SikaBond SBR Plus - 25L
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Product Information
Full details
SikaBond SBR Plus is a versatile styrene-butadiene co-polymer engineered for professional builders, contractors, and DIY enthusiasts requiring a high-performance additive for cementitious mixtures. It excels by providing superior water resistance and long-term durability in damp or exterior environments where standard bonding agents like PVA would fail. While it offers exceptional adhesion and flexibility, users must be careful to follow precise dilution ratios, as the product's performance is entirely dependent on correct mixing for specific applications such as screeding, rendering, or concrete repair.
All features
| Model Part Number | 985260 |
|---|---|
| Brand | SIKA |
Extended Product Information
FAQs
Can I use SikaBond SBR Plus like PVA?
No. While both are bonding agents, SikaBond SBR Plus is water-resistant and suitable for exterior or wet environments, whereas PVA will re-emulsify and fail if exposed to moisture.
Is this product suitable for swimming pools?
Yes, its excellent water resistance makes it a common choice for mortar and render applications in areas exposed to constant water contact.
What is the shelf life of the 25L container?
When stored in original, unopened packaging in a cool, dry place, it typically remains effective for up to 12 months.
Does it contain anti-foam agents?
Yes, SikaBond SBR Plus is formulated with anti-foam agents to control the density of cementitious mixes and prevent air entrapment.
Can I use it on metal surfaces?
It serves as a strong bonding agent for steel; ensure the metal is clean and free of rust before application.
Is it safe for internal use?
Yes, it is perfectly safe for internal use, especially in bathrooms, kitchens, and utility rooms where moisture levels are higher.
Troubleshooting
Poor adhesion to the substrate
Ensure the substrate was properly cleaned of dust and oils. If the surface was too dry, pre-dampen it with water before applying the bonding coat.
The mortar mix feels too thin
You may have added too much SBR solution. Gradually adjust the mix with dry components, ensuring you follow the recommended dilution ratios next time.
Surface cracking shortly after application
Cracking often occurs if the mix dried too quickly. Ensure the area is protected from direct sun or strong winds to allow for a controlled curing process.
Pros and Cons
Pros
- Retains integrity in damp, external, or wet conditions
- Greatly reduces shrinkage and cracking in concrete
- Improves resistance to salt, frost, and chemical abrasion
- Highly versatile (functions as primer, sealer, and admixture)
- Prevents structural failure in high-humidity applications
Cons
- Requires precise measurement and mixing for optimal results
- Not suitable for non-porous surfaces without proper preparation
- Can be difficult to clean if allowed to cure on tools
- Larger 25L volume may be excessive for small home tasks
Setup, Compatibility & Care
- Preparation: Ensure all surfaces are clean, dry, and free from oil, grease, or loose debris. For maximum bond strength on very dense concrete, consider a light mechanical abrading of the surface.
- Dilution: Always follow the specific technical data sheet for your intended application (e.g., priming vs. admixture). Ratios vary significantly based on whether you are using it as a bonding slurry or a mortar additive.
- Application: Apply using a brush for primers or mix directly into the water phase when preparing your mortar or screed.
- Tool Care: Because this product creates a strong adhesive bond, clean all tools, mixers, and brushes with water immediately after use. Once the product cures, it can be extremely difficult to remove mechanically.
- Storage: Keep the 25L container tightly sealed in a frost-free environment to prevent degradation of the polymer components.