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Registered
Join Date: Jun 2003
Location: Fresno, CA
Posts: 7,769
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New Question on Floor Prep for Epoxy
Got a question on Floor Prep - before Epoxy
Painting took longer than expected so I haven't got any of my floor prep started. Now the weekend is here and I was planning on renting a cement resurfacer. Question: does it matter "when" I surface the cement. I.e., I haven't degreased yet, can I do this after the resurfacing or should I degrease first. I want to take advantage of the weekend to resurface the concrete so I'm hoping I can do this tomorrow and then spend next week degreasing, pressurewashing, etc.. |
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09-22-2017, 07:28 AM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,771
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Degrease first, lest you redistribute all the grease while grinding the surface.
After you finish all your prep, take a 1 foot square of poly and tape it down with duct tape... leave overnight.... if the next day there is moisture trapped under the poly, rethink the coating you want to apply... sealer or stain might be better than epoxy, if there is a lot of moisture..
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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09-22-2017, 01:46 PM
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Fleabit peanut monkey
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Quote:
Beat the shiet out of the floor. Get it down to a nub. Powerwash like a fiend.
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1981 911SC Targa |
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09-22-2017, 02:30 PM
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Registered
Join Date: Apr 2007
Location: wisconsin
Posts: 2,553
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Don't do it...
I did, and 2-3 years started peeling off... Good luck fixing it... If ANY water gets in behind it, from condensation or rain, etc, it will not stick... |
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09-22-2017, 03:45 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,771
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Quote:
Surface prep is key for the success of any coating system... cleaning and degreasing are first.. often followed by chloride remediation (if on steel surfaces) then surface prep by creating a profile.. Those pesky organizations that set standard for paints and coatings are where the procedures come from.... NACE... SSPC... ASTM... Oh and wow... here is a guide from the manufacturer of one of the epoxy floor coatings... Epoxy Coat Installation Instructions Step 1: Clean and Sweep Step 2: Degrease... Or you could just smear that grease and oil around and have the coating come up...
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Don't feed the trolls. Don't quote the trolls http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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09-22-2017, 03:58 PM
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Registered
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I gotta agree with TimT on this one
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Jacksonville. Florida https://www.flickr.com/photos/ury914/ |
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09-22-2017, 04:41 PM
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Brew Master
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Clean and degrease first. Then grind the floor.
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09-23-2017, 02:17 AM
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Registered
Join Date: Apr 2005
Location: outta here
Posts: 53,123
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Clean and degrease it first, then shot blast it.
But, we covered that in your other thread... Someone also mentioned testing for water migration through the slab. That should've been done long before you decided to put epoxy down on the floor. |
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09-23-2017, 03:30 AM
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Registered Abuser
Join Date: Jul 2007
Location: Southwest Montana
Posts: 2,738
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Just had one done by the pros they cleaned degreased. Ground -fillled cracks re ground. Epoxyed then put a poly urethane UV coating on top. Lots of grinding.
I would try it but the grinding is the key. This guy used some specialized grinder with a big vac I have no idea where you could rent one. I have seen a lot of hanger floors done with success and failure. The grind gives the profile that the epoxy can grip. Any oil or dirt the epoxy will lift.  
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MT 930 1987 930 - Gone but not forgotten A man with priorities so far out of whack doesn't deserve such a fine automobile. I would rather wake up in the middle of nowhere than in any city on earth - Steve McQueen американский |
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10-01-2017, 07:56 PM
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1981 Porsche 911 SC Targa
1973 Porsche 914 1.7 very modifed
1985 Porsche 911 Cab
