Description
- 100% Waterproof & Damp-Proof: Unlike standard PVA which softens and breaks down when wet, this SBR formula becomes completely water-resistant once cured. It is ideal for high-humidity areas, damp-proofing applications, external walls, and any substrate subject to continuous moisture or water contact.
- Total Coverage Control (High-Visibility Pink Tint): Standard clear primers make it nearly impossible to judge coverage, but our bright pink pigment provides an instant visual blueprint of your work. At a glance, a plasterer can easily spot unprimed dry spots, thin patches, or over-applied pools, ensuring a perfectly uniform, high-tack bond layer before applying the topcoat.
- Maximum Adhesion & Workability: Dramatically improves the "grab" and wet adhesion of plaster and mortar mixes, making vertical and overhead applications incredibly easy. It delivers a smooth, creamy consistency that enhances trowelability while extending working time for a flawless, professional finish.
- Anti-Crack & Anti-Shrink Flexibility: Significantly enhances the natural elasticity of cement and plaster mixes. By allowing the cured material to easily accommodate thermal expansion and minor structural movement, it actively prevents drying shrinkage and surface map-cracking.
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Heavy-Duty Plaster & Plasterer Reinforcement: Formulated specifically to boost the overall structural durability, tensile strength, and impact resistance of backing coats and finishing plasters. It gives plasterers maximum control over tough, high-suction backgrounds—permanently eliminating surface powdering and ensuring a long-lasting finish in high-traffic areas.
SBR Bonding Agent & Admixture
An interior/exterior bonding and waterproofing aid, sealer, and primer. Designed to improve water, chemical, and abrasion resistance, as well as flexibility, plasticity, and durability. Ideal for strengthening renders, floor screeds, concrete, and patching mortars. Unlike PVA, SBR is suitable for use in areas subject to dampness, high humidity, and continuous water contact.
Key Benefits
Enhanced Durability: Improves water, chemical, and abrasion resistance. Better Workability: Improves flexibility, plasticity, and wet adhesion while reducing shrinkage, cracking, and surface dusting. Moisture Resistant: Perfect for environments subject to high humidity, dampness, and continuous water contact.
Application & Mixing Guide
Bonding Slurry (for screeds, toppings, renders, and coatings) Mix 1–2 parts by volume of fresh cement with 1 part by volume of SBR. Apply evenly to the surface, and apply the screed, topping, render, or coating while the slurry is still wet or tacky.
Additive for Render
Prime the surface first. Use 5–7 liters of SBR, 75kg of sharp washed sand, and 25kg of cement. Apply the first render mix to a minimum thickness of 7mm. Scratch the surface and leave to set before applying a second coat of similar thickness.
Admixture (for floor toppings and screeds)
Add 5–7 liters of SBR per 25kg of cement. Apply the topping or screed to a minimum thickness of 12mm.
Water Resistant Primer
Dilute 1 part SBR with 3 parts water and apply directly to the surface.
Storage & Limitations
Limitations: Not suitable for use with coloured exterior decorative renders. Do not over-mix. Dispose of product and packaging correctly.
Shelf Life: 12 months from the date of manufacture.
Storage Conditions: Store in cool, dry conditions (between 5°C and 25°C) away from direct sunlight. Protect from frost.
Health & Safety
Low hazard product, safe in normal use. If product enters the eyes, rinse immediately with cold water and seek medical attention if irritation persists. Contains BIT, CIT, and MIT. May produce an allergic reaction.