Sikalastic Moisture Seal 20L Kit (Part A + Part B)
Two-component water-based epoxy primer and waterproofing barrier membrane
- Suitable for damp or green concrete and cement screeds
- Helps prevent rising damp and resist hydrostatic pressure
- Primer coverage up to 10m²/L; barrier coverage 3m²/L per coat
Sikalastic Moisture Seal — Water Based Epoxy Primer & Waterproofing Barrier Membrane
Sikalastic Moisture Seal is a high-performance, two-component, water-based epoxy that chemically cures to form a waterproof vapour barrier. It is hydrostatic pressure resistant, can prevent rising damp, and is suitable for use as a primer over damp concrete and damp screeds prior to the application of various Sika waterproofing membranes. Its low VOC formulation makes it ideal for use in confined spaces.
Available through Protrade Warehouse, your authorised Sika distributor in Australia. Order online for Australia-wide delivery or click & collect from your nearest Sika warehouse.
Key Features & Advantages
- ✅ Excellent adhesion to damp substrates
- ✅ Primer and moisture barrier in one product
- ✅ Hydrostatic pressure resistant — prevents rising damp
- ✅ Convenient 1:1 mix ratio (Part A : Part B by volume)
- ✅ Water-based, low VOC — ideal for confined spaces
- ✅ Non-flammable
- ✅ Easy water clean-up
- ✅ Easy to apply
Typical Applications
- Waterproofing and priming of damp or green screeds
- Waterproofing and priming of damp or green concrete
- Rendered brickwork, rendered blockwork, fibrous cement sheeting
- Negative pressure waterproofing applications
- Primer prior to application of Sika waterproofing membranes
- Moisture vapour barrier coating for green screeds and concrete (positive and negative applications)
Product Information
| Kit Size: | 20L (Part A: 10L + Part B: 10L) |
| Composition: | Water-based epoxy |
| Density: | 1.35 kg per Litre |
| Solid Content by Volume: | ~50% |
| Shelf Life: | 12 months from date of manufacture (original sealed containers) |
| Storage Conditions: | Dry, weatherproof environment, protected from direct sunlight, +10°C to +30°C |
Application Information
| Mixing Ratio: | 1:1 by volume (Part A : Part B) |
| Consumption — Moisture Barrier : | Minimum 2 coats at 3m² per Litre per coat |
| Consumption — Primer: | 1 coat at 10m² per Litre per coat |
| Layer Thickness — Moisture Barrier: | 250–300 micron wet film thickness per coat (2 coats required) |
| Layer Thickness — Primer: | 100 micron wet film thickness (1 coat required) |
| Relative Air Humidity: | < 85% |
| Pot Life: | 90 min @ 25°C / 45 min @ 35°C |
| Full Cure: | 7 days |
| Overcoating Window: | Minimum 6 hours, maximum 48 hours. If exceeded, apply a further coat of Sikalastic® Moisture Seal to reactivate. |
| Substrate Temperature: | +10°C to +35°C |
Limitations
- Must not be applied directly over protective coatings
- Must not be applied if raining or rain is imminent
- Not recommended for metal surfaces (corrosion risk)
- Must cure for a minimum of 72 hours prior to full immersion or water testing
- Not suitable as a trafficable, exposed, or UV-stable coating
- Not recommended as an efflorescence barrier for sand cement screeds or render, and not suitable to be tiled over
- Cure time is affected by surface temperature, ambient temperature, and relative humidity
- Discard any material that has exceeded pot life or working time
- Provide adequate ventilation in enclosed areas
- Contact Sika Technical Service to confirm membrane compatibility before use
Delivery & Collection
As an authorised Sika distributor, Protrade Warehouse offers two convenient fulfilment options:
- 🚚 Australia-Wide Delivery — We ship Sikalastic® Moisture Seal to all major cities and regional areas across Australia including Sydney, Melbourne, Brisbane, Perth, Adelaide, and beyond.
- 🏭 Click & Collect — Collect your order from your nearest Sika warehouse. Contact us after ordering to arrange your preferred collection point.
Explore the Full Sika Range at Protrade Warehouse
Sikalastic Moisture Seal is the ideal primer and moisture barrier before applying a complete Sika waterproofing or floor coating system. Pair it with products from our Sika collections:
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.
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