Bathroom renovations, done well, can drive up house value. Tom and Leslie provide guidance. Also learn how to work with an appraiser that might be hired to evaluate your home for potential buyer. And get ratings on the best air conditioners from the experts at Consumer Reports. Plus get answers to your home improvement questions about stopping tree roots from breaking up walkways, deciding between different types of insulation, remodeling of an old farmhouse, repairing a dining room table, cleaning mold from a roof, repairing cracks in a garage door, identifying the pros and cons of a tankless water heater, fixing running toilets and insulating a garage.