What Is an MMR Gypsum Board? Where Would You Specify

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The Answer is An MMR gypsum board is a type of gypsum panel that is designed to be moisture and mold resistant. The acronym MMR stands for "Moisture and Mold Resistant." These boards are manufactured with special water-resistant core and facers that inhibit the growth of mold and mildew, making them suitable for use in areas with high humidity or where exposure to moisture is a concern.

MMR gypsum boards are typically specified for use in areas of buildings where moisture levels are expected to be higher than normal, such as in bathrooms, kitchens, laundry rooms, and basements. They can also be used in commercial settings like hospitals, schools, and restaurants, where maintaining a mold-free environment is critical for health and safety reasons.

When specifying MMR gypsum boards, it is important to consider the specific requirements of the project. For example, in areas that will be subject to direct water exposure, such as shower walls or areas above sinks, a more specialized type of moisture-resistant board, such as cement board or a fiberglass mat gypsum panel, may be more appropriate.

In summary, MMR gypsum boards are specified in construction projects where enhanced moisture and mold resistance are needed to ensure the longevity of the wall or ceiling assemblies and to maintain a healthy indoor environment.

What Is an MMR Gypsum Board? Where Would You Specify

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