For cement screeds, renders, and patch mortars exposed to weather, continuous immersion, or underground dampness, Gripset 11Y is a concentrated SBR latex polymer admixture that improves adhesion, flexural strength, and water resistance. It prevents water-pathway failures in demanding wet areas, reduces the occurrence of efflorescence in screeds, and acts as a high-bond slurry primer over porous concrete, masonry, and blockwork.
Gripset 11Y modifies cement-based compounds by replacing a portion of the mixing water with SBR latex polymer. This polymer network forms within the curing cement matrix, reducing the water-to-cement ratio and closing down the capillary pathways that allow water and salt migration. The result is a highly dense mortar or screed with reduced permeability to liquids and gases, increased resistance to freeze-thaw cycles, and higher early strength development. It also increases flexural strength and durability, allowing thin-build repairs and screeds to withstand movement without cracking or delaminating from the substrate.
For all applications, substrates must be clean, sound, dry, and free of dust, oil, grease, curing compounds, release agents, and loose material. Mechanically remove structurally unsound layers by grinding or abrasive blasting. If the substrate is subject to active moisture or rising damp, treat it with Gripset E60 before application.
When applying screeds, renders, or patch mortars, first prime the surface with the 11Y Primer/sealing slurry. For optimum adhesion, apply the screed or mortar directly onto the wet or damp primer using a "wet-on-wet" method. Wash all tools with water immediately after use; dried material must be removed mechanically.
Yes, Gripset 11Y is specifically formulated for continuous immersion and subterranean environments. It enhances the waterproof properties and durability of cement-based compounds in these demanding conditions.
Do not use Gripset 11Y on glass or glazed surfaces. It is also not suitable for raw steel or metals unless specifically instructed, nor for areas with active rising moisture or negative hydrostatic pressure.
It is an SBR latex polymer that significantly improves adhesion strength, flexural strength, and water resistance. It also reduces permeability, efflorescence, and shrinkage, making mixes more durable in harsh conditions, including freeze/thaw cycles.
Mix 1 part Gripset 11Y, 1 part wash sand, and 1 part fresh Portland cement by volume. Use an electric mixer to form a fluid slurry, then let it settle for 3-4 minutes before a final stir to ensure solids are suspended.
| Application | Key benefit | Primary trades |
|---|---|---|
| High bonding primer/sealing slurry | Ensures superior adhesion for cementitious overlays, particularly in immersed or subterranean areas. | Waterproofers, Concreters, Tilers |
| Water-resistant screeds and renders | Increases flexural strength, reduces efflorescence, and enhances water resistance, preventing premature failure in wet environments. | Renderers, Plasterers, Concreters |
| Patch mortars and thin build coatings | Provides water resistance and durability for repairs in areas subject to continuous moisture or immersion. | Masons, Concreters, Repair Specialists |
| Cement-based adhesive and grout enhancer | Improves water resistance and bond of tile adhesives and grouts, suitable for challenging and harsh climatic conditions. | Tilers, Waterproofers |
Ensure all substrates are clean, sound, dry, and free from dust, oil, grease, curing agents, moss, algae, or other contaminants. Mechanically remove weak or loose material. Treat active moisture or rising damp with Gripset E60 before application.
Use grinding or abrasive blasting to remove laitance and contaminants, achieving an open surface for maximum adhesion.
Vacuum or blow off dust, then lightly dampen porous surfaces immediately before priming to control suction.
Create a high-bond slurry primer for screeds, renders, or patch mortars by combining equal volumes of Gripset 11Y, sharp washed sand, and fresh Portland cement.
1 part Gripset 11Y : 1 part sharp washed sand : 1 part cement. Mix slowly with a paddle mixer to a fluid slurry consistency.
Allow mix to stand for 3–4 minutes, then lightly re-stir before application to ensure even dispersion.
Form a mixing liquid by combining Gripset 11Y with water at the required ratio, then blend with dry cement/sand mixtures to achieve the desired consistency.
Dry mix 1 part cement : 4 parts fine washed sand. Liquid mix 1 part 11Y : 3 parts water. Combine to a workable consistency.
Dry mix 1 part cement : 3 parts fine washed sand. Liquid mix 1 part 11Y : 1 part water. Minimum build 3 mm for thin coatings.
Replace part of the adhesive or grout mix water with a Gripset 11Y and water solution to improve bond strength and moisture resistance.
1 part Gripset 11Y : 3 parts water. Use as total mix liquid with cement-based adhesives or grouts in high-performance applications.
Ideal for immersed, external, or high-traffic areas where standard mixes may degrade faster.
Clean all tools and mixing equipment with water immediately after use. Do not allow mixed material to dry on tools – hardened product must be removed mechanically.
Rinse with clean water while product is still wet.
Mechanically remove dried residues; avoid using solvents that may damage equipment.
Gripset 11Y is not classified as hazardous by Safe Work Australia.
When handling for general use, wear safety shoes, overalls, gloves, and safety glasses. Nitrile rubber gloves are suggested for intermittent contact.
Ensure a well-ventilated area for handling and mixing.
Store in a cool, dry, well-ventilated place, out of direct sunlight. Keep containers closed and check for leaks. Avoid freezing conditions and storage directly on concrete floors. Shelf life is 12 months in unopened containers. Clean tools with water while wet; dried product requires mechanical removal.
Proper surface preparation is crucial for Gripset 11Y to achieve its full bonding and enhancing capabilities. Poor prep leads to adhesion failure.
Surface prep: All surfaces must be clean, sound, dry, and free from loose material, dust, oil, grease, and curing compounds. Mechanically remove unsound layers by grinding or abrasive blasting to ensure a robust surface.
Primer: Required. Use the 11Y primer/sealing slurry. Very porous surfaces can be lightly dampened before slurry application.
Surface prep: Ensure surfaces are clean, free of dust and loose particles. Remove any contaminants that could compromise adhesion.
Primer: Required. Apply the 11Y primer/sealing slurry. Lightly dampening very porous blocks can aid application.
Surface prep: Clean, sound, and dry. Remove all dust, residues, and surface contaminants. Mechanically prepare to expose a clean, bondable surface.
Primer: Required. Apply the 11Y primer/sealing slurry. This improves bond for overlays in wet areas.
Surface prep: Surfaces must be stable, fully cured, clean, and free from any loose material or surface contaminants. Ensure the surface is sound and won't delaminate.
Primer: Required. The 11Y primer/sealing slurry enhances adhesion over these surfaces.
Surface prep: Contact RLA Technical Department for specific advice on surface preparation and suitability. Compatibility is key for reliable performance.
Primer: Consult RLA Technical Department. Do not assume compatibility without verification.
| Property | Value |
|---|---|
| Form | Thin liquid |
| Colour | White |
| Solubility in Water | Miscible |
| Specific Gravity (20 °C) | 1.1 |
| pH | 9-10 |
| Shelf Life | 12 months in unopened container |
| Primer Slurry Coverage | 1 litre of Gripset 11Y per 3m² |
| Primer Slurry Mix Ratio (by volume) | 1 part Gripset 11Y, 1 part wash sand, 1 part cement |
| High Performance Screeds/Renders Liquid Mix Ratio (by volume) | 1 part Gripset 11Y, 3 parts water |
| Patch Mortars Liquid Mix Ratio (by volume) | 1 part Gripset 11Y, 1 part water |
| Cement-Based Adhesive/Grout Enhancer Liquid Mix Ratio (by volume) | 1 part Gripset 11Y, 3 parts water |
| Minimum Patch Mortar Build | 3mm |
Here are some common examples on where Gripset 11Y Admixture used by our customers.
