Dow Styrofoam is the staple of our rigid board insulation line up, which includes extruded polystyrene, foil faced polyisocyanurate and expanded polystyrene.
Rigid Board Insulation
Rigid Board Insulation
Extruded Polystyrene
We sell Dow Styrofoam products, the recognized leader in extruded insulation boards. We stock many different sizes and densities. If it’s something we don’t stock, we can get it in quickly. 
Foil-Faced Polyisocyanurate
Sterling stocks, in various thickness, Dow Tuff-R, Thermax and Energy Shield by Atlas. Polyisocyanurate boasts an R-Value of 6.5 per inch, the highest per inch of any insulation board. 
