Because T-111 is structural (often used without sheathing), rot can spread into wall studs, insulation, and framing before you see a single brown spot on the exterior. A seemingly solid panel may be held in place only by paint film.
: Temperature swings and moisture cycles cause the wood to expand and contract. If not installed with proper expansion gaps, panels will bow outward or buckle. t-111 siding problems
: The "end grain" at the bottom of the panels acts like a straw, wicking moisture upward. This leads to soft spots, discoloration, and structural decay, especially if installed too close to the ground. Because T-111 is structural (often used without sheathing),
Here’s an interesting, practical take on — written as a cautionary field guide for homeowners and builders. rot can spread into wall studs