Sika Sikabond SBR + 5L White

Sika Sikabond SBR+ 5L is a high-performance, one-component, water-based styrene butadiene rubber (SBR) emulsion designed to enhance the physical properties of cementitious mixes. Specifically formulated to improve adhesion, workability, and waterproofing characteristics, Sikabond SBR+ is suitable for a broad range of construction, repair, and renovation applications. Whether used as a bonding agent or mortar admixture, it significantly increases the durability, flexibility, and water resistance of cement-based materials.

Suitable for both professional contractors and DIY users, Sikabond SBR+ is an essential component in high-performance screeds, renders, bonding slurries, and repair mortars.

Key Features and Benefits

• Enhanced Bond Strength: Improves the adhesion between new and existing concrete, render, and masonry substrates.
• Increased Flexibility and Durability: Reduces the risk of cracking and shrinkage by improving the mechanical properties of mortars and screeds.
• Improved Waterproofing: Provides enhanced resistance to water ingress when used in renders, floor toppings, and repair mortars.
• Excellent Workability: Facilitates smoother and more consistent mixes, improving ease of application.
• Water-Based and Low Odour: Suitable for internal and external applications in both residential and commercial settings.
• Versatile Use: Functions as both a bonding agent and an admixture for a wide range of cementitious products.
• Chloride-Free: Non-corrosive and safe for use in reinforced concrete or areas with metal components.
• Resistant to Frost and Chemical Attack: Offers improved resistance to freeze-thaw cycles and mild chemical exposure in aggressive environments.

Applications

Sika Sikabond SBR+ is highly versatile and suitable for numerous applications including:

• Bonding Agent: For rendering and screeds on concrete, brick, and blockwork.
• Admixture: For improving the performance of floor screeds, repair mortars, and external renders.
• Waterproofing Slurry: When mixed with cement, forms a durable barrier against moisture and water penetration.
• Patch Repairs and Refurbishment: Ideal for repairing concrete and masonry structures exposed to the elements.
• Tanking Systems: Used as part of a tanking slurry to provide damp-proof barriers in basements and below-ground structures.

Technical Specifications

Application Guidelines

Surface Preparation:
All substrates must be clean, sound, and free of oil, grease, loose particles, and contaminants. Dampen the surface slightly before application but avoid standing water.

As a Bonding Agent:

• Mix 1 part Sika SBR+ with 1 part water and 2 parts cement to create a slurry.
• Brush slurry onto the substrate. Apply mortar or screed while the slurry is still tacky.

As a Mortar/Screed Admixture:

• Replace part of the gauging water with a mix of Sika SBR+ and water (typically 1:1).
• Dosage: Approx. 5–10 litres per 50 kg of cement, depending on the application.

Waterproofing Slurry:

• Mix Sika SBR+ with cement in a 1:1 ratio by volume.
• Apply using brush or trowel in multiple coats for effective coverage.

Health & Safety

• Always wear protective gloves, clothing, and eye protection during use.
• Avoid direct skin and eye contact.
• In case of contact, rinse immediately with clean water and seek medical advice if irritation persists.
• Keep out of reach of children and ensure adequate ventilation during use.
• Refer to the Safety Data Sheet (SDS) for full safety information.

Frequently Asked Questions (FAQ)

Q1: What is Sika SBR+ used for?

Sika SBR+ is used to improve the adhesion, flexibility, and waterproofing properties of cement-based products. It functions as a bonding agent, admixture, and waterproofing slurry.

Q2: Can Sika SBR+ be used in exterior applications?

Yes. It is specifically formulated for use in both interior and exterior environments, including areas exposed to weather and moisture.

Q3: Does Sika SBR+ replace a waterproof membrane?

Sika SBR+ enhances water resistance but should be used in conjunction with other waterproofing systems in areas subject to high water pressure or immersion.

Q4: Is it safe for use in reinforced concrete?

Yes. Sika SBR+ is chloride-free and non-corrosive, making it safe for use around steel reinforcements.

Q5: How do I store the product?

Store in a cool, dry place away from direct sunlight and frost. Always keep the container tightly closed when not in use.

Q6: Can I use it in floor screeds?

Absolutely. Sika SBR+ is commonly used in floor screeds to improve adhesion to the substrate, reduce cracking, and improve durability.

Q7: Does it affect curing time?

Sika SBR+ does not significantly affect setting or curing time but may slightly extend open time due to improved workability and moisture retention.

Why Choose Sika Sikabond SBR+?

Engineered by Sika, a global leader in construction chemistry, Sikabond SBR+ is trusted by professionals for its proven performance in challenging environments. Whether you're bonding renders, waterproofing basements, or enhancing screed durability, Sika SBR+ delivers consistent, reliable results with every use. Its versatility, ease of use, and robust waterproofing capabilities make it a must-have for serious builders and renovators.