One-component polyurethane foam is dispensed from a pressurised can and expands as it cures. It is used for filling, fixing and insulating around openings and service penetrations where the selected product's application limits are suitable.
Foams may be dispensed through an attached straw or a separate foam gun. Gun-grade products allow more controlled dispensing; cleaners and applicator guns are listed separately. Yield, fire classification, cell structure, curing and suitability vary by product and conditions.