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hyunelan2 01-11-2011 08:53 AM

Remove peeling paint?
So, this is a flooring question - but not in the house. It's in my garage. It looks like the previous owner did a DIY "paint the garage floor kit" and probably used it improperly. Since I moved in 1.5 years ago, the floor has been peeling. It's getting worse. There are chips/flecks of paint that get dragged into the house on shoes, the floors of our cars are getting full of them, and it just generally looks super ugly.

What is the best way to remedy this? I'm pretty-sure I can't paint over it, as the new paint will just bond to the old paint and flake off with it. I don't want to pressure wash it all off (A. everything would get soaked + walls are finished; B. It's winter). Would a floor sander type of method work out, or would the concrete just chew up sanding discs?

I am fine with the floor just being concrete - it doesn't HAVE to be repainted, but if it looks bad after removing the old stuff, I'd probably want to put down new paint.

Info: House/Garage was built in 2002, Chicago climate, ~750sqft garage floor.

Floor Doc 01-11-2011 09:22 AM

Have it shot blasted .

hyunelan2 01-11-2011 09:26 AM

Never heard of that process, thanks! I'll have to look around and see if I can find anyone who does that. Any idea if it istypically super-expensive? Can you rent those machines (or is it advisable to do so - or better left to the pros)?

Floor Doc 01-11-2011 09:32 AM

Depends on what your expectations are . i don't see why you couldn't do it if you can find a rental .
If you have a problem finding a rental , or someone , post back . I may know someone in your area .

hyunelan2 01-11-2011 09:40 AM

It looks like Sunbelt rents them for $420/day (or $865/week). It is an 8" electric shot blaster and says it can do 275 sqft/hr. I would assume that means if you know what you are doing. That does not include the dust collector at $97/day (or $290/week). So it's looking like $517 for a day, or $1,155 for a week - plus media. If I could find 2 other people (neighbors, etc) that wanted to go in together for a week, that might be affordable. +$500 to DIY seems a bit much - I guess I need to find a quoted price to compare.

Floor Doc 01-11-2011 09:43 AM

Let me check a few of my flooring tech sites and see if anyone is in your area .
In the meantime you can check it on your end .

hyunelan2 01-11-2011 09:43 AM

Thanks! I'll see what I can find. I'm near Joliet, IL - if that helps.

Floor Doc 01-13-2011 12:03 PM

No Luck finding anyone in your area .
See if you can rent a stand up diamond cup grinder with a dust collection system .
They rent for around $125.00 a day here .

hyunelan2 01-13-2011 12:05 PM

Yeah, I haven't had any luck either. Nobody seems to care about garage floors :(

I'll look into your other suggestion and see what I find. The cost of renting the shot blaster doesn't put it out of the question, but it does make me want to explore other avenues before committing. Thanks again for all your help.

Looks like $97/day for the grinder, and $97/day for the dust collection vac. $194 is much easier to swallow, thus far.

Floor Doc 01-13-2011 12:29 PM

You should be able to knock it out in a day hyunelan.
We use them to grind down high spots in concrete .
Make sure to get one that runs on 120 .

hyunelan2 01-13-2011 12:31 PM

How much risk is there in grinding down too far an marring the surface of the concrete?

Floor Doc 01-13-2011 03:59 PM

Just cut a few ft at a quick pace and check it . the most you should do is remove the slurry cap.

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