REALISTIC WOOD FLOOR TREATMENT
Another technique I have used for wood floors is to paint enough 1/4" plywood to cover the set with 3 or four washes (1 wash per sheet) of varying darkness of the color wood you want. Spatter the ply lightly with a black wash then varnish the full sheets. I like Diamond Gloss Varathane - Satin Finish. The plywood is then ripped into strips at the desired width, cut into random lengths and bradded down to the stage floor. What sells this technique are the different colors, the sharp lines of the floorboards, and the random lengths. An exaggerated look can be achieved by separating the boards about 1/8" on all sides.