Description
Nexus ProJoint Contract SBR products are a water-based emulsion of a modified styrene-butadiene polymer, designed to enhance the strength and workability of sand and cement mortar. They can also be used for priming the surface of natural stone, cement slabs, or setts to promote adhesion.
With its non-foaming properties, Nexus ProJoint Contract SBR controls the density of the mortar, resulting in a significant increase in compressive, tensile, and flexural strength.
For peace of mind that your paving will be securely bedded, choose our High Performance or Contract SBR. Both options offer excellent freeze-thaw resistance and enhanced mortar durability.
- Promotes adhesion of natural stone and concrete paving to substrates
- High solids content of over 30%
- Improves the strength and workability of sand and cement mortar
- Excellent freeze-thaw resistance
- Increases water resistance and durability of mortar
ProJoint Contract SBR is ideal for applying directly to the underside of paving substrates to enhance adhesion. However, it’s essential to note that SBR is not suitable as a primer for porcelain paving; instead, ProJoint Porcelain Primer should be used for this purpose. When using this product, ensure you wear protective PVC gloves and eye protection for your safety.
Add the SBR liquid into the cement while mixing?
The addition rate depends on the application – as a guide, a typical addition is 200ml per 1kg of cement.
Please note that this addition will reduce the amount of water required in the mix and also decrease the pot life of the mixed mortar.
IMPORTANT
Always test in a hidden area before use, and only proceed when you are satisfied with the result.
The technical information supplied is based on data obtained by our research and is considered accurate.
However, no liability is accepted for any loss or damage arising directly or indirectly from the use of our products or from the information given in publications.
Prospective users should therefore verify, through appropriate trials, that the product is suitable for its intended use.
Do not discharge waste into drains or rivers.