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Use RLA Penapatch Panel LW – Repair Mortar for: Fast, non-structural repairs on vertical and overhead concrete surfaces, especially precast and tilt-up panels.
RLA Penapatch Panel LW – Repair Mortar is a lightweight, polymer-modified cementitious mortar specifically designed for high-build applications up to 100mm. Fire-rated to AS1530.4 when applied at 35mm, it provides outstanding adhesion to concrete and masonry surfaces with minimal shrinkage. This fine-filled Australian-made mortar is ideal for covering metal joiner plates in precast and tilt-up panels, as well as repairing damaged concrete in vertical or overhead orientations. Its easy-to-mix formula requires only water and finishes to a smooth surface ready for coating.
Key Features of RLA Penapatch Panel LW – Repair Mortar
- High-build repairs up to 100mm without formwork
- Fire-rated (4 hours to AS1530.4) at 35mm thickness
- Excellent adhesion and minimal shrinkage
- Easy to apply and finish to a smooth surface
- Compatible with RLA coatings and render systems
- Australian-made and formulated for local conditions
Technical Overview
- Chemical Properties: Polymer-modified cementitious mortar with lightweight fillers
- Application Temperature Range: 5°C to 35°C (41°F to 95°F)
- Density: 900 kg/m³ (fresh wet)
- Compressive Strength: 20 MPa at 28 days
- Flexural Strength: 7.1 MPa at 28 days
- Yield: 15 litres per 10kg bag
- Coverage Rate: 1.85 kg/m²/mm
Trade Professional Information
- Required Tools: High-shear spiral mixing paddle, trowel, gloves, steel float
- Trade-Specific Tips: Use RLA RENDERGRIP A to reduce premature drying in warm or windy conditions
- Common Issues and Solutions: Avoid adding excess water to prevent reduced strength and extended curing time
Storage and Shelf Life
- Storage Requirements: Store in a dry, cool area away from direct sunlight and off cold floors
- Shelf Life Information: 12 months in original unopened packaging
- Temperature Considerations: Protect from freezing or overheating
Certifications
- Fire-rated to AS1530.4 (4 hours at 35mm thickness)
- Compressive strength tested to AS1012 & AS2073
- Flexural strength tested to ASTM C348-86
Frequently Asked Questions About RLA Penapatch Panel LW – Repair Mortar
Q: How do I apply the product to vertical surfaces?
A: Use a steel trowel or gloved hand to apply Penapatch Panel LW to the substrate. Thoroughly compact the mortar and finish with a steel trowel. Ensure minimum 5mm thickness is maintained and avoid overworking the surface.
Q: How strong is the mortar once cured?
A: At 28 days, Penapatch Panel LW achieves a compressive strength of 20 MPa and a flexural strength of 7.1 MPa, making it suitable for non-structural repairs in commercial and industrial applications.
Q: Is this mortar compatible with existing coatings?
A: Yes, it's compatible with RLA protective and decorative coatings. Ensure the surface is clean and properly cured before applying coatings or renders for best adhesion.
Q: What should I do if the mortar sets too quickly?
A: In hot or windy conditions, premature drying can occur. Use chilled water for mixing and apply RLA RENDERGRIP A as a curing aid. Avoid reworking the mix once it has begun to set.
Q: Are there any special disposal or safety requirements?
A: Dispose of any uncured product according to local regulations. Always wear gloves, eye protection, and ensure proper ventilation during application. Refer to the SDS for full safety details.
Use RLA Penapatch Panel LW – Repair Mortar for:
- Patching and covering metal joiner plates in precast tilt-up construction
- Vertical surface repairs up to 50mm and overhead builds up to 100mm
- High-build fairing coats for cosmetic concrete restoration
- Prepping concrete surfaces before painting or rendering
Why Use RLA Penapatch Panel LW – Repair Mortar:
- Eliminates formwork for vertical and overhead applications
- Fast drying with a smooth finish ready for coating
- Reduces risk of shrinkage cracking with shrinkage-compensated formula
- Fire-rated performance suitable for compliant builds
How to apply RLA Penapatch Panel LW – Repair Mortar:
- Clean surface of contaminants like oil, paint, and dust
- Pre-soak substrate with water (avoid pooling) or use RLA RENDERGRIP A for porous surfaces
- Mix 3.1–3.6L of water per 10kg bag using a high-shear spiral mixer
- Add powder to water while mixing to avoid lumps
- Apply with trowel or gloved hand, compacting thoroughly
- Finish with a steel trowel for smooth texture
- Apply RLA RENDERGRIP A over finished areas in hot or windy conditions for curing
RLA Penapatch Panel LW – Repair Mortar limitations:
- Not suitable for load-bearing or structural repairs
- Not designed for pedestrian or vehicle traffic surfaces
- Must not be applied thinner than 5mm except for minor feather edges
- Excessive water during mixing reduces strength and increases drying time
- Reflective cracking may occur if underlying substrate cracks or moves
Safety precautions when using RLA Penapatch Panel LW – Repair Mortar:
- Personal Protective Equipment: Wear gloves, eye protection, and a dust mask when mixing or sanding
- Ventilation: Ensure adequate airflow in enclosed spaces
- Handling: Mix only what can be applied within the working time; do not re-temper
- Refer to the product SDS for detailed safety and first aid information
RLA Penapatch Panel LW – Repair Mortar can be used on the following substrates:
- Concrete – Ensure surface is clean and mechanically keyed
- Precast Panels – Ideal for tilt-up construction and joint plate coverage
- Masonry – Requires pre-soaking and priming if porous
- Steel Reinforcement – Must be cleaned and primed with RLA Zinc Primer
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