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Gypsum Board & CeilingsPrefab & Dry Construction
Gypsum board: types under EN 520, moisture- and fire-resistant boards, and when they aren't enough
Gypsum board is not one product. The European standard EN 520 defines lettered types (A, H, F, I, R…) each with its own use. And the common mistake: the 'green' board is moisture-resistant but not waterproof.
Cement board and fibre-cement: when to use them instead of gypsum board, and are they waterproof?
Cement board is a cement-based panel used as a tile backer in bathrooms and showers and for external cladding. The ASTM C1325 and C1288 standards, how it differs from gypsum board, and why it needs a waterproofing membrane over it in showers.