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Megapoxy 69 High Strength Epoxy Adhesive Gel

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Megapoxy 69 is a professional-grade, high-strength epoxy adhesive gel. Its non-sag formula provides a 70MPa compressive strength, making it the certain choice for structural bonding of metal, concrete, timber, and stone in civil engineering, joinery, and remedial applications.
Vendor: Megapoxy
SKU: MP69/1
Availability: In Stock
$65.82
$65.82
Prices do not include GST
Physical Properties
Base chemistry Two-part bisphenol-a epoxy
Material type Non-sag epoxy gel adhesive
Appearance (mixed) Light yellow
Mix ratio by volume 1 part a to 1 part b
Solids content 100%
Voc content Nil
Work time 45 minutes @ 25°c
Minimum cure time @ 15°c 48 hours
Minimum cure time @ 25°c 24 hours
Minimum cure time @ 35°c 12 hours
Minimum application temperature 10°c
Compressive strength 70 mpa
Flexural strength 15 mpa
Tensile strength 25 mpa
Hardness (shore d) 70 minimum
Bond strength to concrete >3 mpa
Tensile bond strength to steel 30 mpa
Tensile shear strength >20 mpa
Modulus of elasticity 1.9 gpa
Packaging 4 litre, 20 litre kits
Shipping & Delivery

$15.95 + GST for Australia-wide shipping, excluding DG, oversized, long-length, and bagged items over 15kg. Rural, remote areas and site deliveries are also ineligible. If your order includes any of these, we will contact you to arrange additional freight fees. Online purchases only.

Use Megapoxy 69 for: Structural Timber Joinery • Metal-to-Metal Bonding • Granite & Marble Assembly • Concrete Repair & Anchoring

Megapoxy 69: A Product Overview

Megapoxy 69 is a two-part, non-sag epoxy adhesive designed for the jobs that can't afford to fail. Engineered for professional trade use, it delivers exceptional structural bond strength for a huge range of applications, from civil engineering projects to high-end architectural fabrication. Its translucent gel consistency makes it incredibly versatile, ideal for bonding metals, concrete, masonry, structural timber, and natural stone. Megapoxy 69 is the go-to solution where superior strength, impact resistance, and long-term durability are non-negotiable.

The formulation provides a simple 1:1 mix ratio and a smooth, creamy texture that is easy to work with, whether you're filling voids, anchoring fittings, or executing precision joinery. It cures to form a bond that is often stronger than the substrates themselves, providing absolute certainty and allowing you to stand behind your work with confidence.

70MPa
Compressive strength, delivering structural bonds superior to concrete.

Core Features & Specifications

  • Non-Sag Gel Formula: Stays exactly where you put it, making it perfect for vertical and overhead applications without slumping or dripping.
  • High Impact Resistance: Retains its formidable bond strength even after being subjected to repeated high impact forces and vibration.
  • Superior Bond Strength: Achieves a compressive strength of 70MPa and tensile shear strength over 20MPa, ensuring a permanent structural bond.
  • Versatile Substrate Compatibility: Creates tenacious bonds between metals, timber, concrete, natural stone, bricks, ceramics, and fibreglass.
  • Excellent Chemical Resistance: The cured epoxy is highly resistant to a wide range of chemicals, making it suitable for demanding industrial and marine environments.

The Megapoxy 69 Advantage

  • Get the Job Done Right, First Time: The product's immense strength and reliability eliminates uncertainty, preventing costly failures and call-backs.
  • Simple & Predictable Performance: A straightforward 1:1 mix ratio and 45-minute work time at 25°C gives you ample time for assembly with predictable results every time.
  • Zero VOC Content: The VOC-free formulation makes it a safer choice for internal applications and projects on sites with strict environmental and air quality controls.
  • Workable Consistency: The smooth, creamy texture is easy to mix and apply, ensuring complete coverage and void-filling for maximum bond integrity.

