What’s The Difference Between Standard Drywall, Moisture-resistant, And Fire-rated Drywall?
When planning a drywall project in your area,, knowing the differences between standard drywall, moisture-resistant panels, and fire-rated boards helps you budget wisely, meet code, and avoid premature repairs. Each product solves a specific problem—everyday living areas, humid rooms, or fire-separation requirements. Choosing correctly impacts appearance, durability, and safety for years to come. Understanding where each board belongs ensures a smooth inspection process and a finish that stands up to daily use.
Standard vs. Moisture-Resistant vs. Fire-Rated Drywall: What Sets Them Apart
Standard drywall (often 1/2-inch) is the cost-efficient choice for most interior walls and ceilings in dry spaces. It offers a smooth finish and is quick to install, making it ideal for living rooms, bedrooms, and hallways. Moisture-resistant drywall (“green board”) uses water-repellent facings and a treated core to slow humidity absorption, making it suitable for bathrooms (outside direct splash zones), laundry rooms, and conditioned basements. Industry standards such as ASTM C1396 govern performance and labeling, so you know you’re getting the right board for the job. For shower walls or continuous wet areas, cement board or glass-mat backers are recommended instead of paper-faced drywall to prevent softening or mold issues.
Fire-rated drywall (Type X) incorporates glass fibers and denser cores to resist heat, commonly in 5/8-inch thickness as part of rated wall or ceiling assemblies. When installed per tested designs (e.g., ASTM E119 assemblies), 5/8-inch Type X can contribute to a 1-hour fire rating frequently required between an attached garage and living spaces or along common walls in multifamily buildings. It’s heavier and stiffer—about 2.2 lb/ft² for 5/8-inch Type X versus roughly 1.6 lb/ft² for 1/2-inch standard panels—yet offers improved sag resistance and sound control in many assemblies. Some projects combine features using mold- and moisture-resistant Type X or glass-mat products in high-moisture, code-driven areas. Local codes in your area, and the International Building/Residential Codes determine exactly where fire-rated or specialty boards are required.
Ready To Start Your Drywall Project? Get the right board for every room—standard for dry areas, moisture-resistant for humid rooms, and Type X for code-required fire separations—installed to tested standards for a durable, beautiful finish. Submit the contact form to request service from a local professional in your area, .