$62.99 R-Tech 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation-320817 - The Home Depot
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 
