Concrete Flooring Came Out Mottled
Hello - I am hoping someone could offer a suggestion for an issue that came up when I had a concrete floor refinished. I am a designer and asked a crew to remove old laminate tile, clean the concrete floor exposed, do painted designs and then seal the flooring. They did as I asked but the floor came out very mottled. I do want it to have a used, industrial look so some mottling is expected but this seems excessive. I am wondering if perhaps they didn't clean it enough - they said they scraped it, lightly sanded it, and washed it with water. Do you think a good chemical cleaner would have helped? Or should I try a lightly tinted stain to even out the color? My concern with that is how many samples will I have to do to find the one I want and will it translate to more floors I am doing like this? Does any one have a suggestion to keep the mottled look to a minimum without losing the used look? I hope I am not asking too much.