Sika Sikalastic-560
Sika Sikalastic-560
Sikalastic®-560 is a one-component, cold-applied, waterborne liquid applied waterproofing membrane based on Sika Co-Elastic Technology (CET). Ready to use with no heat or flame required. Features high elasticity (~350% elongation), UV and weather resistance, and water vapour permeability. The white version achieves solar reflectance of 0.82 (Energy Star compliant) and SRI 102 (LEED compliant). Suitable for roof waterproofing in new construction and refurbishment projects. Listed on the Hong Kong Eco-Product Directory.
Sikalastic-560 — Economical Liquid Applied Roof Waterproofing Membrane
Sikalastic®-560 is a one-component, cold-applied, waterborne liquid applied waterproofing membrane. The chemical base is polyurethane modified acrylic dispersion. It is ready to use — no heating or flame required. When applied, it forms a seamless, highly elastic and UV resistant waterproofing membrane. The product is water vapour permeable, allowing the substrate to breathe. It is suitable for roof waterproofing in both new construction and refurbishment projects, particularly for roofs with complex geometry or limited accessibility.
Key Features
- One-component, ready to use — no mixing required
- Cold applied — requires no heat or flame
- Seamless waterproofing membrane — no joints or laps
- UV resistant and UV stable
- Highly elastic and crack-bridging (~350% elongation at break)
- Easily recoated when needed — no stripping required
- Economic — cost efficient life cycle extension for failing roofs
- Low VOC emitting water-based coating (VOC < 50 g/l)
- Excellent adhesion on porous and non-porous substrates
- Water vapour permeable — allows the substrate to breathe
- 18 months shelf life
Applications
- Roof waterproofing — liquid applied waterproofing for new construction and refurbishment projects
- Complex roofs — roofs with many details, complex geometry or limited accessibility
- Roof life extension — cost efficient life cycle extension of failing roofs
- Reflective coating — white version enhances energy efficiency by reducing cooling costs
Why Choose Sikalastic-560?
Sikalastic-560 is an economical liquid roof waterproofing solution in the Sika range, trusted by professional waterproofing contractors:
- Energy efficiency: White version achieves solar reflectance 0.82, SRI 102 — compliant with Energy Star and LEED v2009 SSc 7.2 (Heat Island Effect)
- Green certification: Listed on Hong Kong Eco-Product Directory (application no. PL-01601-2023), LEED v2009 IEQc 4.2 (Low-Emitting Materials) compliant
- European certification: CE marking (ETAG 005, ETA-12/0308), meets ENV 1187 BRoof (T1) external fire performance requirements
- Refurbishment economics: Can be applied directly over old waterproofing — no stripping required, saving time and cost
- Sika brand: Swiss Sika — over 100 years of proven quality and reliability
For other roof waterproofing solutions, browse our roof waterproofing range.
Packaging
| Item | Specification |
|---|---|
| Packaging | 20 kg pail |
| Colours | Grey, terracotta, red, white (Energy Star) |
| Shelf Life | 18 months from date of production (store in original, unopened, undamaged sealed packaging at +5°C to +30°C in dry conditions) |
Technical Specifications
| Parameter | Value |
|---|---|
| Chemical Base | Polyurethane modified acrylic dispersion (waterborne) |
| Density | ~1.35 kg/l at +23°C |
| Solid Content by Weight | ~65% (+23°C / 50% r.h.) |
| Solid Content by Volume | ~48% (+23°C / 50% r.h.) |
| Tensile Strength (not reinforced) | ~1.5 N/mm² |
| Tensile Strength (with Fleece-80) | ~12.0 N/mm² |
| Tensile Strength (with Glass Fabric -55G) | ~4.0–5.0 N/mm² |
| Elongation at Break (not reinforced) | ~350% |
| Solar Reflectance (white) | 0.82 (meets Energy Star ≥ 0.820) |
| Thermal Emittance (white) | 0.93 |
| Solar Reflectance Index (white) | 102 |
| Service Temperature | -10°C to +80°C (with fleece) / -5°C to +80°C (without fleece) |
| Application Temperature (ambient & substrate) | +8°C to +35°C (substrate ≥ 3°C above dew point) |
| Max. Relative Air Humidity | 80% r.h. |
| Max. Substrate Moisture Content | ≤ 6% by weight |
| VOC Content | < 50 g/l (meets HK EPD Regulated Architectural Paints VOC limits) |
Consumption
| System | Consumption | Dry Film Thickness |
|---|---|---|
| Roof coating (2–3 coats, unreinforced) | ≥ 0.9–1.4 kg/m² (≥ 0.6–1.0 l/m²) | ≥ 0.3–0.5 mm |
| Reinforced system — base coat | ≥ 1.0–1.5 kg/m² (≥ 0.75–1.1 l/m²) | — |
| Reinforced system — top coats (1–2 coats) | ≥ 1.1–1.3 kg/m² (≥ 0.80–0.95 l/m²) | — |
Do not apply more than 0.75 kg/m² per coat for layers without reinforcement. Figures are theoretical and do not include additional material for surface porosity, profile, variations in level and wastage.
