A premium grade SBR designed to give concrete floors and cement renders abrasion, chemical and water resistance. Bond It SBR also shows improved performance as a key coat adhesive compared to non SBR bonding agents. Uses: For improving a mortar's, render's or floor screed's abrasion and chemical resistance. Providing protection during continued or intermittent water contact suitable for both external or internal use application. Key coat applications to substrates with a low porosity. For repair patching of concrete and cement screeds, to improve adhesion and flexibility of screeds. Application: All surfaces should be free from laitance, oil, grease and standing water. Unsound surfaces should be scabbled down to a solid base material. Key Coat: Mix 1 part Bond It SBR to 2 parts cement by volume and adjust to brushable consistency with water. Mix only enough to use within the hour. Brush thoroughly into a clean dust free substrate, whilst still wet overcoat with the floor or render mix. Damp-proofing: Mix the same formulation as in the key coat and apply the first coat with vigorous brushstrokes. Allow to touch dry then apply a second coat at 90° to the first and allow 48 hours to dry. Apply the third coat at 90° to the second coat and whilst still wet apply the render. Renderings/Mortars: Prepare the substrate with the key coat first for best results. Mix sand/cement mortar/render and add 5-7.5 litres Bond It SBR per 25Kgs cement, reducing the amount of gauging water accordingly. Apply at least 6mm thick. Two coats are recommended.