Sikalastic 488 AU Waterproofing Membrane - 15ltr Light Grey
Single-pack elastomeric polyurethane waterproofing membrane for demanding applications
- Suitable for balconies, terraces, podium decks, plant rooms and inverted roofs
- Also suitable under tile beds and paver-pad systems
- 15 L pail covers approximately 10 m² in the 1.2 mm system
Sikalastic-488 High Performance Waterproofing Membrane
Sikalastic-488 is a high-performance polyurethane waterproofing membrane designed for balconies, terraces, podium decks and exposed external areas. This single-pack, moisture-curing elastomeric waterproofing membrane forms a seamless, flexible and highly durable waterproof layer suitable for foot traffic and demanding environments.
Ideal for balcony waterproofing, terrace waterproofing and exposed concrete decks, Sikalastic-488 provides excellent resistance to ponding water, cracking and substrate movement.
Used as the base membrane within the SikaRoof MTC-UV waterproofing systems, it creates a long-lasting, trafficable waterproof barrier for residential, commercial and industrial applications.
Applications
Sikalastic-488 is designed for external waterproofing where durability and flexibility are essential, including:
- Balcony waterproofing membranes
- Terrace waterproofing systems
- Podium deck waterproofing
- Plant room floor waterproofing
- Inverted roof waterproofing systems
- Under-tile waterproofing membranes
- Waterproofing under paver-pad systems
- Exposed concrete deck waterproofing
Suitable for new construction and remedial waterproofing projects.
Key Features & Benefits
- Seamless waterproof membrane – eliminates joints and weak points
- High puncture resistance for demanding external areas
- Excellent resistance to ponding and standing water
- High elongation for crack bridging
- Elastomeric flexibility to accommodate substrate movement
- Directly foot-trafficable membrane
- Low VOC formulation for safer application
- Single pack – ready to use
- No reinforcement required in most applications
- Fast tack-free curing
Product Information
Product Type: Elastomeric polyurethane waterproofing membrane
Colour: Light Grey
Packaging: 15L Pail
Classification: Class III Waterproofing Membrane
Application Conditions
Substrate Temperature: +5°C to +35°C
Relative Humidity: 20% – 90%
Substrate Moisture Content: Maximum 5%
Coverage Rates
Coverage depends on the SikaRoof MTC-UV waterproofing system thickness:
| System | Coverage per 15L |
|---|---|
| SikaRoof MTC-12 UV (1.2mm) | ~10m² |
| SikaRoof MTC-14 UV (1.4mm) | ~8.6m² |
| SikaRoof MTC-20 UV (2.0mm) | ~6m² |
Application Instructions
Surface Preparation
All substrates must be clean, sound, smooth and free from dust, oil or contaminants. Proper surface preparation is essential for optimal adhesion and waterproofing performance.
Refer to the SikaRoof MTC-UV System Method Statement for full preparation guidelines.
Mixing
Sikalastic-488 is supplied ready to use. Stir thoroughly until a uniform consistency is achieved before application.
Application
Apply the membrane using a brush or roller to the required system thickness based on the selected SikaRoof MTC-UV specification.
Allow a minimum curing time of 16 hours (or until tack-free) before applying additional layers.
Maximum recoat time: 48 hours.
If exceeded, the surface must be lightly abraded and reactivated with Sika Thinner C before applying the next coat.
Foot Traffic
Light foot traffic is possible after 24 hours under normal curing conditions.
Cleaning
Clean all tools and equipment immediately after use with Sika Thinner C before the membrane cures.
Colour Accuracy Disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.
What Our Customers Say
See what trade professionals, contractors and customers have to say about their experience with ProTrade Warehouse.
