Firestone Building Products (“Firestone”) has recently released a new formulation of polyiso, which is the best performing insulation in cold temperatures. Firestone’s new formula offers the same high-performing insulating capabilities with even more added benefits. It’s equipped with the highest R-value per-inch in low temperature performance.

At low temperatures (40 degrees Fahrenheit) competing polyiso boards may require additional thickness to achieve the same R-value of Firestone’s polyiso. It not only delivers significant cost savings for building owners, but it won’t soften or melt when exposed to extreme weather conditions.