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Attention: This product is special order only, delivery of product can take an estimated 1 week or more. Please contact us directly for more information.
Use RLA Penapatch HB50 High Build Repair Mortar for: Restoring damaged concrete on vertical and overhead surfaces, minimising shrinkage, and achieving high durability in patch repairs
RLA Penapatch HB50 High Build Repair Mortar is a polymer-modified, fibre-reinforced cementitious mortar engineered for vertical and overhead repairs in concrete structures. Designed for high build applications up to 50mm in a single pass, this high-performance repair mortar delivers exceptional adhesion and minimal sag. Ideal for patching spalled or deteriorated concrete in commercial, civil, and industrial environments, it complies with AS/NZS standards and exhibits high early and ultimate strengths. Penapatch HB50 is shrinkage-compensated and requires only water to mix, making it user-friendly for Australian trade professionals seeking reliable, durable results.
Key Features of RLA Penapatch HB50 High Build Repair Mortar
- High build application up to 50mm in one layer without sagging
- Excellent adhesion to concrete substrates, ensuring long-term durability
- Polymer modification and fibre reinforcement improve flexural strength
- Shrinkage-compensated for stable, crack-free repairs
- Just add water – no primer or bonding agents required
Technical Overview
- Chemical Properties: Polymer-modified, fibre-reinforced cementitious mortar
- Application Temperature Range: 10°C to 35°C (50°F to 95°F)
- Compressive Strength: >50 MPa at 28 days
- Pot Life: Approximately 45 minutes at 23°C
- Maximum Build Thickness: 50mm per layer
- Water Addition: 3.3 – 3.75 litres per 15kg bag
Trade Professional Information
- Required Tools: Trowel, mixing paddle and drill, hawk, sponge float
- Trade-Specific Tips: For vertical or overhead applications, apply with firm pressure to maximise bonding; use a sponge float for finishing if required
- Common Issues and Solutions: For dry surfaces, pre-wet substrate to prevent premature water absorption; avoid applying below 5°C or in direct hot sun
Storage and Shelf Life
- Storage Requirements: Store in a dry, cool area away from moisture
- Shelf Life Information: 12 months in original unopened packaging
- Temperature Considerations: Keep between 5°C and 30°C during storage
Certifications
- AS/NZS 4020 compliant – suitable for use in contact with drinking water
- Meets performance standards for structural concrete patch repairs
Frequently Asked Questions About RLA Penapatch HB50 High Build Repair Mortar
Q: How should I apply RLA Penapatch HB50 for vertical surfaces?
A: For vertical surfaces, use a clean trowel to firmly press the mixed mortar into the prepared substrate. Apply in layers no thicker than 50mm and finish with a sponge float if required.
Q: How strong is the final cured product?
A: RLA Penapatch HB50 achieves compressive strength greater than 50 MPa after 28 days, providing high structural integrity suitable for heavy-duty repair work.
Q: Can I use it on surfaces other than concrete?
A: RLA Penapatch HB50 is formulated for concrete substrates. It is not recommended for use on timber, steel, or plastic without a compatible bonding system.
Q: What if the mortar starts setting too quickly?
A: If the mortar sets prematurely, it may be due to high ambient temperature or insufficient water. Always mix in cool, shaded areas and never add more water once setting has begun.
Q: What are the safety precautions during use?
A: Wear gloves, dust mask, and safety goggles. Ensure good ventilation when mixing. Avoid contact with skin and eyes, and wash with clean water if exposed.
Use RLA Penapatch HB50 High Build Repair Mortar for:
- Repairing vertical and overhead spalled concrete
- Concrete restoration in columns, beams, and soffits
- Patch repairs in civil and commercial infrastructure projects
Why Use RLA Penapatch HB50 High Build Repair Mortar:
- Easy single-pass high build application saves time on-site
- Fibre reinforcement enhances strength and reduces cracking risk
- Excellent bond to concrete ensures durable repairs
- Simple water-only mix design improves application efficiency
How to apply RLA Penapatch HB50 High Build Repair Mortar:
- Prepare the surface by removing loose concrete, dust, and contaminants
- Pre-wet the substrate, ensuring surface is damp but free of standing water
- Mix 15kg of powder with 3.3 – 3.75 litres of clean water using a mechanical paddle
- Apply the mortar using a trowel, working firmly into the surface
- Finish with a sponge float as needed once initial set has begun
- Protect the repair area from rain or rapid drying for at least 24 hours
RLA Penapatch HB50 High Build Repair Mortar limitations:
- Not suitable for use below 5°C or above 35°C during application
- Should not be applied over painted or sealed surfaces without removal
- Not designed for trafficable surfaces without a protective coating
Safety precautions when using RLA Penapatch HB50 High Build Repair Mortar:
- Personal Protective Equipment: Gloves, safety goggles, dust mask
- Ventilation: Use in well-ventilated areas or outdoors
- Handling: Avoid contact with skin and eyes; wash thoroughly after handling
- Keep out of reach of children and dispose of packaging according to local regulations
RLA Penapatch HB50 High Build Repair Mortar can be used on the following substrates:
- Concrete – must be clean, sound, and free of laitance
- Reinforced Concrete – remove rust and scale before application
- Cementitious Renders – provided surface is stable and dust-free
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