Which statement best describes Gypsum Green board?

• A. Inorganic cement board
• B. Moisture resistant but not water resistant
• C. Fire rated board
• D. Not suitable for any exposure

Answer: (B)

Gypsum Green board is a gypsum wallboard designed to resist humidity in interior environments. Its green color signals moisture resistance, so it fares better in damp areas than standard gypsum board. However, it is not designed to withstand direct water exposure or prolonged wet conditions, so it shouldn’t be used where there will be direct water contact (like showers). That’s why the statement describing it as moisture resistant but not water resistant is the best choice. Cement boards are a different product made from cement and aggregate, used where a more durable, non-gypsum substrate is needed. Fire-rated boards exist, but Gypsum Green board isn’t inherently fire rated. Saying it’s not suitable for any exposure is incorrect because it can tolerate interior humidity environments.