EpiMax 777UHD Clear High Performance Seal Coat System
EpiMax 777UHD Clear High Performance Seal Coat System is a two component water based polyurethane coating designed to provide long-term protection to internal concrete floors.
It is designed as a clear, scuff-resistant protection system for ground concrete floors and can also be used as a clear seal coat over other EpiMax clear or solid-colour flooring systems. The coating helps protect concrete from staining and damage caused by spills and everyday substances.
EpiMax 777UHD is available as a clear hardening system in gloss and matt finishes. It can be applied by roller or airless spray and provides good adhesion, excellent scuff resistance and excellent durability.
Key Features and Benefits
- Two component water based polyurethane coating.
- Clear gloss or matt finish.
- Excellent scuff resistance.
- Excellent durability.
- Good adhesion.
- Good stain resistance.
- Water based formulation.
- Non-yellowing behind glass.
- Hazmat free and non-flammable.
- Meets the GBCA Low VOC standard.
- Meets BCA CRF Fire standard.
- Can be applied by roller or airless spray.
Where Can EpiMax 777UHD Clear High Performance Seal Coat System Be Used?
EpiMax 777UHD is designed for internal retail, commercial, industrial and residential flooring applications.
- Grind and seal applications
- Honed concrete sealing
- Polished concrete overlay sealing
- Self-levelling floor topping sealing
- Decorative cement micro topping sealing
- Clear seal coat over EpiMax clear flooring systems
- Clear seal coat over EpiMax solid-colour flooring systems
EpiMax 777UHD is intended for internal applications only and is not suitable for garages, car parks or automotive showrooms.
Coverage and Kit Sizes
| Product | Pack Size | Estimating Coverage |
|---|---|---|
| EpiMax 777 Interprime Clear Prime Coat System | 14 litres | Approximately 140 m² per coat |
| EpiMax 777UHD Clear Seal Coat System | 9 litres | Approximately 90 m² per coat |
| EpiMax 777UHD Clear Seal Coat System | 18 litres | Approximately 180 m² per coat |
The typical application rate for EpiMax 777UHD is 10–12 m² per litre per coat.
Application of EpiMax 777UHD Clear High Performance Seal Coat System
- Ensure the prepared surface is clean, dry and free from contamination.
- Review the sub-floor area and calculate the required volume of mixed material for the area.
- Use a slow-speed mechanical mixer at approximately 400 rpm.
- Add Part B to Part A.
- Mix for a minimum of 3 minutes.
- Apply evenly at 10–12 m² per litre.
- Apply by roller or airless spray.
When a matt finish is required, the first coat should be gloss. When using the matt finish, premix Part A thoroughly to ensure the matting agent is evenly dispersed and help avoid variations in the finish.
Up to 20% potable water can be used to adjust the viscosity of the first coat as required.
Allow the coating to cure for 7 days before subjecting it to full exposure.
Mixing Instructions
- Use a slow-speed mechanical mixer at approximately 400 rpm.
- Add EpiMax 777UHD Part B to EpiMax 777UHD Part A.
- Mix for a minimum of 3 minutes.
- For the first coat, use up to 20% potable water as required to adjust viscosity.
- When using the matt finish, thoroughly premix Part A to evenly disperse the matting agent.
The hardening mechanism occurs in two stages. First, the contained water evaporates, followed by chemical hardening. Good airflow assists the water evaporation stage.
The work time may be difficult to determine visually, so always keep track of the actual mixing and application time. Discard unused material when the 60-minute work time at 25°C has been exceeded.
Concrete Surface Preparation
- Concrete should be at least 28 days old.
- Ensure the concrete is clean and dry.
- Remove additives, curing agents, oils and other contamination.
- Prepare the surface as necessary by professional diamond grinding.
- Ensure the surface profile exceeds CSP 2.
- Allow wet surfaces to dry before application.
- Always confirm that surface preparation is adequate.
Ground Concrete Applications
Ground concrete should be prepared using diamond-segmented abrasives to achieve the required degree of grind and smoothness.
EpiMax 777UHD should be used on concrete surfaces with a finish below the 120 grit metal-bonded diamond level. Film-forming coatings require a degree of surface profile and penetration to adequately bond to the concrete surface.
For ground concrete applications:
- Prepare the concrete surface to the required profile.
- Allow the surface to dry if wet.
- Consider the site's slip resistance requirements.
- Prime using EpiMax 777 Interprime or EpiMax 777UHD Gloss diluted with 20% potable water.
- Alternatively, use EpiMax 999WB as the prime coat.
- When a matt finish is required, the first coat should be EpiMax 777 Interprime or EpiMax 777UHD Gloss.
- Apply the second coat of EpiMax 777UHD at 10–12 m² per litre.
- A third coat can be applied at 10–12 m² per litre to provide extended durability.
Over-Coating Existing EpiMax Coatings
When applying EpiMax 777UHD over previously applied EpiMax coatings, ensure the existing coating is clean, dry and free from contamination and less than two days old.
Apply EpiMax 777UHD Clear in two coats at approximately 10 m² per litre.
Slip Resistance
Slip resistance can be enhanced by incorporating suitable non-slip media into the first or second coat.
EpiMax 777UHD can meet HB198 P3 with suitable media as stated in the technical information.
Drying and Cure Times
- Work time: 60 minutes at 25°C.
- Recoat window: 6–48 hours under standard conditions.
- Full cure: 7 days.
Allow the coating to cure for 7 days before subjecting it to full exposure.
Application Conditions
- Internal applications only.
- Apply in well-ventilated areas.
- Avoid application when relative humidity is above 80%.
- Avoid application when temperature is below 12°C.
- Good airflow assists the water evaporation stage of curing.
- Higher temperatures and increased airflow decrease wet edge times.
Packaging
- EpiMax 777UHD Clear Gloss and Matt are available as clear stock lines.
- Available in 9 litre and 18 litre packs.
- Each pack includes Part A and Part B.
- Components are pre-packed in the correct proportions for use.
TECHNICAL SPECIFICATIONS
| Specification | Technical Data |
|---|---|
| Product type | Two component water based polyurethane coating |
| Finish | Clear gloss or matt |
| Mix ratio | 4 volumes Part A : 1 volume Part B |
| Typical application rate | 10–12 m² per litre |
| Volume solids | 45–50%, varying with water addition |
| Work time | 60 minutes at 25°C |
| Recoat window | 6–48 hours under standard conditions |
| Full cure | 7 days |
| Pack sizes | 9 litres and 18 litres |
| Shelf life | 12 months |
| Application methods | Roller or airless spray |
| VOC standard | Meets GBCA Low VOC standard |
| Slip resistance | Meets HB198 P3 with suitable media |
| Fire standard | Meets BCA CRF Fire standard |
Important: Always read the current manufacturer's Technical Data Sheet before mixing, surface preparation or application.
Why Buy EpiMax 777UHD Clear from Epoxy Warehouse?
Epoxy Warehouse is a supplier of trusted Australian brands for industrial, commercial and construction coating applications.
The range includes products from established brands including Sika, EpiMax, EPIREZ, Flowcrete, Chemforce and Crommelin, giving customers access to a broad selection of coating and surface protection systems.
Epoxy Warehouse supplies epoxy, polyurethane and polyaspartic coating products for a range of project requirements.
