Sika Sikabond SBR + 5L White

Sika Sikabond SBR+ 5L White – Advanced Waterproofing Bonding Agent and Mortar Admixture

Overview:
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

Property	Specification
Product Name	Sika Sikabond SBR+ 5L White
Boxed Weight	5.2 kg
Net Volume	5 litres
Color/Form	White liquid
Chemical Base	Styrene Butadiene Rubber Emulsion
pH Value	Approximately 7
Shelf Life	12 months in original, unopened packaging
Storage Conditions	Store in cool, dry place; protect from frost and direct sunlight
Chloride Content	Nil (chloride-free)
Conformity	Conforms to BS EN 934-3:2009 and other relevant admixture standards
Packaging	Sealed recyclable plastic container

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.