Cold Climate Construction

2 articles

Close-up of mold growing on dark, damp wooden rafters in a cold-climate attic, illustrating the hidden dangers of improper exhaust fan installation.

Trades

Hidden risks in cold climate in-line exhaust fan installation

Mold grew on the rafters of a cold-climate home, even after the homeowner blocked soffit vents.

Rick Donovan·June 29, 2026

Cross-section of a wall assembly showing warm air leaking, condensing into frost on sheathing, and causing hidden rot in a cold climate.

Materials

Manage Condensation With Smart Wall Assembly Ideas

In cold climates, air leaking outward through a wall accumulates as frost on sheathing, leading to hidden rot and structural damage before any visible mold appears.

Luis Ortega·May 24, 2026