Drying and Curing Times
| Stage | +20°C / 50% r.h. | +30°C / 50% r.h. |
|---|---|---|
| Touch Dry | Approx. 2 hours | Approx. 1 hour |
| Rain Resistant | Approx. 8 hours | Approx. 4 hours |
| Full Cure | Approx. 4 days | Approx. 2 days |
Waiting time between coats: approx. 6 hours (+20°C) / approx. 4 hours (+30°C). After Sikalastic® Fleece reinforcement: 24 hours waiting time.
Important Notes
- Do not apply on substrates with rising moisture
- Not suitable for permanent water immersion
- Substrate moisture content must not exceed 6% by weight — substrate must be visibly dry with no standing water
- Application temperature must be +8°C to +35°C — temperature must not drop below 8°C and humidity must not exceed 80% r.h. until fully cured
- Substrate temperature must be at least 3°C above dew point
- Application during rising ambient and substrate temperatures may cause "pin holing" from rising air (outgassing)
- Do not apply directly on insulation boards — use Sikalastic® Carrier as a separation layer
- Not for roofs subject to long-term ponding water; in cold climates, roofing structures with pitch less than 3% must consider ponding water freezing
- Areas with high movement, irregular substrates or timber-based roof decks require a complete Sikalastic® Carrier layer
- Roofs subject to freezing at service temperature around -10°C must be reinforced with Sikalastic® Fleece-80
- Do not apply more than 0.75 kg/m² per coat for unreinforced layers
- Clean all tools and equipment with clean water immediately after use
FAQ
How is Sikalastic-560 different from traditional bitumen waterproofing membranes?
Sikalastic-560 is a waterborne liquid membrane applied cold — no flame or heat required, forming a seamless membrane with no joints that could leak. Traditional bitumen sheet membranes require torch-on application and have lap joints that can deteriorate over time. Sikalastic-560 is particularly suited for complex roof geometries and refurbishment projects, as it can be applied directly over existing waterproofing.
Does the white Sikalastic-560 provide thermal insulation?
The white version achieves a solar reflectance of 0.82 and SRI of 102, effectively reflecting solar heat to reduce roof surface temperature and building cooling costs. It meets Energy Star initial solar reflectance requirements and LEED v2009 SSc 7.2 Heat Island Effect standards. However, it is a reflective coating, not thermal insulation — it reduces heat gain by reflection rather than insulation.
Can Sikalastic-560 be used for bathroom waterproofing?
Sikalastic-560 is designed specifically for roof waterproofing and is not suitable for permanent water immersion. For bathroom waterproofing, consider the Sika cementitious waterproofing range (e.g. SikaTop-300 Seal). Please WhatsApp us for the right solution.
What is the coverage of Sikalastic-560?
For roof coating (unreinforced, 2–3 coats): ≥ 0.9–1.4 kg/m² with dry film thickness ≥ 0.3–0.5 mm. A 20 kg pail covers approximately 14–22 m² (unreinforced system). The reinforced system requires additional material for the base coat and top coats. Actual coverage depends on substrate conditions.
How much does Sikalastic-560 cost?
Please WhatsApp us for the latest Sikalastic-560 pricing. We offer self-pickup from our Mong Kok store and Hong Kong delivery service.
