BITEC BETA BASE is designed for use in both modified bitumen and conventional BUR roof systems. It can be mechanically attached, hot applied, or applied in approved BITEC ELASTOMERIC ADHESIVES. BETA BASE is produced using oxidized (unmodified bitumen), reinforced with high strength fiberglass mat. Surfacing is either talc or sand. Ply stripes are furnished for ease in alignment and as an aid in application.