How to clean OLD stained concrete floors?
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Janet Pizaro on Oct 18, 2016Because concrete is very porous it is very possible the wrong product was used when painting. The only solution I can think of is possible trying to repaint the concrete with the proper primer and paint.Helpful Reply
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Johnchip on Oct 18, 2016I did not see you say the concrete floor had been painted. But some people answer any and all questions without reading or experience. Most old stains in concrete will not come up. If it has not been sealed you can stain to match, if sealed you can paint or think 'scatter rugs'.Helpful Reply
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Brendon Till on Oct 19, 2016my only experiance is in a carport, oil stains, I used a pressure washer first, then scrubed with dishwashing liquid and pressure washed again. About 80% better than it was. hope this helps.Helpful Reply
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Kathleen Schrader on Oct 19, 2016I would purchase cleaner designed for cleaning concrete garage floors and follow the directions for cleaning the surface. Depending on what the stains are from, some may not come off so you will have to do some sort of painting to cover them. Before painting you need to address the porous areas. Again I would recommend using a sealer for concrete garage floors. As for painting; use a paint specifically for concrete. You can paint the entire floor one color or paint "area rugs" for different spaces. Just be sure to seal the painted surface when you are done painting. Good Luck!Helpful Reply
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Gail Salminen on Oct 19, 2016Consider doing this - very easy but for your large area would be time consuming. http://www.hometalk.com/b/713298/flooringHelpful Reply
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Mary Coakley on Nov 03, 2016I would try Vinegar mixed with baking soda and a good scrubbing brush,unfortunately this is a hand and knees job.I use a cushion to kneel on.Good luckHelpful Reply
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