Applications in Practice: Trade Scenarios

For Remedial Contractors: Heritage Timber Bridge Repair

The Professional's Challenge

Repairing and strengthening rotted or split timber chords on a heritage-listed structure. The solution must provide immense structural integrity without altering the bridge's appearance and be fast-setting to minimise traffic closure time.

The Adheseal Solution

After removing all damaged timber, Megapoxy 69 is used to seal all large holes and splits. Its non-sag gel consistency ensures it fills every void, while its high compressive strength restores structural integrity. The adhesive cures to form a bond stronger than the original timber, ensuring a durable, long-lasting repair that stands up to the elements.

Best Practice Note

For a complete system repair on load-bearing timber, consider using Megapoxy 108 as a pourable epoxy grout into prepared voids after sealing with Megapoxy 69. This combination provides maximum strength and reinforcement.

For Joiners & Stonemasons: Premium Fabrication Assembly

The Professional's Challenge

Assembling high-value granite or marble fabrications requires a permanent, invisible bond that will not fail under stress. The adhesive must be strong enough to handle dissimilar materials, like bonding stone countertops to metal frames, without sagging or discolouring.

The Adheseal Solution

Megapoxy 69's translucent finish and non-sag properties make it the perfect choice. It holds heavy components in place on vertical surfaces during cure, and its gel consistency allows for precise application. The resulting 70MPa compressive strength guarantees a structural bond that provides absolute certainty for high-end installations.

Best Practice Note

Ensure all surfaces are mechanically abraded and thoroughly degreased before application. Even pressure should be applied during the initial cure to ensure a minimal, consistent bond line for the best aesthetic and structural result.

Frequently Asked Questions

What's the real-world cure time on a cool day on-site?

Megapoxy 69 has a minimum cure time of 48 hours at 15°C. In cooler conditions, like a Melbourne winter morning, you should plan for a two-day cure before the bond is subjected to significant loads. The minimum application temperature is 10°C; applying it below this will significantly extend cure time and may compromise final strength.

Can I use Megapoxy 69 to bond new steel components to old concrete?

Absolutely. This is a core application, but professional surface preparation is critical. The steel must be grit blasted or mechanically abraded to bright metal, then degreased. The concrete must be free of laitance, grease, and oil. This is best achieved by grinding or scabbling, followed by a thorough clean to ensure a sound, dry surface for maximum adhesion.

Is this product fully waterproof for marine applications?

Yes, Megapoxy 69 is ideal for structural applications in marine environments. The cured epoxy system has excellent resistance to water and chemicals. For it to be fully effective, the substrate (like timber or fibreglass) must be completely dry and properly prepared before application to ensure a permanent, waterproof bond that won't delaminate.

Applications & Benefits

Product applications, benefits, and relevant trades
Application / Use Case Key Benefit Primary Trades
Structural Metal Bonding Achieves tensile bond strength of 30MPa for permanent, load-bearing connections that are resistant to impact and vibration. Civil Engineers, Fabricators
Timber Joinery & Repair Non-sag gel fills gaps and cracks completely, creating waterproof bonds that are stronger than the timber itself. Carpenters, Joiners, Remedial Contractors
Granite & Marble Assembly Translucent gel creates discreet, high-strength bonds for premium stone fabrications and installations. Stonemasons, Furniture Manufacturers
Concrete Repair & Anchoring Bonds tenaciously to prepared concrete for high-strength crack repairs and anchoring of starter bars and fixings. Remedial Contractors, Builders

Applying Megapoxy 69: Professional Protocol

  1. Surface Preparation

    Proper surface preparation is non-negotiable for achieving the specified bond strength. All substrates must be structurally sound, clean, dry, and free of any contaminants.

    Porous Substrates (Concrete)

    Mechanically abrade by grinding or scabbling to remove laitance and expose a clean surface. Remove all dust.

    Non-Porous Substrates (Metal)

    Grit blast or grind to a bright metal finish, then immediately solvent wipe with an industrial degreaser to remove all residues.

  2. Mixing

    Combine Part A and Part B in a 1:1 ratio by volume. It is essential that this ratio is measured accurately.

