About Fosroc Nitocote EP405 Epoxy Resin Coating Primers
Main uses
As a gas resistant waterproof coating, Nitocote EP405 is suitable for application to below ground retaining wall and foundation structures including construction joints to maintain waterproofing and ground gas protection continuity as part of a waterproofing and ground gas protection solution conforming to BS8102:2009 and BS8485:2015. It enables continuity of waterproofing and ground gas protection to be achieved in locations where the use of sheet membrane products is not feasible. It is compatible for use with the Proofex range of sheet membranes.
As a protective coating it is suitable for lining and waterproofing potable water retaining structures* and surfaces subject to contact with foodstuffs. The cured film is corrosion, chemical and abrasion resistant and is suitable for application to basements, tunnels, tanks, silos, reservoirs*, water treatment works*, breweries, dairies and meat and food processing plants. The cured film is non toxic and meets the requirements of BS 6920. (* See Limitations'.)
Advantages
- High build application
- Can be applied directly to mild steel and concrete
- Smooth, glossy, easy to clean surface
- Corrosion, chemical and abrasion resistant
- Can be applied to damp surfaces
- Waterproof
- Ground gas and water vapour barrier
Exceptional Adhesion and CoverageNitocote EP405 is engineered to enhance bonding on a range of surfaces, including concrete and metal. It penetrates substrate pores to maximize adhesion, while its excellent chemical resistance ensures long-term durability for industrial and construction environments. Users can expect comprehensive coverage and performance, making it a dependable primer for critical coating applications.
Optimal Use and Application ProcessThis primer is easy to mix and apply. Mix the base and hardener at the prescribed 3:1 weight ratio, ensuring a homogeneous blend. Apply the mixture evenly on prepared substrates using a brush or roller. With a pot life of approximately 45 minutes at 30C and a tack-free time of 4-6 hours, the primer allows for efficient project turnaround and timely topcoating.
FAQ's of Fosroc Nitocote EP405 Epoxy Resin Coating Primers:
Q: How should Fosroc Nitocote EP405 Epoxy Resin Coating Primer be mixed and applied?
A: To ensure optimal performance, mix the base and hardener components in a 3:1 weight ratio. Stir thoroughly until the mixture is homogeneous. Apply the primer to a clean, dry substrate using a brush or roller, making sure to cover the entire surface evenly.
Q: What types of substrates are suitable for Nitocote EP405 application?
A: Nitocote EP405 is specifically formulated for use on concrete, cementitious substrates, and metal (such as steel). It is ideal for priming these materials prior to applying subsequent epoxy coatings for increased adhesion and protection.
Q: When can the coated surface be touched or recoated after applying Nitocote EP405?
A: The primer becomes tack-free within 4 to 6 hours at 30C, allowing for the application of topcoats within this window. Full curing occurs after 7 days at 30C, at which point the primer achieves maximum strength and chemical resistance.
Q: What is the recommended coverage rate for this primer?
A: Nitocote EP405 typically covers 7-8 m2 per kilogram per coat, though actual coverage may vary depending on the texture and porosity of the substrate.
Q: Where should the product be stored for best shelf life?
A: The product should be stored in its original, unopened container in a dry area between 10C and 30C, protected from frost. Under these conditions, it has a shelf life of up to 12 months.
Q: What are the key benefits of using Nitocote EP405 as a primer?
A: Nitocote EP405 offers excellent adhesion, enhances chemical resistance, reduces pinholing, and ensures low permeability. It acts as a robust priming coat that greatly improves the performance and longevity of subsequent Fosroc epoxy coatings.