Why Venting a Bathroom Fan Into the Attic Creates Bigger Problems

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Blowing bathroom exhaust into the attic might seem like a quick fix, but it actually pumps warm, moist air directly into your insulation and wood rafters. That trapped humidity can rot structural beams, ruin your insulation's R-value, and spawn mold colonies you won't see until the ceiling stains appear. You're basically turning your attic into a damp sponge that compromises your home's integrity from the top down.