Cement Board is a type of building board made from a mixture of cement + fibers (often glass or cellulose fibers), and it is used as an alternative to gypsum boards in places that require high resistance to moisture and durability. In simple terms: It is a rigid board similar to gypsum board, but it is stronger and withstands water and heat better. Its advantages: Water and moisture resistant (suitable for bathrooms and kitchens) Strong and durable and withstands impacts Withstands high temperatures Its uses: Exterior panels Walls The difference between it and gypsum board: Cement board: Stronger + water-resistant Gypsum board: Lighter + easier to install, but it is affected by water.