Asmaco Fire Retardant Spray is a single component, moisture-curing and self-expanding aerosol polyurethane foam sealant. Once cured, the foam can be cut, sawn or plastered over after only one hour providing the working temperatures (can and surfaces) are between +5 to +30°C, ideally 20°C.It is designed for easy dispensing through the straw gun included with each can. It has a rating of up to 240 minutes in certain confgurations.
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