For concrete, brick, mortar, and natural stone structures vulnerable to water ingress, dampness, and surface dusting, EP Waterproofing System permanently seals and hardens masonry from the inside. Instead of forming a temporary surface film that can peel or wear away, this translucent, inorganic liquid penetrates deep into the substrate, initiating a progressive chemical reaction that solidifies the component parts of the masonry into a single, dense mass.
EP Waterproofing System uses the existing free lime and alkali within the masonry to drive its curing process. By reacting internally, it blocks the gel pore system to prevent water, oxygen, and contaminants like chlorides from migrating through the substrate. This internal chemical barrier stops the upward migration of ground moisture and vapour emission through concrete slabs, while maintaining the natural passivation layer on embedded reinforcing steel to inhibit corrosion.
This reaction also neutralises free lime and alkali, eliminating the primary cause of paint saponification. By stopping these highly alkaline salts from leaching into surface coatings, it prevents the blistering, peeling, and cracking of subsequent paint systems, extending their service life on masonry surfaces. It does not contain solvents or oils, does not aerate, and will not damage adjacent glass, tile, or aluminium during application.
EP Waterproofing System is suitable for interior, exterior, above-grade, and below-grade applications across industrial, commercial, and residential projects, including:
Ensure all surfaces are clean, dry, and free of dirt, oil, grease, rust, mildew, and loose paint. Clean heavily soiled areas first with EP Cleaning Products, rinse thoroughly, and allow to dry completely.
Apply the product exactly as it comes from the container; do not dilute or mix with other chemicals. Apply using a low-pressure sprayer (such as a backpack sprayer) operated at no more than 20 Psi to ensure even distribution and prevent overspray. Brush, roller, mop, or flushing methods may be used where spraying is not practical, provided the surface is completely saturated. Once the surface dries, the area can be opened to reasonable foot traffic. Allow several days for complete chemical penetration and curing before applying any paints or surface floor coverings.
It is not a film-forming coating. The treatment penetrates the substrate and reacts within the gel pore system, densifying the matrix to waterproof from within, so it cannot peel or wear away like a surface film.
Once the substrate is dry after application you may paint; on plastered substrates allow 12–24 hours penetration and drying before finishing. Full cure progresses over several days.
Yes. Shotcrete’s higher cement content increases reaction potential. Expect slightly higher uptake (lower m²/L) due to absorption; spray to saturation and allow to dry.
Do not apply over substrates previously treated with silicone, siloxane or solvent-based repellents, or where the product won’t absorb. For porous concrete block walls, specify EP™ Concrete Block Sealer.
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Basements/retaining walls (negative-side) | Internal densification reduces water ingress; negative hydrostatic resistance | Waterproofers, Builders |
| New toppings over old slabs | Controls absorption for improved curing and bond | Builders, Concreters |
| Rendered/painted façades | Helps prevent saponification; longer coating life | Painters, Builders |
| Shotcrete linings | Enhanced reaction with high cement content | Waterproofers, Civil |
Clean substrates to remove dust, oils and contamination; rinse and allow to dry. Confirm no prior silicone/siloxane/solvent-based treatments.
Use EP™ Cleaning Products as needed, rinse thoroughly and ensure the surface is dry before treatment.
Apply when air/surface >10 °C; maintain >8 °C for 24 h. Keep materials ideally 18–35 °C.
Apply by low-pressure spray (back-pack or equivalent) at ~20 psi to saturate the surface uniformly.
Typical rate ~5–7 m²/L on dense substrates; shotcrete may require higher uptake due to absorption.
Allow to dry before foot traffic or finishing. On plaster, allow 12–24 h penetration before coating.
Wear safety glasses and suitable gloves during application. Avoid contact with eyes and prolonged skin exposure.
Use with adequate ventilation. For interiors, ensure air movement during and after spray until surfaces are dry.
Non-flammable. Keep containers closed when not in use. Prevent release into drains and waterways.
Seek medical attention immediately in all cases of serious exposure.
Remove dust, laitance, oil/grease and contaminants. Clean with EP™ Cleaning Products, rinse and allow to dry. Ensure surface/air >10 °C and remains >8 °C for 24 h.
Apply by low-pressure spray (~20 psi) to saturation at ~5–7 m²/L. Allow to dry before traffic/finishes.
EP™ Cleaning Products (prep only)Rinse to flush dust on new work; dry completely. Treat at ~1 L/4–5 m² from the top down; allow 12–24 h penetration.
Paint once dry; expect full cure in approximately 4–5 days for plastered areas.
—Ensure clean, dry and free of repellents. Assess pore size; some quick-stage block has oversized voids.
Use EP™ Concrete Block Sealer where pore/void structure is too large for standard penetration.
EP™ Concrete Block Sealer| Property | Value |
|---|---|
| Base Chemistry | Polyester polymer penetrating treatment |
| Appearance | Translucent liquid |
| Density | 1.34 g/cm³ @ 20°C |
| pH Value | ≈ 6.0 |
| Initial Cure | Initial reaction ~12–14 h, Full cure ~6–7 days |
| Trafficable Time | Allow to dry before foot traffic and painting; Plaster: 12–24 h before finishing |
| Application Temperature | 18°C to 35°C |
| Service Temperature | 100°C (water) |
| Storage Temperature | 0°C (water) |
| Water Ratio | Dilutable |
| Coverage Rate | 5–7 m²/L (typical), 4–5 m²/L on plaster, Higher uptake on shotcrete |
| Substrate Compatibility | Not for use over silicone/siloxane/solvent-based repellents; Does not plug holes/cracks |
| Standards | ASTM C31 (compressive strength), ASTM C672 (chloride penetration), ASTM 413 (water absorption), AASHTO T259-89 (chloride ion), ASTM C67 §10 (efflorescence), BS 1881 Part 122 (water absorption), AS 1012.21 (density & absorption) |
| Resistance Testing | Negative-side test to 4.137 MPa (no visible failure) |
| Packaging | 5 L, 20 L |
| Shelf Life | ≥12 months (sealed, Protected storage 5°C to 38°C, Avoid direct sunlight) |
| Storage Conditions | Keep in closed containers, Protected storage 5°C to 38°C |
Here are some common examples on where Adheseal EP Waterproofing System used by our customers.
