Do you hear funny rattling noises coming from cabinets, shelves and closets as you walk past? Your house is not haunted, and there probably isn't an earthquake nearby. Chances are it's just your floor flexing -- a common problem, especially during warm months when water evaporates from the soil under and around your home. The solution is between the wood posts and beams that support your floor. Jack the beam up about 3/8 of an inch, open the gap between the post and the beam with a chisel and drive in a pair of shingles opposing each other to a thickness of about a quarter inch. Release the jack. You have just raised your floor an eighth of an inch. No slack -- rattles gone. And that's the On The House tip for today.