FOAM-LOK™ 2000-4G is a Closed-Cell spray applied FOAM, which was developed using an EPA approved 4th generation blowing agent which when installed following application guidelines adheres tenaciously to framing members and substrates. FOAM-LOK™ 2000-4G Closed-Cell spray FOAM provides superior energy economy and durability while significantly reducing unmanaged moisture and air infiltration. As a component of a "systems approach" to proper building envelope construction, FOAM-LOK™ 2000-4G Closed-Cell spray FOAM provides exceptional performance in minimizing heat transfer, moisture gain, air leakage, and improving racking strength.