Q. I had my hardwood floors refinished with polyurethane about six years ago. They still look lovely, but are worn dull in high-traffic areas. Can I just apply more coats of polyurethane? A.

There are many good products for interior woodwork, but we like the price of Minwax One-Coat Polyurethane. It comes in quart cans and in three sheens: full-gloss, satin and semi-gloss. Milky in the ...