"Alcor is a bitumen coated fully annealed 99% pure aluminium core dampcourse. The aluminium core is coated with bitumen on both sides and edges to prevent lateral corrosion. It is used as a dampcourse in brickwork and blockwork and is impervious to moisture, providing a protective barrier against rising damp. Alcor is not affected by lime and cement. It is easily dressed and formed and has great shape retention. Alcor is available in standard grade (.3mm) and super grade (.45mm)"