Posted on December 16, 2013 by Scott Gibson
in Q&A Spotlight
Brian Lent has discovered something in his walls that no homeowner wants to see: mold.
Preparing a ground-floor room for drywall, Lent pulls some fiberglass batt insulationInsulation, usually of fiberglass or mineral wool and often faced with paper, typically installed between studs in walls and between joists in ceiling cavities. Correct installation is crucial to performance.
from a 2x6 stud cavity and notices the back side of the OSB sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen.
is damp. A moisture meter reveals that in 80% of the bay, the moisture content is 66% or higher. Moisture and mold are heaviest at the bottom of each bay.