The Column Boxboard product is used as an isolation material between the structural column and the masonry wall construction.  This separation is necessary to prevent the masonry from coming in contact with the displaced column during loading and to prevent mortar from being within the same joint. This product is a cellulose material coated on the weathering side and can be factory scored or scored in the field for bending or breaking to fit any column shape. The thickness of the roll product is 1/4", while the sheet product is available at either 1/4" or 1/2" thicknesses.The Column Boxboard material is installed prior to the erection of the masonry wall to assure isolation between the structural column and the masonry wall construction.