Dec
29
Posted on 29-12-2007
Filed Under (garage) by admin on 29-12-2007
Sue asked:

I am preparing a garage floor for epoxy paint.

There are old grease stains that I cannot remove. I have used a garage floor degreaser, with scrub brushes and a pressure washer. DIYnetwork suggested dishwasher detergent, laundry pre-treater, etc. but I am concerned that putting too many competing chemicals might cause toxic fumes.

After pressure washing, there is a large light brown stain remaining (the oil/ grease had been so thick we actually scraped it away before degreasing).

Is there a way to test the surface to see if the stain still contains oils that would keep the epoxy from sticking?

The garage kit includes an etching chemical, and a two-part paint (pigment and activator).

There are also some shiny black paint stains (drips) that even the pressure washer couldn’t blast off. I actually pitted the concrete attempting it, so more pressure isn’t an option.

Question posted courtesy of: Kim

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Comments

txpyxie on 2 January, 2008 at 10:44 pm #

The paint thinner or scraping off with putty knife as far as testing for oil dont think so but could be wrong.
For oil dont think so but you would still have to scrub it dawn works well on grease but could be wrong.
The paint thinner or scraping off with putty knife as far as testing for oil dont think so but you would still have to scrub it dawn works well on grease there is.


Jack the Toad on 4 January, 2008 at 7:37 am #

acid wash and use H AND C concrete stain


Diane L on 5 January, 2008 at 2:35 pm #

The grease stain and paint.