STYROFOAM PERIMATE brand insulation is an ASTM C578 Type IV extruded polystyrene foam board, meeting insulation and drainage requirements in the commercial building foundation market. A patented groove network in the exposed side of the boards efficiently channels water down to the footing drain/weep tile even at high soil pressure (e.g., 1200 psf). This product has been successfully used in Canada and Europe and is now available in the United States as an effective and inexpensively installed combination of foundation insulation and drainage. #07_21_00 #07210 #Class_A #DBS #DOW #Dow_Building_Solutions #DOW_Chemical #drainage #insulation #membrane_protection #Perimate #rigid_insulation #STYROFOAM #Type_2_drainage_product
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