Concrete and Mortar 
Exterior Waterproofing 
Professional Sealants 
Roof Waterproofing 
Substructure Waterproofing 
Tiling and Grouting 
Water Tanks and Other Areas 
Wet Areas 
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| PROPERTIES | STANDARD | RESULTS |
|---|---|---|
| Appearance | Visual | Translucent |
| Density at @ 25°C, gm/cc | In House | Approx. 0.95 ± 0.02 |
| Mixing Ratio (Resin Part A: Hardener Part B, by Weight ). | 1:0.6 | |
| Pot Life at 30°C | Visual | 60 min. |
| Tack Free Time at 30°C | Visual | Approx. 180 min |
| Hard Dry Pullout Strength after mixing (N/mm2) | In House | >1 |
| Mix Viscosity, cps @25°C after 2 min | In House | Approx. 165 |
- Primer for concrete surfaces
FAQ
What is Trubuild Primesure EPMI?
Trubuild Primesure EPMI is a two-component, moisture-insensitive epoxy primer designed for priming concrete and masonry surfaces prior to the application of epoxy or polyurethane coatings, toppings, and repair mortars.
What are the key features of Trubuild Primesure EPMI?
Trubuild Primesure EPMI is a low viscosity, penetrating primer with excellent adhesion to damp or dry substrates. It consolidates the surface, enhances bonding, and acts as a temporary moisture barrier. It is also resistant to osmosis and hydrostatic pressure.
Why is an epoxy primer like Trubuild Primesure EPMI used?
Epoxy primers like Trubuild Primesure EPMI are used to improve the adhesion and compatibility between the substrate and subsequent coatings or toppings. They penetrate and seal the surface, reduce pinholing, and provide a sound base for overlay systems.
What surfaces can Trubuild Primesure EPMI be applied on?
Trubuild Primesure EPMI can be applied on concrete, masonry, cement screed, and other cementitious substrates. It is suitable for both interior and exterior applications, including floors, walls, tanks, bridges, and parking decks.
Can Trubuild Primesure EPMI be applied on damp surfaces?
Yes, Trubuild Primesure EPMI is moisture-tolerant and can be applied on damp or green concrete surfaces without standing water. This makes it ideal for fast-track projects or when the substrate moisture content is high.
How is Trubuild Primesure EPMI applied?
The two components of Trubuild Primesure EPMI are mixed in the specified ratio and applied by brush, roller, or airless spray. A single coat is usually sufficient, but a second coat may be required on very porous or absorbent surfaces.
What is the coverage rate of Trubuild Primesure EPMI?
The coverage rate of Trubuild Primesure EPMI depends on the substrate porosity and roughness. On average, it covers 5-7 m²/L on smooth, dense surfaces and 3-5 m²/L on rough or porous surfaces.
How long does Trubuild Primesure EPMI take to cure?
Trubuild Primesure EPMI is touch-dry in 6-8 hours and can be overcoated in 12-24 hours at 30°C. Full cure is achieved in 7 days. Curing time will be longer at lower temperatures and shorter at higher temperatures.
How long can Trubuild Primesure EPMI be overcoated?
Trubuild Primesure EPMI should be overcoated within 24-48 hours of application for optimal intercoat adhesion. If the recoat window is exceeded, the primed surface should be lightly abraded or re-primed before applying the next coat.
What precautions should be taken while using Trubuild Primesure EPMI?
Ensure adequate ventilation during application and curing. Wear protective gloves, goggles, and clothing. Avoid contact with skin and eyes. Do not apply below 10°C or above 40°C. Clean tools and equipment with solvent immediately after use.
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