That hairline miter joint in natural stone. The one that cannot show a seam, cannot yellow, and must hold permanently. Or the chipped edge on a custom benchtop, demanding an invisible, durable repair. Megapoxy 63 is formulated precisely for these critical aesthetic and structural applications, providing a translucent, high-strength epoxy adhesive gel that delivers. Achieve strong, clean lines and lasting repairs without compromise.

Why this product exists

Formulated as a 100% solids, solvent-free epoxy gel, Megapoxy 63 is engineered for high-strength thin-film applications where visible aesthetics and bond durability are paramount. It delivers reliable, non-shrinking adhesion for critical stone, tile, and masonry work, eliminating callbacks from discoloured joints or failed repairs. This product is a specialist solution for maintaining the integrity and visual appeal of high-value natural materials.

The numbers that matter

  • Bond Strength over 3 MPa on concrete: This significantly exceeds the cohesive strength of most concrete, ensuring the bond itself is typically stronger than the substrate it adheres to. It provides exceptional reliability for permanent installations of stone or ceramics onto masonry.
  • Compressive Strength of 120 MPa: This high value means Megapoxy 63 forms a rigid, load-bearing repair or bond. It withstands significant direct pressure without deforming or fracturing, critical for structural integrity in stone repairs or panel fixings.
  • Shore D Hardness of 89: This indicates an extremely hard, durable cured surface. It provides excellent resistance to impact and abrasion, maintaining edge profiles and preventing wear in exposed applications.
  • Work time of 30 minutes at 25°C: This controlled window allows ample time for precise placement and adjustment of stone panels, miter joints, or intricate repairs before the material begins to cure, reducing the need for costly rework.

What it's like to use

Megapoxy 63 mixes simply with a 2:1 ratio by volume (Part A to Part B), forming a smooth, easily workable gel. This thick consistency resists slump, making it ideal for vertical applications and precise joint filling. Spread it readily with a notched trowel for thin, even glue lines. Full and accurate mixing is critical; inaccuracies compromise cured properties and may prevent satisfactory cure.

Prepare surfaces by abrading lightly, ensuring they are clean, dry, and free of dust, grease, or laitance. Coated surfaces must have all existing coatings removed for optimal bond strength. Clean tools and mixing implements with Megapoxy Thinners immediately after use.

Where this product excels

  • In stonemasonry: For bonding critical miter joints in natural stone benchtops or cladding where an invisible, non-yellowing, high-strength bond is paramount. It also excels in repairing chipped edges, filling voids, and rectifying holes in stone, particularly when coloured with Megapoxy Pigment Pastes to match the surrounding material.
  • In tiling and masonry: Securely adhering natural stone, bricks, and ceramic tiles to masonry substrates. Its ability to create strong, thin glue lines ensures stable, long-lasting installations, even for large or heavy format materials.

Choose this when

  • When bonding natural stone, ceramics, or bricks with minimal visible glue lines.
  • When high-strength, non-shrinking, permanent bonds are required for miter joints or panel adhesion.
  • When repairing chips, voids, or cracks in stone where the repair needs to be durable, pigmentable, and blend seamlessly.
  • When working on projects where aesthetic integrity and long-term bond stability are critical.

Don't use this when

  • Not for: Bonding to coated surfaces without complete removal of existing coatings, as this will result in inferior bond strength.
  • Not for: Wet or submerged applications, as this product is designed for dry substrates.
  • Not for: Flexible movement joints; this is a rigid adhesive.
  • Not for: Low-viscosity crack injection; its gel consistency is designed for bonding and filling.
  • Consider megapoxy-69 for marine impact structural epoxy applications.
  • Consider megapoxy-p1 for potable water structural epoxy adhesive needs.

A specialist for pristine finishes

Megapoxy 63 offers a translucent, high-strength epoxy gel for thin-film stone, tile, and masonry bonding and repair. It ensures minimal visible glue lines and resists yellowing, unlike many general-purpose adhesives. This formulation prioritises both the strength and visual discretion required for high-end aesthetic applications, where standard adhesives might yellow or create noticeable bond lines over time.