Why Moisture Resistant Drywall Replacement Is Used in Areas Exposed to Humidity and Water

Interior wall construction relies heavily on standard gypsum board due to its affordability, ease of installation, and smooth finish. However, traditional drywall possesses an inherent vulnerability: its core consists of a highly porous gypsum plaster pressed between two sheets of heavy paper. When exposed to persistent humidity, steam, or direct splashes, this paper backing acts like a sponge, drawing water deep into the core.
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