Mappus Land Services

A little background about mold in attics. Mold in attics is primarily caused by improper ventilation. In the northern climates this is often due to heat loss in the winter months when the hot air escaping from the house condenses against the cold boards of the attic, and is sometimes exacerbated by an improperly discharged bathroom fan. In the south it can be caused by an improperly functioning HVAC unit located into the attic letting cold air escape and condense against the hot boards of the attic or by an improperly discharged bathroom fan or dryer vent. In both climates what happens is moisture becomes trapped in the attic areas and accumulates on the boards of the attic sheathing and rafters, where mold starts to grow.