When a critical bond or repair needs to set fast and hold strong, especially on vertical or overhead surfaces, Megapoxy PF provides a reliable solution. This rapid-set epoxy paste adhesive gives you the immediate adhesion and high strength required for on-the-spot fixes, minimising downtime and ensuring structural integrity without delay.

Why this product exists

Megapoxy PF was developed as a 'hardens-as-you-hold-it' solution for urgent, high-strength bonding and filling tasks. It excels in scenarios where immediate adhesion is paramount, such as emergency repairs to tanks, pipes, or machinery, and for essential structural bonding on demanding surfaces like concrete, metal, and natural stone. Its formulation ensures a robust, permanent bond that stands up to significant structural loads.

The numbers that matter

Megapoxy PF is built for speed and strength where it counts:

  • 7-minute set time at 25°C: This rapid setting allows for immediate handling and reduces the need for extensive bracing, making it ideal for vertical and overhead applications.
  • 70 MPa compressive strength: With a compressive strength superior to most concrete, this epoxy paste forms a load-bearing bond that strengthens the repaired element.
  • 16 MPa tensile bond strength to steel: This high tensile bond ensures exceptional adhesion to critical metal components, preventing delamination and failure under stress.
  • Non-sag consistency: Its creamy, easily workable texture prevents slumping on vertical surfaces or overhead applications, simplifying intricate repairs and structural bonding.

What it's like to use

Megapoxy PF is supplied as a two-part system with a simple 1:1 mix ratio by volume. With a work time of just 3 minutes at 25°C, it requires quick, thorough mixing before application. Its creamy, non-sag consistency ensures easy workability and placement, particularly on vertical or overhead surfaces. Thorough surface preparation is critical for optimal adhesion; concrete should be mechanically abraded or acid-etched and surface dry, while metals require grit blasting or mechanical abrasion to a bright finish, followed by degreasing. All existing coatings must be removed to achieve maximum bond strength. Tools and implements should be cleaned immediately after use with Megapoxy Thinners.

Where this product excels

Megapoxy PF is frequently specified for critical tasks across various construction and repair scenarios:

  • Concrete crack cap and breach sealing: In membrane-covered or tiled concrete areas, it serves as a fast-setting cap sealant for cracks or to seal breaches before or during injection, containing the injection resin and preventing leaks.
  • Precast concrete and masonry bonding: Its high strength and rapid set make it ideal for bonding precast concrete articles, natural stones, bricks, and ceramics, ensuring fast turnaround times on site.
  • Metal-to-concrete adhesion: For grouting bolts, bonding metal components to concrete structures, or repairing metal articles where a strong, permanent connection is essential.
  • Fibreglass and cement sheet repairs: Effective for filling and repairing fibreglass articles, or flush-filling countersunk screws in fibre cement sheets, providing a durable, machinable finish.

How it fits in a real system

Megapoxy PF often acts as a critical first step in concrete crack repair systems. It's used for cap sealing prior to injection with other low-viscosity epoxies like Megapoxy H, or to seal internal breaches when liquid resins are applied. Its rapid set ensures the crack can be prepared and sealed quickly, allowing subsequent injection steps to proceed without delay. This sequence is vital for effective crack management in structures where liquid ingress or structural integrity is a concern.

Choose this when

  • When you need an epoxy adhesive or filler that sets in minutes, not hours, to maintain project schedules.
  • For bonding dissimilar materials like metal to concrete, or structural elements such as precast concrete and natural stone.
  • When the application demands high compressive and tensile strength, superior to that of concrete itself.
  • For vertical or overhead applications where a non-sag, creamy paste consistency is essential for accurate placement and retention.
  • As a cap sealant or breach sealant in concrete crack injection systems, where rapid sealing is required before injecting lower viscosity resins.

Don't use this when

  • Not for: Bonding to coated surfaces without thorough removal of all existing coatings. Inferior bond strengths will result if applied over paint or other finishes.
  • Not for: Generic crack filling where a lower viscosity, penetrating crack filler (such as Megapoxy HX Epoxy Resin) would be more appropriate for deep, fine crack injection.
  • Not for: General purpose adhesive needs where a slower set or different adhesive properties (such as Megapoxy PM Adhesive) might offer specific advantages.
  • Not for: Applications below its minimum application temperature of 10°C, as curing will be significantly inhibited.

Megapoxy PF is VOC Free, ensuring a safer application environment with no volatile organic compounds released during curing. It is also classified as a Schedule 5 Poison (Caution), requiring appropriate handling and storage according to relevant regulations.

Choosing between Megapoxy PF and Megapoxy H

While Megapoxy PF offers rapid-set, high-strength bonding and surface sealing, products like Megapoxy H Epoxy Resin are formulated for deeper penetration into concrete cracks. Megapoxy PF is typically used as a surface cap or a secondary sealant to contain an injection, whereas Megapoxy H is the low-viscosity resin designed to be injected into those fine cracks. Choose PF for immediate surface adhesion and structural paste repairs, and H for the subsequent, deeper structural crack injection.