When Memphis hits one of those quick winter dips, moisture trapped inside siding joints freezes and expands, popping nails and opening seams overnight. Then we swing right back into warmer weather, and that rapid shift makes older panels buckle or chatter against the sheathing. Our loess soil also transfers vibration differently than clay or bedrock, so when the ground softens after a heavy rain, the frame settles just enough to make siding lines shift out of alignment. Strong wind channels off the Mississippi can lift the bottom edges of vinyl panels, especially on homes facing west toward river breezes. In areas with heavy tree cover like Bartlett and Germantown, twigs and seed pods get blown behind siding laps, creating bulges that homeowners don’t notice until the next storm exposes them. We typically source reinforced panels and proper underlayment from local suppliers like Sutherlands and the Poplar Home Depot to get things squared away.