In a room with wood-paneled walls—particularly if that wood is a veneer—your instinct may be to start fresh, either by tearing out the paneling or by concealing it behind drywall. Both of these ...

Q. I want to restore the walnut paneling in our 90-some-year-old house. In spots, the wood has been lightened by sunlight or marked by pet stains, and there are minor scratches. A wood artisan says ...