Resistant sheathing materials are specifically designed to protect wood framing from the elements, including moisture, wind, and pests. These materials provide a barrier between the framing and the exterior environment, ensuring the structural integrity and longevity of the building.
* Oriented Strand Board (OSB): OSB is a widely used sheathing material made from wood strands compressed and bonded together with resin. It offers good moisture resistance and structural strength.
* Plywood: Plywood consists of thin layers of wood veneer glued together under pressure. It provides exceptional strength, durability, and moisture resistance.
* Fiberboard: Fiberboard is a lightweight, high-density sheathing material made from wood fibers. It offers excellent moisture and fire resistance.
* Cement Board: Cement board is a non-flammable, moisture-proof sheathing material made from cement, fly ash, and fibers. It is highly durable and can resist rot, mildew, and insects.
* Glass Mat Gypsum Sheathing: Glass mat gypsum sheathing is a moisture-resistant gypsum board reinforced with fiberglass mats. It offers superior moisture resistance and fire resistance.
* Protection from Moisture: Resistant sheathing materials create a moisture barrier that prevents water from penetrating the wood framing, reducing the risk of rot and structural damage.
* Increased Structural Strength: These materials add strength and rigidity to the framing, enhancing the overall stability of the building.
* Protection from Wind: Resistant sheathing materials help withstand high winds by distributing the force evenly across the framing, preventing damage.
* Pest Resistance: Some sheathing materials, such as cement board, are resistant to insects and rodents, protecting the framing from infestation.
* The acceptable moisture level in wood framing varies depending on the species of wood used, but generally should be below 19%.
* Excessive moisture can lead to decay, rot, and loss of structural strength.
* Proper ventilation and moisture control measures are essential to maintain appropriate moisture levels in wood framing.