EpiMax 340 WVB Water Based Epoxy Membrane
EpiMax 340 WVB Water Based Epoxy Membrane is a water based epoxy coating designed to provide a low water vapour transmission membrane for rigid cementitious surfaces in building and construction projects.
It can be used as a barrier coating over new or damp concrete and as a waterproofing membrane to help prevent water seepage or dampness penetration. EpiMax 340 WVB provides excellent adhesion to prepared inorganic surfaces and can be applied by roller or airless spray.
The water based formulation has negligible odour and toxicity and is described as odourless and food safe. It is also hazmat free and non-flammable, with VOC content below 10 g/L.
Key Features and Benefits
- Water based epoxy membrane.
- Low water vapour transmission.
- Excellent adhesion to prepared inorganic surfaces.
- Suitable as a moisture barrier on damp walls and floors.
- Can be used over new or damp concrete.
- Water based formulation with negligible odour and toxicity.
- Hazmat free and non-flammable.
- Convenient 1:1 mix ratio.
- Suitable for roller or airless spray application.
- VOC content below 10 g/L.
Where Can EpiMax 340 WVB Water Based Epoxy Membrane Be Used?
EpiMax 340 WVB is designed for a range of building and construction applications involving rigid cementitious and inorganic surfaces.
- In situ concrete
- Brick, block and stone work
- Retaining walls
- Compressed sheet systems
- Pre-cast panels
- Tilt-up panels
- Moisture barriers on damp walls and floors
Coverage and Kit Sizes
| Pack Size | Estimating Coverage |
|---|---|
| 20 litre pack | Approximately 60 m² |
The stated estimating data is based on a 20 litre pack covering approximately 60 m².
Application of EpiMax 340 WVB Water Based Epoxy Membrane
EpiMax 340 WVB can be applied by roller or airless spray.
- Review the application area in advance.
- Calculate a fixed volume of mixed material for a defined area to help maintain the correct application rate.
- Use a slow-speed mechanical mixer at approximately 400 rpm.
- Mix the Activator and Base thoroughly before application.
- Apply to the prepared surface by roller or airless spray.
The hardening mechanism occurs in two stages. First, the contained water evaporates, followed by chemical hardening. Consistent airflow assists the water evaporation stage.
Mixing Instructions
- Use the supplied Activator and Base components in their pre-packed proportions.
- Combine 1 volume of Activator with 1 volume of Base.
- Use a slow-speed mechanical mixer at approximately 400 rpm.
- Ensure thorough mixing before application.
Surface Preparation
- Concrete should be at least 28 days old.
- Ensure the substrate is clean, dry and free from additives, curing agents and oils.
- Prepare the sub-floor by professional diamond grinding to expose firmly adhered aggregate.
- All surfaces must be structurally sound.
- Remove existing coatings, adhesives and efflorescence.
- Fill gaps with EpiMax 575 Structural Adhesive System first.
EpiMax 340 WVB can also be used as a barrier coating over new or damp concrete and as a moisture barrier for damp walls and floors.
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Drying and Cure Times
- Work time: 2 hours at 25°C.
- Recoat window: 4–6 hours at 25°C, depending on airflow.
- Full cure: 7 days at 25°C.
Moisture and Application Conditions
- Relative humidity should be below 85% during application.
- Consistent airflow assists the water evaporation stage of hardening.
- Application and curing conditions can affect the water evaporation stage.
Water Vapour Transmission
EpiMax 340 WVB has a stated water vapour transmission rate of 11.3 g/m²/24 hours.
The product is designed as a low water vapour transmission membrane and can be used as a barrier coating to help prevent water seepage or dampness penetration..
Storage and Shelf Life
- Shelf life: 12 months.
- Available in 20 litre packs containing Activator and Base.
- Components are pre-packed in the correct proportions for use.
Packaging
EpiMax 340 WVB is supplied in 20 litre packs containing Activator and Base. The components are pre-packed in the correct proportions for use.
TECHNICAL SPECIFICATIONS
| Specification | Technical Data |
|---|---|
| Product type | Water based epoxy membrane |
| Mix ratio | 1 volume Activator : 1 volume Base |
| Coverage | Approximately 60 m² per 20 litre pack |
| Work time | 2 hours at 25°C |
| Recoat window | 4–6 hours at 25°C, depending on airflow |
| Full cure | 7 days at 25°C |
| Volume solids | 40% |
| Water vapour transmission | 11.3 g/m²/24 hours |
| VOC | <10.0 g/L |
| Application methods | Roller or airless spray |
| Recommended mixer | Slow-speed mechanical mixer at approximately 400 rpm |
| Pack size | 20 litres |
| Shelf life | 12 months |
| Relative humidity | Below 85% |
Why Buy EpiMax 340 WVB Water Based Epoxy Membrane from Epoxy Warehouse?
Epoxy Warehouse is a trusted Australian supplier of epoxy coatings for industrial and commercial applications. The range also includes polyurethane and polyaspartic coatings for different coating requirements.
Epoxy Warehouse is an authorised distributor of EPIMAX products and offers Australia-wide delivery. The business has been trusted by Australian customers and coating professionals over several years.
For customers looking for established epoxy coating systems for building, construction and commercial applications, Epoxy Warehouse provides access to a specialist range of coating products.
Important: Always read the current manufacturer's Technical Data Sheet before mixing, surface preparation or application.
