OSI® QUAD® FOAM offers superior protection from the elements. Its high ratio of closed-cell structures provides the ideal barrier to air and moisture while delivering optimal insulation performance. The product’s combination of strength and flexibility also allows it to withstand years of seasonal expansion and contraction. OSI QUAD FOAM is a high-yield, quick-setting formula available in both straw and gun-grade cans. It works in all regions of the country during both the high temperatures of summer and the extreme lows of winter.