I painted over 30-year-old 12 x 12 tile, applied with adhesive over concrete. Any marbling techniques I have found are difficult. Doing a large floor would be too hard to tackle with my arthritis and fibromyalgia. It took me 10 years to figure out this marbling method. It is easy and quick. A lot of work, but not difficult. The results are phenomenal and really wear well. Since I completed this job some time ago, I will show you demonstration pictures on hardboard.
Zinsser Alkyd Enamel - for base coat (tinted tan)
Cream acrylic paint
White acrylic paint
Dark Brown acrylic paint
Masking tape – I used ¼ inch tape that I purchase from a Quilting website.
Contact paper for masking designs.
Torn pieces of copy paper
Plastic grocery bags
Polyurethane for flooring
Cost: I did a huge 20 x 21 foot area. It cost me about $200 to $250 in supplies. New flooring would have cost me 10 times that amount. I hate to buy what I can make or do.
Step 1: Painting Stages on actual floor.
1. First, clean floor well before painting, remove wax. I used the Zinsser Alkyd enamel because the floor is a high-traffic area. Paint the entire area. The Zinsser is indestructible. I had it tinted the color I wanted for grout lines. Let the paint cure for several days. If you are painting a floor, counter top, or anything with a gloss, your should use a product like Zinszer. If you are painting something other than a floor that will not get wear and tear, you can just use an acrylic paint. Mask the grout lines. Use the contact paper to mask alternate color small tiles. Include the grout lines in your measurement. Any design is possible, use your imagination. Unfortunately, I decoupaged the little square tiles, printed from my computer, on my floor, they do not wear all that well.