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E P Waterproofing System™: A Technical Overview
E P Waterproofing System™ is a penetrating, non-film-forming polyester-polymer treatment that reacts within the masonry matrix to densify the gel pore system. It neutralises free lime/alkali, reduces porosity and waterproofs from within, so it won’t peel or wear off like surface sealers. Suitable inside or out, new or old, and above or below grade on concrete, brick, render and most natural stone. Typical spray application rate is ~5–7 m²/L. Initial chemical reaction occurs in roughly 12–14 hours, with full cure in 6–7 days. Substrates may be painted once dry.
Core Features & Specifications
- Penetrating chemistry — reacts within the matrix; not a surface coating.
- Waterproofs & densifies — reduces absorption; assists with dusting/fretting control.
- Improves bond — supports new-to-old concrete interfaces by controlling rapid moisture loss.
- Paint & floor-covering friendly — helps prevent saponification, blistering and peeling.
- Negative hydrostatic resistance — tested to 60 psi with no visible failure (GHD method).
- Chemical profile — translucent liquid, SG ~1.34 @ 20 °C; dilutable with water; non-flammable, non-caustic, non-toxic.
- Coverage — typically 5–7 m²/L (shotcrete may require higher take-up).
- Packaging — 5 L, 20 L, 200 L; shelf life minimum 12 months in protected storage (5–38 °C).
- Application window — apply when surface/air >10 °C and keep >8 °C for 24 h; materials ideally 18–35 °C.
The E P Waterproofing System™ Advantage
- Permanent, in-depth waterproofing that won’t peel like films — fewer callbacks.
- Spray application at low pressure (~20 psi) — fast coverage on large areas.
- Supports long paint life by preventing alkali attack on coatings.
- Compatible with interior/exterior, new/old, above/below grade masonry.
- Backed by recognised test methods (ASTM/BS/AASHTO) and local hydrostatic testing.
Proactive Troubleshooting
Scenario: Applying over previous silicone/siloxane/solvent-based treatments
Potential Outcome: Penetration is blocked; treatment won’t absorb, leaving areas unprotected.
Adheseal Best Practice: Confirm history of prior treatments. If water beading indicates repellents, do not apply. Where block walls require pore closure, use the dedicated EP™ Concrete Block Sealer.
Scenario: Damp, dirty or unprepared substrates
Potential Outcome: Reduced penetration and incomplete reaction, risking uneven performance.
Adheseal Best Practice: Clean with EP™ Cleaning Products, rinse thoroughly and allow to dry. Apply by low-pressure spray to saturate the surface uniformly.
Applications in Practice: Trade Scenarios
For Waterproofers (Specifier/Engineer): Basement walls subject to moisture ingress
The Professional's Challenge
Managing negative-side moisture where access for external membranes is impractical, while maintaining coating compatibility for finishes.
The Adheseal Solution
Apply E P Waterproofing System™ by low-pressure spray at ~5–7 m²/L to saturation. The internal densification reduces permeability and supports negative hydrostatic resistance (tested to 60 psi). Allow dry, then proceed with paint/lining per spec.
Best Practice Note
Verify substrate is clean and dry; maintain ambient >10 °C during application and >8 °C for 24 h. Plan finishing after the substrate is dry; full cure typically 6–7 days.
For Builders (On-site Applicator): New-to-old concrete interface
The Professional's Challenge
Preventing rapid moisture loss from fresh toppings into old slabs, which can compromise curing and bond.
The Adheseal Solution
Treat the existing slab with E P Waterproofing System™ to densify and control absorption before placing the new layer. This supports proper curing and improves bond at the interface.
Best Practice Note
Spray to even saturation and allow to dry before placing the new concrete. Always confirm absorption; if the surface won’t take product, reassess suitability.
For Painters (On-site Applicator): Alkali burn and coating failure on render
The Professional's Challenge
Preventing saponification, blistering and peeling on alkaline cementitious substrates.
The Adheseal Solution
Treat render with E P Waterproofing System™ to neutralise free lime/alkali and reduce moisture ingress. Once dry, proceed with coating systems as specified.
Best Practice Note
For new plastering, rinse to remove dust, allow to dry, then apply at ~1 L/4–5 m². Allow 12–24 h penetration before finishing; full cure in 4–5 days on plastered areas.
Frequently Asked Questions
Is E P Waterproofing System™ a surface sealer or coating?
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.
When can I paint after treatment?
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.
Can I use it on shotcrete?
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.
Any conditions where it shouldn’t be used?
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.
Applications & Benefits
| 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 |
Applying E P Waterproofing System™: Enhanced Protocols & Best Practices
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Surface Preparation
Clean substrates to remove dust, oils and contamination; rinse and allow to dry. Confirm no prior silicone/siloxane/solvent-based treatments.
Cleaning
Use EP™ Cleaning Products as needed, rinse thoroughly and ensure the surface is dry before treatment.
Environmental Checks
Apply when air/surface >10 °C; maintain >8 °C for 24 h. Keep materials ideally 18–35 °C.
Timing: Plan application early in the day to avoid condensation and to maintain temperature thresholds.Pro Tip: A simple water drop test can indicate prior repellents; if water beads strongly, reassess suitability. -
Application
Apply by low-pressure spray (back-pack or equivalent) at ~20 psi to saturate the surface uniformly.
Coverage
Typical rate ~5–7 m²/L on dense substrates; shotcrete may require higher uptake due to absorption.
Finishes/Traffic
Allow to dry before foot traffic or finishing. On plaster, allow 12–24 h penetration before coating.
Timing: Initial reaction 12–14 h; full cure typically 6–7 days.Pro Tip: Apply from the highest point and work down to ensure even penetration and prevent runs on verticals.
Limitations & Safety
Product Limitations
Do not apply over substrates previously treated with silicone, siloxane or solvent-based repellents; if the product will not absorb, do not apply.
Does not plug holes or sizeable cracks. For highly porous concrete block retaining walls, use EP™ Concrete Block Sealer.
Apply in good weather with air/surface >10 °C; maintain >8 °C for 24 h after application. Store sealed containers at 5–38 °C; avoid direct sunlight.
Safety & Handling Requirements
Personal Protective Equipment
Wear safety glasses and suitable gloves during application. Avoid contact with eyes and prolonged skin exposure.
Ventilation Requirements
Use with adequate ventilation. For interiors, ensure air movement during and after spray until surfaces are dry.
Fire & Handling Precautions
Non-flammable. Keep containers closed when not in use. Prevent release into drains and waterways.
Emergency First Aid
Eyes:
Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do. Continue rinsing.
Skin:
Wash with soap and water. Seek advice if irritation persists.
Inhaled:
Move to fresh air and rest in a position comfortable for breathing.
Swallowed:
Rinse mouth. Do not induce vomiting. Seek medical attention.
Seek medical attention immediately in all cases of serious exposure.
E P Waterproofing System™ Application Guide
Concrete (new or existing)
Surface Preparation
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.
Primer Requirements
No primer typically required
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)Render/Plaster
Surface Preparation
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.
Primer Requirements
No primer typically required
Paint once dry; expect full cure in approximately 4–5 days for plastered areas.
—Concrete Block (retaining walls)
Surface Preparation
Ensure clean, dry and free of repellents. Assess pore size; some quick-stage block has oversized voids.
Primer Requirements
Dedicated sealer recommended
Use EP™ Concrete Block Sealer where pore/void structure is too large for standard penetration.
EP™ Concrete Block Sealer
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