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Adhesion failure on concrete or metal can derail a project. Sika Primer-3 N ensures a reliable bond for your Sikaflex, SikaHyflex, SikaBond, and Sikasil sealants and adhesives on these challenging substrates. Its transparent, solvent-based epoxy formulation provides a critical short flash-off time. This means faster progress without compromising long-term adhesion for porous surfaces and metal.
Sika Primer-3 N is engineered to bridge the gap between demanding substrates and high-performance Sika sealants and adhesives. It promotes adhesion on porous materials like concrete and non-porous metals, preventing the common regret of poor or delayed bond development. Its 1-component, solvent-based epoxy resin composition is specifically designed for these pairings, offering a quick flash-off to maintain project schedules without sacrificing bond integrity.
The minimum 30-minute flash-off time allows for rapid follow-up with your Sika sealant or adhesive, ensuring efficient workflow on site. This speed is critical for maintaining project timelines without compromising the bond. With a yield of up to 8 m² per litre on non-porous substrates, Sika Primer-3 N offers efficient coverage. This translates to fewer containers and reduced material costs across larger projects.
Sika Primer-3 N applies easily with a clean brush or roller. Only a single coat is required to achieve effective adhesion promotion. After application, observe the minimum 30-minute flash-off period before proceeding with your chosen Sika sealant or adhesive. It is critical to reseal the container immediately after each use. Any primer that has gelled or separated must be discarded, and opened containers must be used within one month for optimal performance.
Sika Primer-3 N serves as the crucial first step in any Sika sealing or bonding system where concrete or metal are present. It establishes the foundational bond between the substrate and the subsequent Sikaflex, SikaHyflex, SikaBond, or Sikasil product. This ensures the full performance capabilities of the sealant or adhesive are achieved, particularly in environments subject to movement, weather exposure, or high traffic. Its proper application following thorough substrate preparation directly contributes to the system's long-term durability and resistance to premature bond failure.
For detailed information on safe handling, storage, and disposal, always refer to the most recent Safety Data Sheet (SDS). This document provides critical health and safety information for chemical products.
Sika Primer-3 N is specifically designed to enhance adhesion for Sikaflex, SikaHyflex, SikaBond, and Sikasil products on porous substrates like concrete and various metals. It prepares the surface for a reliable bond.
No, Sika Primer-3 N is formulated for specific Sika sealants and adhesives only. Using it with non-Sika products or unapproved ranges may lead to compromised adhesion and performance failures.
The minimum flash-off time is 30 minutes, with a maximum of 8 hours. This window is critical for solvent evaporation before applying the sealant or adhesive, ensuring proper adhesion development.
Store Sika Primer-3 N in dry conditions, protected from direct sunlight, at temperatures between +5 °C and +25 °C. Once opened, use the product within one month and discard any gelled or separated material.
| Application | Key benefit | Primary trades |
|---|---|---|
| Prepping concrete for Sikaflex joint sealants | Ensures reliable, long-term adhesion on porous concrete surfaces, preventing common sealant failures. | Concrete placers, Commercial builders, Sealant applicators |
| Priming metal for SikaBond structural adhesives | Creates an optimal bonding surface on metals, enhancing the system's strength and durability. | Metal fabricators, Glaziers, Installers |
| Surface preparation for SikaHyflex facade sealants | Improves bond integrity on diverse construction substrates, contributing to weatherproofing performance and reducing callbacks. | Facade contractors, Waterproofers |
Danger: Highly flammable liquid and vapour. Causes serious eye irritation. May cause drowsiness or dizziness. Harmful to aquatic life with long lasting effects.
In cases of inadequate ventilation, wear respiratory protection with an organic vapour filter (Type A). Use chemical-resistant, impervious gloves, preferably Butyl rubber or nitrile rubber. Wear safety glasses for eye protection and protective cotton clothing for skin and body protection.
Ensure adequate ventilation during application. If ventilation is insufficient, wear appropriate respiratory protection. Avoid breathing vapours or spray mist.
Store in the original container in a cool, well-ventilated, locked-up place. Keep containers tightly closed and upright, protected from direct sunlight, at temperatures between +5 °C and +25 °C. Dispose of product waste through a licensed waste management company, ensuring it does not enter drains, water courses, or the soil. Contaminated packaging should be disposed of as unused product; do not re-use empty containers.
Proper substrate preparation and priming are essential for achieving durable adhesion with Sika sealants and adhesives. This guide outlines key requirements for compatible surfaces.
Surface prep: The surface must be clean, dry, sound, and homogeneous. Remove all oils, grease, dust, and loose or friable particles. Ensure cement laitance is fully removed.
Primer: Required. Apply a single, even coat using a clean brush or roller.
Surface prep: Ensure the metal surface is clean, dry, sound, and free from oils, grease, dust, and any loose material. Prepare the surface to achieve optimal adhesion.
Primer: Required. Apply a single, even coat with a clean brush or roller.
| Property | Value |
|---|---|
| Composition | 1-component, solvent-based epoxy resin compound |
| Colour | Transparent |
| Density | 1.00 kg/l (approx.) |
| Viscosity | 10 mPas (approx.) |
| Flash Point | -4 °C |
| Upper Explosion Limit | 7 % (V) |
| Lower Explosion Limit | 1 % (V) |
| Vapour Pressure | 99.9915 hPa |
| Auto-ignition Temperature | 425 °C |
| Dynamic Viscosity | 10 mPa.s (at 20 °C) |
| Kinematic Viscosity | < 20.5 mm2/s (at 40 °C) |
| Ambient Air Temperature | +5 °C to +40 °C |
| Substrate Temperature | +5 °C to +40 °C |
| Flash-off Time Minimum | 30 minutes |
| Flash-off Time Maximum | 8 hours |
| Yield per Litre on Porous Substrates | 5 m² |
| Linear Meters per Litre on Porous Substrates | 250 m |
| Yield per Litre on Non-Porous Substrates | 8 m² |
| Linear Meters per Litre on Non-Porous Substrates | 400 m |
| Shelf Life | 9 months |
| Storage Temperature | +5 °C to +25 °C |
| VOC Content | 66.6% w/w |
Here are some common examples on where Sika Primer-3 N Epoxy Primer used by our customers.
Caulking
Preparing concrete expansion or control joints for Sikaflex, SikaHyflex, or SikaBond sealant application.
This solvent-based epoxy primer ensures strong, water-repellent adhesion for Sika sealants on porous concrete, enabling efficient, reliable joint sealing.
Glazing
Priming metal window frames, architectural panels, or sheet metal joints for Sikasil, Sikaflex, or SikaBond adhesion.
Delivers reliable adhesion for Sika sealants and adhesives on metal, featuring a short flash-off time for quick installation turnaround.
Glazing
Priming metal window frames, façade panels, or structural elements before applying perimeter sealants.
Its rapid solvent-based action prepares non-porous metals, ensuring reliable, water-repellent adhesion for Sikaflex sealants on exposed surfaces.
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