Sovereign SBR Bonding Agent For Render, Screed & Repair
Sovereign SBR Bonding Agent
High-Strength Styrene-Butadiene Polymer Additive for Render, Screed & Repair
A milky-white dispersion of carboxylated styrene-butadiene copolymer specially modified for use as a bonding agent and additive. Unlike PVA, it does not re-emulsify, making it ideal for waterproofing, tanking, and external applications. Provides improved adhesion, flexibility, water/salt resistance, and durability in cement-based systems.
Key Benefits
- Superior adhesion to dense or hard-to-bond substrates—concrete, glass, metal, tile & brick
- Enhances strength & flexibility, reducing cracking, shrinkage, dusting; improves frost resistance
- Improved water and salt resistance, supports durable external use and tanking systems
- Non re-emulsifiable—perfect for damp zones, waterproof renders, screeds, and concrete repairs
- Contains antifoam & antioxidant additives to enhance mix stability and longevity
- Boosts carbonation protection, safeguarding embedded steel in repairs; increases abrasion resistance
Product Details
- Form: Milky-white liquid, S.G. approx. 1.01, pH 9–11
- Solids Content: Around 47% polymer
- Pack Size: 5 kg tub (also available in larger quantities)
- Non-combustible & eco-friendly – water-based with no fire hazard
Typical Uses & Mix Ratios
Primer Coat
- SBR Bonding Agent: 1 part
- Water: 5 parts
Apply the primer to porous backgrounds. Render can be applied to either wet or dry primer.
Sealer Coat
- SBR Bonding Agent: 1 part
- Water: 3 parts
Apply to the rear and edges of timber before fitting and tiling to reduce moisture ingress. Do not prime the face to be tiled.
Bonding Coat (Slurry)
- SBR Bonding Agent: 1 part
- Water: 1 part
- OPC (Ordinary Portland Cement): 1½ parts
Apply the bonding coat while still tacky, before applying renders or screeds.
Safety & Handling
- Not classified hazardous, but avoid eye/skin contact; wear gloves, goggles, and suitable clothing
- Can cause mild skin/eye irritation – rinse thoroughly and seek medical advice if necessary
- Non-flammable, store between +5 °C and +35 °C, protect from frost and direct sun
- Eco-aware disposal: Avoid drain contamination; dispose per regulations
Ideal For
- Bonding renders or screeds onto dense, non-porous surfaces
- Durable external renders, floor toppings, screeds
- Concrete repairs (steel protection, carbonation resistance)
- Waterproof/weak substrates—tanking, damp areas, tanking systems
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Sovereign SBR Bonding Agent For Render, Screed & Repair
Sovereign SBR Bonding Agent For Render, Screed & Repair
Sovereign SBR Bonding Agent
High-Strength Styrene-Butadiene Polymer Additive for Render, Screed & Repair
A milky-white dispersion of carboxylated styrene-butadiene copolymer specially modified for use as a bonding agent and additive. Unlike PVA, it does not re-emulsify, making it ideal for waterproofing, tanking, and external applications. Provides improved adhesion, flexibility, water/salt resistance, and durability in cement-based systems.
Key Benefits
- Superior adhesion to dense or hard-to-bond substrates—concrete, glass, metal, tile & brick
- Enhances strength & flexibility, reducing cracking, shrinkage, dusting; improves frost resistance
- Improved water and salt resistance, supports durable external use and tanking systems
- Non re-emulsifiable—perfect for damp zones, waterproof renders, screeds, and concrete repairs
- Contains antifoam & antioxidant additives to enhance mix stability and longevity
- Boosts carbonation protection, safeguarding embedded steel in repairs; increases abrasion resistance
Product Details
- Form: Milky-white liquid, S.G. approx. 1.01, pH 9–11
- Solids Content: Around 47% polymer
- Pack Size: 5 kg tub (also available in larger quantities)
- Non-combustible & eco-friendly – water-based with no fire hazard
Typical Uses & Mix Ratios
Primer Coat
- SBR Bonding Agent: 1 part
- Water: 5 parts
Apply the primer to porous backgrounds. Render can be applied to either wet or dry primer.
Sealer Coat
- SBR Bonding Agent: 1 part
- Water: 3 parts
Apply to the rear and edges of timber before fitting and tiling to reduce moisture ingress. Do not prime the face to be tiled.
Bonding Coat (Slurry)
- SBR Bonding Agent: 1 part
- Water: 1 part
- OPC (Ordinary Portland Cement): 1½ parts
Apply the bonding coat while still tacky, before applying renders or screeds.
Safety & Handling
- Not classified hazardous, but avoid eye/skin contact; wear gloves, goggles, and suitable clothing
- Can cause mild skin/eye irritation – rinse thoroughly and seek medical advice if necessary
- Non-flammable, store between +5 °C and +35 °C, protect from frost and direct sun
- Eco-aware disposal: Avoid drain contamination; dispose per regulations
Ideal For
- Bonding renders or screeds onto dense, non-porous surfaces
- Durable external renders, floor toppings, screeds
- Concrete repairs (steel protection, carbonation resistance)
- Waterproof/weak substrates—tanking, damp areas, tanking systems
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Sovereign SBR Bonding Agent
High-Strength Styrene-Butadiene Polymer Additive for Render, Screed & Repair
A milky-white dispersion of carboxylated styrene-butadiene copolymer specially modified for use as a bonding agent and additive. Unlike PVA, it does not re-emulsify, making it ideal for waterproofing, tanking, and external applications. Provides improved adhesion, flexibility, water/salt resistance, and durability in cement-based systems.
Key Benefits
- Superior adhesion to dense or hard-to-bond substrates—concrete, glass, metal, tile & brick
- Enhances strength & flexibility, reducing cracking, shrinkage, dusting; improves frost resistance
- Improved water and salt resistance, supports durable external use and tanking systems
- Non re-emulsifiable—perfect for damp zones, waterproof renders, screeds, and concrete repairs
- Contains antifoam & antioxidant additives to enhance mix stability and longevity
- Boosts carbonation protection, safeguarding embedded steel in repairs; increases abrasion resistance
Product Details
- Form: Milky-white liquid, S.G. approx. 1.01, pH 9–11
- Solids Content: Around 47% polymer
- Pack Size: 5 kg tub (also available in larger quantities)
- Non-combustible & eco-friendly – water-based with no fire hazard
Typical Uses & Mix Ratios
Primer Coat
- SBR Bonding Agent: 1 part
- Water: 5 parts
Apply the primer to porous backgrounds. Render can be applied to either wet or dry primer.
Sealer Coat
- SBR Bonding Agent: 1 part
- Water: 3 parts
Apply to the rear and edges of timber before fitting and tiling to reduce moisture ingress. Do not prime the face to be tiled.
Bonding Coat (Slurry)
- SBR Bonding Agent: 1 part
- Water: 1 part
- OPC (Ordinary Portland Cement): 1½ parts
Apply the bonding coat while still tacky, before applying renders or screeds.
Safety & Handling
- Not classified hazardous, but avoid eye/skin contact; wear gloves, goggles, and suitable clothing
- Can cause mild skin/eye irritation – rinse thoroughly and seek medical advice if necessary
- Non-flammable, store between +5 °C and +35 °C, protect from frost and direct sun
- Eco-aware disposal: Avoid drain contamination; dispose per regulations
Ideal For
- Bonding renders or screeds onto dense, non-porous surfaces
- Durable external renders, floor toppings, screeds
- Concrete repairs (steel protection, carbonation resistance)
- Waterproof/weak substrates—tanking, damp areas, tanking systems




















