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Use SILCOR 560 HB LVOC for: Waterproofing wet areas, planter boxes, balconies, lift pits, retaining walls, and roof decks in residential and commercial construction
SILCOR 560 HB LVOC is a premium, one-part, liquid-applied polyurethane waterproofing membrane formulated for robust performance in Australian conditions. With very low VOC emissions, this grey, high-solids membrane cures through ambient humidity to form a fully bonded, elastomeric, and flexible barrier. Ideal for both new builds and remedial work, it is suitable for internal wet areas, planter boxes, balconies, lift pits, and more. Applied cold by roller or brush, it eliminates seams and reduces the risk of water ingress. Compliant with AS3740 and AS4654 standards, it is a trusted solution where long-lasting, non-trafficable waterproofing is required.
Key Features of SILCOR 560 HB LVOC
- One-part, ready-to-use polyurethane membrane—no mixing required
- Seamless, monolithic application minimises joints and failure points
- Very low VOC—ideal for enclosed or sensitive environments
- Fully bonded to substrate—prevents water tracking
- Flexible and crack-bridging—handles normal movement and shrinkage
- Cold-applied—no heat or flames needed on site
Technical Overview
- Chemical Properties: High solids polyurethane (91% solids)
- Application Temperature Range: +5°C to +35°C (41°F to 95°F)
- Specific Gravity: 1.48 ±0.03
- Tensile Strength: >2.0 MPa
- Elongation at Break: >550%
- Shore A Hardness: 55 ±5
- Dry Film Thickness: 1.5 mm minimum (in two coats)
- Cure Time for Flood Test: 48 hours at 22°C and 60% RH
Trade Professional Information
- Required Tools: Slow-speed mixer (650W+), roller, brush, or straight-edge squeegee
- Trade-Specific Tips: Apply when substrate temps are stable/falling to prevent outgassing
- Common Issues and Solutions: For porous concrete, prime with SILCOR Primer BS and re-prime to seal pinholes before applying membrane
Storage and Shelf Life
- Storage Requirements: Store in original packaging, dry, 15°C–25°C, away from sunlight and moisture
- Shelf Life Information: 9 months from manufacture date (unopened)
- Temperature Considerations: Do not store below 5°C or above 35°C
Certifications
- AS3740-2010 Compliant for Internal Wet Areas
- AS4654.1 and AS4654.2 Compliant for External Waterproofing
- Class III Elastomeric Membrane per NCC Requirements
Frequently Asked Questions About SILCOR 560 HB LVOC
Q: How should SILCOR 560 HB LVOC be applied?
A: Apply using a roller, brush, or straight-edge squeegee in two coats. Ensure the substrate is properly primed and apply when the temperature is stable or falling to avoid pinholes from outgassing.
Q: How long does SILCOR 560 HB LVOC take to cure?
A: At 22°C and 60% RH, it is tack-free in 4 hours and ready for backfilling or flood testing in 48 hours. Cure times vary based on temperature and humidity.
Q: What surfaces can SILCOR 560 HB LVOC adhere to?
A: It can be used on primed concrete, masonry, compressed fibre cement sheet, CCS, metal, plywood, GRC, and more. Always ensure surfaces are clean, dry, and stable before priming.
Q: What should I do if pinholes appear during application?
A: Pinholes are often caused by outgassing. Re-prime the substrate and ensure it's applied during cooler parts of the day when concrete temps are stable or falling.
Q: What safety measures should I follow?
A: Wear gloves, goggles, and a respirator. Ensure adequate ventilation. Avoid skin contact and inhalation. Refer to the Safety Data Sheet before use.
Use SILCOR 560 HB LVOC for:
- Internal wet area waterproofing (bathrooms, showers, laundries)
- External above-ground waterproofing (balconies, podiums, planter boxes)
- Below-ground tanking and lift pit waterproofing
- Non-potable water tank lining (internal)
Why Use SILCOR 560 HB LVOC:
- High flexibility and crack bridging for structural movement tolerance
- Seamless membrane eliminates joints and reduces failure risk
- Very low VOC formula improves on-site safety and indoor air quality
- Compliant with key Australian waterproofing standards (AS3740, AS4654)
How to apply SILCOR 560 HB LVOC:
- Prepare the substrate by cleaning and removing all contaminants, laitance, and loose particles.
- Prime the surface using the appropriate SILCOR Primer (BS, BW Clear/Grey, etc.). Allow to dry tack-free.
- Apply the first coat of membrane using a roller, brush, or squeegee. Check WFT with a gauge.
- Allow the first coat to cure (minimum 12 hours at 22°C) before applying the second coat.
- Apply the second coat to achieve a total DFT of at least 1.5mm.
- Inspect for full coverage and allow full curing (typically 48 hours) before protection, backfilling, or flood testing.
SILCOR 560 HB LVOC limitations:
- Not suitable for exposed or trafficable surfaces—must be protected from UV and foot traffic
- Cannot be applied below 5°C or above 35°C substrate temperature
- Requires proper priming on porous or difficult substrates to avoid adhesion failures
- Humidity below 25% can significantly delay or prevent curing
Safety precautions when using SILCOR 560 HB LVOC:
- Personal Protective Equipment: Gloves, safety goggles, protective clothing, and a respirator
- Ventilation: Ensure good airflow when working in enclosed or indoor spaces
- Handling: Mix slowly to avoid air entrapment; avoid skin and eye contact
- Keep away from heat and ignition sources; store in original container tightly closed
SILCOR 560 HB LVOC can be used on the following substrates:
- Concrete (min. 25 MPa, properly cured and primed)
- Blockwork and brick (flush pointed, stable)
- Compressed Fibre Cement (CFC) and Cement Composite Sheets (CCS) with correct primer
- Water-resistant plywood and particle board
- Metals (primed and abraded to SA 2.5 standard)
- Glass Reinforced Concrete (GRC)
- Aerated Autoclaved Concrete (AAC) – rendered and sealed
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