By and large, high-pressure SPF applications garner much of the attention in the spray foam industry. However, low-pressure applications have become an increasingly significant part of the market, effectively carving out niches in which high-pressure applications are infeasible. Leading the charge for low-pressure systems are aerosol cans and disposable kits, but in recent years, new innovations have made low-pressure applications fill several important market niches.
The main difference between low-pressure (LP) applications and high-pressure (HP) applications is, of course, their namesake distinctions. For the average HP system employed via a spray rig, material can be sprayed up to 2000 psi. LP systems, on the other hand, spray at roughly one-tenth the pressure, at around 200 psi (or lower, in the case of aerosol foam products). What’s more, LP foam differs from HP foam in its composition, being specifically formulated for spraying at lower pressures. The pressure disparity translates to physical differences in the foams’ spray characteristics, as Touch ‘n Seal’s Michael Sites explained.