Sika Australia
Sika Sikalastic-777 Root-Resistant PU Membrane 15L
- Regular price
- $340.50 AUD
- Sale price
- $340.50 AUD
- Regular price
-
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- Root-resistant performance suits planter boxes and below-ground waterproofing.
- High resistance to stagnant water supports demanding waterproofing areas.
- More than 300% elongation provides Class III membrane performance.
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Overview & Features
- UV-resistant black elastomeric membrane
- More than 300% elongation with Class III performance according to AS/NZS 4858
- Low-VOC formulation with a stated VOC content of 250 g/L
- Hand-applied in two coats over a suitable primer
- Approved to AS/NZS 4654.1:2012 for external above-ground waterproofing membranes
Application Guide
- 1. Confirm the substrate temperature is +5°C to +35°C, relative humidity is 20–90% and substrate moisture is no more than 5%.
- 2. Prepare the substrate so it is clean, sound, smooth, dust-free and oil-free.
- 3. Apply a suitable primer. Do not install Sikalastic-777 without primer; use a compatible epoxy primer on high-porosity substrates.
- 4. Apply the first coat at not less than 0.670 L/m² on vertical surfaces or 0.8 L/m² on floors.
- 5. Recoat after one night and within two days at the same minimum application rate.
- 6. Achieve a minimum dry film thickness of 1.0 mm vertically or 1.2 mm on floors.
- 7. Allow 24 hours for full cure and before light foot traffic.
- 8. If rain occurs or the recoat interval is exceeded, follow the TDS procedure for abrasion and Sika Thinner C reactivation, or remove and reapply the coating.
Specifications & Standards
- Technology: Single-pack, moisture-curing polyurethane
- Colour: Black
- Packaging: 15L pail
- Density: 1.30–1.35 g/cm³
- Viscosity: 10,000–18,000 cP at 30 RPM
- VOC: 250 g/L
- Vertical system: Two coats at minimum 0.670 L/m² per coat for 1.0 mm DFT
- Floor system: Two coats at minimum 0.8 L/m² per coat for 1.2 mm DFT
- Recommended dry film thickness: 1.0–1.2 mm
- Tensile strength: 6 MPa
- Elongation at break: Greater than 300%
- Tear strength: 20 kN/m
- Shore A hardness: 70
- Recoat: After one night and within two days
- Full cure: 24 hours
- Light foot traffic: After 24 hours
- Application temperature: +5°C to +35°C
- Relative humidity: 20–90%
- Maximum substrate moisture: 5%
- Service temperature: -20°C to +80°C
- Shelf life: 9 months
- Storage: Dry, unopened and sealed at +5°C to +30°C
- Standard: AS/NZS 4654.1:2012
- Membrane class: Class III according to AS/NZS 4858
Product Documents
Complete Your System
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Current product Sika Sikalastic-777 Root-Resistant PU Membrane 15L $340.50 AUD In stock -
Sika Sikalastic-100 EP Epoxy Primer 30kg Kit
Applications
Planter Box
External Waterproofing
Below Ground
Technical Specifications
Key technical properties of this product. Refer to the Technical Data Sheet for complete installation and performance information.
| Classification | Class III membrane; >300% elongation according to AS/NZS 4858 |
|---|---|
| Mixing Ratio | Single component; ready to use |
| Coverage | Vertical: 0.670 L/m² per coat; floors: 0.8 L/m² per coat |
| Recommended Coats | Two coats |
| Dry Film Thickness | Minimum 1.0 mm vertical; 1.2 mm floors |
| Hydrostatic Resistance | High resistance to stagnant water; no numeric value stated |
| Elongation at Break | >300% |
| Tensile Strength | 6 MPa |
| Recoat Time | After one night and within two days |
| Full Cure | 24 hours |
| Suitable Substrates | Clean, sound, smooth, dust-free and oil-free substrates, primed as specified |
| Internal / External Use | External and below-ground applications listed in the TDS |
| Service Temperature | -20°C to +80°C |
| Primer Requirement | Primer mandatory; Sikalastic-100 EP is a confirmed compatible primer |
Need Technical Advice?
Not sure if this product is suitable for your project?
Our technical team provides independent advice on product selection, compatibility and waterproofing systems.
Independent product advice backed by real-world waterproofing experience.
Contact Technical Support
(07) 3667 9878
Monday–Friday
7:00 am – 3:00 pm AEST
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