Featuring Our Industry-Leading “Zero Thermal Drift” Guarantee:

The use of air as an insulating gas allows graphite polystyrene (GPS) to maintain its outstanding R-value performance over time and contributes to sustainable building practices. The air, graphite and polymer matrix in GPS are all stable and no fluorocarbons are used to make, or are contained within, GPS. Thus the R-value of Halo’s GPS core will not deteriorate. GPS has zero thermal drift and zero ozone depletion potential.

Unlike XPS and ISO insulation, with R-values that deteriorate over time, Halo features a unique “closed cell”structure that delivers a permanent R-value.