Astm d3273 mold resistance testing in independent lab tests conducted on securock gypsum fiber roof board and securock glass mat roof board at the time of manufacture per astm d3273 standard test method for resistance to growth of mold on the surface of interior coatings in an environmental chamber both panels scored a 10. Securock exoair 430 system. Avoid exposure to moisture from leaks or condensation. 
				
			
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