How to Handle Spray Foam Insulation Barrel Sets

Two component spray foam systems, for sprayed in place or spray on polyurethane foam insulation blends, are primarily packaged in steel 55 gallon barrels and distributed by their weight in volume as a paired set. A Paired Set is two barrels consisting of one “A” side (Activator/Isocyanate) and one “R” side (Resin/Polyol) ranging in a combined liquid weight from 970 lbs. to 1050 lbs. It should be noted that in many instances the components are referred to as “A” and “B”, respectively. In general the spray foam systems are produced having at minimum six months shelf-life within the original unopened barrel. Stored between 60 and 75 degree F (15 – 24C), do not require additives, B sides may require mixing and/or continual agitation.

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