Dean tackles the sounds and secrets of your home—starting with a caller hearing a mysterious low-frequency rumble coming from their sliding door. He also helps another homeowner weigh the pros and cons of adding insulation versus upgrading their water heater to fix a chilly house. Then, Dean digs into the buzz about using soybean oil to extend the life of a roof—fact or fiction? Plus, a look at vintage attic designs with no nail holes and how they help protect Spanish tile roofs from moisture.

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