$62.99 Blue Board 1 1/2 x 4 x 8' - 7.5R Value - 25PSI in 2020 | Basement insulation, Foam insulation 
Dow R-5 1-in x 2-ft x 8-ft Styrofoam Faced Polystyrene Foam Board Insulation in the Foam Board 
Super TUFF-R 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation-268413 - The Home Depot
