Cementone SBR Admixture White 5Ltr (91566)

The Bostik Cementone SBR product is primarily used as an admixture where it is added to the gauging water of cement based render or sand cement screed mixes where it will waterproof and strengthen the resulting cured material. It can also be used to create a bonding slurry where it is mixed with OPC cement to act as a bonding aid for bonding cement based renders to porous substrates such as brickwork or concrete blockwork, or for bonding a sand cement screed to an existing sand cement screed. However it is not a product that can be used as an adhesive to fix sandstone slabs to existing mortar.

Cementone SBR is a specially modified Styrene Butadiene Co-polymer Latex for cement and mortar. It toughens, waterproofs and improves chemical and abrasion resistance of renders, screeds and mortar. Bostik SBR is an excellent all round primer and bonding agent especially suitable for external applications. Bostik SBR can be used for waterproof rendering, flooring screeds and toppings and for bonding renders & suction control. I am unable to comment on the technical specifications for Mapei Latex Pro.

The Cementone SBR is a product that can be used as an admixture for suitable cement based mixes such as for rendering and sand cement screeds mixes where it will waterproof and strengthen the resulting cured material. It can also be used to create a bonding slurry where it is mixed directly with a suitable cement and applied to a pre wetted substrate to act as a bonding aid prior to applying a sand cement mix. The product is designed and intended for either OPC Cement CEM 1 or CEM 2 / B-V Portland-fly ash cement, and the ratios given for the product are based on these cements. The product could also potentially be used with CEM 2 / A-LL Portland limestone cement, however if using this type of cement, some small test mixes will need to be done to ascertain an optimum mix ratio as this may vary from the ratios given for CEM 1 and CEM 2 / B-V Portland - fly ash cements.

Surfaces need be completely dry before you can apply SBR. Once the wall has dried, you can apply diluted SBR to the wall, allow the product to dry before over coating with a plaster/render.

Cementone SBR is a specially modified Styrene Butadiene Co-polymer Latex for cement and mortar. It toughens, waterproofs and improves chemical and abrasion resistance of renders, screeds and mortar. Bostik SBR is an excellent all round primer and bonding agent especially suitable for external applications. Bostik SBR can be used for waterproof rendering, flooring screeds and toppings and for bonding renders & suction control.