Jul 28, 2019 · A moisture meter is a device designed to measure the percent of moisture content of various building materials, such as roofing, siding, insulation, drywall, plaster, wood, tile, fiberglass and concrete. Structural and safety hazards, such as mold, rot and decay are all potential consequences of elevated moisture levels in these materials. Relationship between Moisture Content and Mechanical Properties of Gypsum Sheathing ABSTRACT A recent research project examined the relationship between moisture content and mechanical properties of gypsum sheathing (i.e., gypsum panel products intended for use as exterior sheathing on buildings). Jul 13, 2018 · Drywall, like most porous materials, will adsorb and desorb moisture from the air. If you have cool drywall in the house and warm, moist air in the attic, the drywall will adsorb moisture from the air and that will show up as a slight increase in the moisture content of the drywall.

moisture content measurements revealed a water movement pattern similar to paper chromatography. A leading edge of relative high percent moisture content (~ 20%MC) moved upward along the width of the wallboard. The immersed portion of the wallboard maintained a moisture content level ≥ 20%. Jul 14, 2017 · To avoid problems, I use a simple moisture meter to check framing before drywall. I like pin-based meters. The picture above shows the Extech model I use, which works well. My goal is to verify that there is zero lumber with a MC above 19%. This is a hard rule. Finding moisture is the first step in early mold prevention. High levels of moisture that go untreated are the main cause for harmful mold growth in the home. With the MMD4E moisture meter, use the pin sensors to find the moisture content in your wood or drywall.