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ACTFLEX EP 250 is a two-part epoxy polyamide coating that provides effective protection against water infiltration, rising damp, efflorescence, and hydrostatic pressure. Approved for use with potable water, it meets AS4020:2005 and SS375-2001 standards. Suitable for concrete, masonry, and cementitious surfaces, it acts as a primer, sealer, and damp-proofing barrier. It also supports moisture-sensitive coatings and serves as a hydrostatic barrier for negative side surfaces. Non-flammable, low Odor, and compatible with green concrete, it enhances adhesion and structural integrity.
Waterproofs against hydrostatic pressure up to 250 kPa
Two-component water-based epoxy for concrete & masonry
Certified for potable water & meets green building standards
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ACTFLEX EP 250 Hydrostatic Epoxy Primer
4 LT
The Waterproofing Shop
22/872 Canterbury Road
Roselands NSW 2196
Australia
Engineered to perform in the most demanding environments.
Designed for permanent water immersion. Chlorine, salt & UV stable.
ACTFLEX 989 CWP
ACTFLEX 906
ACTFLEX FLEXTAPE
High performance negative pressure waterproofing for below ground structures.
ACTFLEX 989 CWP
ACTFLEX SUPERBOND
ACTFLEX MESHTAPE
Potable water safe. Ideal for concrete water tanks and reservoirs.
ACTFLEX 989
ACTFLEX 906
ACTFLEX FLEXTAPE
Correct application makes all the difference.
| Product Type | Two-component, water-based epoxy polyamide moisture barrier |
|---|---|
| Chemical Base | Water-based epoxy polyamide |
| Colour | Grey, semi-gloss finish (matt over time) |
| Solid Contents | 44% |
| Density | 1.25 g/cm³ |
| Pot Life | 2 hours @ 25°C; 1 hour @ 35°C |
| Tack Free / Touch Dry | 4 hours @ 25°C, 50% RH |
| Recoat Time | 4 hours min; up to 5 days max for tiling |
| Waterproof Time | 24 hours @ 25°C / 50% RH before recoating |
| Foot Traffic | 24 hours @ 25°C |
| Full Cure | 7 days @ 25°C, 50% RH |
| Application Temperature | 10°C–26°C |
| Service Temperature | –10°C to +65°C |
| Recommended Thickness | 150 µm DFT per coat; 300 µm DFT total (2 coats) |
| Coverage | 1.5 m²/L total for 2 coats @ 300 µm WFT per coat |
| Hydrostatic Pressure Resistance | Up to 250 kPa (25 m head of water) |
| Certifications | AS4020, SS375, potable water certified, Green Building Council compliant |
| Features | Non-flammable, low VOC, odourless, excellent chemical resistance |
| Shelf Life | 24 months |
Not classified as a trafficable membrane. Not UV resistant — must not be exposed to UV light. Ceases to cure below 10°C; curing is also adversely affected above 85% relative humidity. Confined areas require ventilation during the curing cycle. Tiling must commence within 5 days of cure; sand binding of the final wet coat required.
You will need:
ACTFLEX EP 250 Hydrostatic Epoxy Primer
4kg Kit
Total coverage: 0 m²
This is an estimate only. Add 10% for wastage.
| Product Type | Two-component, water-based epoxy polyamide moisture barrier |
| Chemical Base | Water-based epoxy polyamide |
| Colour | Grey, semi-gloss finish (matt over time) |
| Solid Contents | 44% |
| Density | 1.25 g/cm³ |
| Pot Life | 2 hours @ 25°C; 1 hour @ 35°C |
| Tack Free / Touch Dry | 4 hours @ 25°C, 50% RH |
| Recoat Time | 4 hours min; up to 5 days max for tiling |
| Waterproof Time | 24 hours @ 25°C / 50% RH before recoating |
| Foot Traffic | 24 hours @ 25°C |
| Full Cure | 7 days @ 25°C, 50% RH |
| Application Temperature | 10°C–26°C |
| Service Temperature | –10°C to +65°C |
| Recommended Thickness | 150 µm DFT per coat; 300 µm DFT total (2 coats) |
| Coverage | 1.5 m²/L total for 2 coats @ 300 µm WFT per coat |
| Hydrostatic Pressure Resistance | Up to 250 kPa (25 m head of water) |
| Certifications | AS4020, SS375, potable water certified, Green Building Council compliant |
| Features | Non-flammable, low VOC, odourless, excellent chemical resistance |
| Shelf Life | 24 months |
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Expert TechnicalEP 250 is a 2-part water-based epoxy polyamide used as both a primer/sealer and a hydrostatic damp-proof barrier. Approved for potable water tanks, basements, tunnels, and negative-side waterproofing on concrete and masonry substrates.
EP 250 withstands hydrostatic pressure up to 250 kPa - equivalent to 25 metres of water head. Apply two coats at 150 microns DFT each (300 microns wet film thickness total) for full hydrostatic performance.
Coverage is 1.5 m² per litre for two coats. Two-part mix with pot life of 2 hours at 25°C (1 hour at 35°C). Touch-dry in 4 hours, recoat 4 hours to 5 days, full cure 7 days.
EP 250 bonds to concrete (old, new, or green), masonry, and cementitious substrates. The water-based chemistry penetrates damp surfaces - useful for retrofit waterproofing where the structure can't be fully dried.
Yes. EP 250 is certified to AS4020 and SS375 for potable water contact - approved for drinking water tanks and water-treatment applications. Low VOC, non-flammable, odourless.
