It's an all calls weekend!  Dean tackles listener questions about 'banging' in pipes after a new water heater has been installed, replacing front doors in an older home when a contractor wants to replace it with something cheap and easy, whether or not you should shellack old oak floors, building a firepit in the backyard, whether you can put windows with different color frames in the same home, and whether wood countertops are a real viable option in a kitchen.