Firewise Mastic is a halogen free, polymer emulsion based sealant that
swells when subjected to temperatures in excess of 125ºC and forms a char coat that restricts the passage of smoke and fire. It is easily applied and dries to a flexible and Smooth surfaced material which is readily
over paintable. It has excellent adhesion to a wide range of substrates and will not harden or crack with age.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Firewise Supplies is consulted before specifying.
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