    Thorough Mixing Technique

    Mix thoroughly with a spatula or mechanical mixer until a uniform, light yellow colour is achieved. Pay close attention to scraping the sides and bottom of the mixing container to ensure all material is fully combined. Poor mixing will result in a weak bond and may prevent the product from curing correctly.

    Work Time: You have approximately 45 minutes to apply the mixed product at 25°C. This time will be shorter at higher temperatures.
  3. Application & Curing

    Apply the mixed gel to the prepared surfaces using a trowel or spatula. For bonding applications, press the surfaces firmly together to ensure full contact. For repairs, work the material into the void to eliminate air pockets.

    Pro Tip: For structural bonding, clamp components securely to prevent movement during the initial cure. Remove any excess adhesive before it begins to set for a cleaner finish.
    Curing: Allow to cure for a minimum of 24 hours at 25°C before subjecting the bond to any load. Full chemical resistance and ultimate strength is typically achieved after 7 days.

Limitations & Safety

Product Limitations

!
Minimum Temperature: Do not apply Megapoxy 69 if the substrate or ambient temperature is below 10°C, as this will inhibit proper curing.
!
Coated Surfaces: Do not bond directly to painted, galvanised, or coated surfaces. These coatings must be completely removed to the bare substrate for a structural bond.
!
Mixing Ratio: The 1:1 mix ratio is critical. Inaccurate measurement or poor mixing will lead to significantly lower physical properties and potential cure failure.

Safety & Handling Requirements

🛡️
Personal Protective Equipment

Always wear safety glasses with side shields and impervious gloves (nitrile rubber recommended). Wear protective clothing to prevent skin contact. Wash hands thoroughly after handling.

💨
Ventilation Requirements

Use in a well-ventilated area. Natural ventilation should be adequate under normal use conditions. Avoid breathing vapours.

Emergency First Aid
Eyes:
If in eyes, rinse cautiously with running water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing for at least 15 minutes. Immediately call a Poisons Centre or doctor. Part B can cause serious eye damage.
Skin:
If on skin, immediately remove contaminated clothing. Wash with plenty of soap and running water. If skin irritation or rash occurs, get medical advice.
Inhaled:
Remove victim from exposure to fresh air. Keep at rest in a comfortable position. Seek medical advice if effects persist.
Swallowed:
Rinse mouth with water. Do NOT induce vomiting. Give a glass of water to drink. Seek medical advice immediately.

For all medical advice, contact a Doctor or the Poisons Information Centre (Australia: 13 11 26).

Substrate Preparation Guide

Concrete & Masonry

Surfaces must be completely free from grease, oil, and surface laitance. Degrease with a heavy-duty industrial cleaner. The surface laitance must then be removed via mechanical abrasion such as scabbling, grit blasting, or grinding. If this is not possible, acid etching may be performed. Allow the surface to dry for a minimum of 24 hours before application.

No primer typically required

Adhesion is achieved through correct surface preparation. Ensure the concrete is structurally sound and surface dry for a tenacious bond.

Metal Surfaces (Steel, Aluminium)

For maximum bond strength, metal surfaces should be grit blasted to an AS CK 9.4-1964 Class 3 finish. If grit blasting is not practical, mechanically abrade the surface to a clean, bright finish using grinders or sanders. Immediately after abrasion, degrease the surface by flooding with an industrial grade solvent. Wire brushing is not a substitute and will only provide minimal adhesion.

No primer typically required

A direct bond to a clean, abraded, and degreased metal surface provides the highest performance.

Timber

Timber should be clean, dry, and free from dust, oils, or any surface contaminants. For structural joinery, ensure timber is sound and free from rot. Abrading the surface with a coarse-grit sandpaper can improve mechanical keying, especially on dense hardwoods. Remove all sanding dust before application.

No primer typically required

Megapoxy 69 is designed to bond directly to prepared timber surfaces. Ensure the timber is below its fibre saturation point for best results.

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