... Raw Materials:MgO, MgCl, Perlite, Fiberglass, non-woven fabrics.Water Absorption:23%, ASTM-C1186.Density:Range from 0.8 to ... Performance:ASTM E330 and AC386.Water Resistance:after 24 hours test, there wasn’ t water percolation or water drop on, the back side. ... cement plastering but is fireproof and resistant to damage from water, humidity, freezing, organisms, chlorine, salt and more. Excellent ...