM   #6
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Roughing up smooth conrete


Ayuh,.... I'd probably just use the carborundum disk that's on my grinder now,...

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