Sika BlackSeal Elastic SKU: 224122 MODEL: 440703 Error. try again later You've successfully joined the club $ 71 .76 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Sika BlackSeal Elastic is a BRANZ appraised polymer, modified water-based bitumen emulsion. Excellent adhesion to concrete and masonry. Features and benefits BRANZ Appraised. Can be mixed with sand and cement to create waterproof screeds and mortars. Simple to apply by brush or roller.