With an R-value of approximately 6.5 per inch, Alpha Polymers' AP210 HFO Closed-Cell Regular Spray Foam Insulation delivers superior thermal insulation, helping to maintain consistent indoor temperatures year-round. The closed-cell nature of the foam also offers added protection against water vapor and helps strengthen structural integrity by adhering tightly to surfaces. Environmentally friendly and highly effective, Alpha Polymers' AP210 HFO Closed-Cell Spray Foam is an excellent choice for energy-conscious property owners looking to improve insulation performance and reduce heating and cooling costs.