Description
Megapoxy HX Extra Low Viscosity Epoxy Resin is a hydrophilic, 100% solids liquid resin formulated specifically for jobs where a standard epoxy is too thick to properly penetrate — gravity-fed or low-pressure injection repair of cracked concrete, and impregnation of porous masonry and timber. Its hydrophilic nature is the key detail: rather than being repelled by moisture in the substrate, it actively displaces it, which is what makes it viable for crack repair in conditions that aren’t perfectly dry.
Being VOC-free and easily mixed by hand at a simple 3:1 ratio makes it practical for on-site use without specialist mixing equipment, while its cured performance — superior tensile and compressive strength to concrete itself, with excellent chemical resistance — gives genuinely structural repair capability. Complying with AS/NZ 4020:2018 for drinking-water contact broadens where it can be specified into water-safe applications most general-purpose epoxies aren’t rated for.
Technical Specifications
| Mix ratio | 3 parts A to 1 part B |
|---|---|
| Work time | 60 minutes |
| Cure time | 24 hours at 25°C |
| Colour | Grey |
| Mixing time | 3 minutes (2 min initial + 1 min after scraping sides) |
| VOC content | VOC free |
| Compliance | AS/NZ 4020:2018 (drinking water contact) |
| Packaging | 4L kit (3L A + 1L B); 20L kit (15L A + 5L B) |
Where to Use
- Concrete crack repair by gravity penetration or low pressure injection
- Impregnation of porous masonry and timber
- Laminating resin for fibreglass work
- Casting, surface hardening, floor repairs and capillary-action applications
How to Apply
- Prepare the surface — clean contact surfaces of oil, dust and contaminants; grind concrete/stone and remove debris.
- Measure by volume — pour the correct amount of Part A, then Part B, into a measuring tub.
- Mix — stir for 2 minutes, scrape the sides, then mix for a further minute until streak-free and uniform.
- Apply within the work time — 60 minutes; apply by brush directly onto cracks or pour using a dispensing bottle.
- Allow to cure — 24 hours at 25°C.
Important Notes
- Only mix a quantity that can be used within the 60-minute work time.
- Cures even in cold or damp conditions.
- Uncured product can be cleaned with Megapoxy Thinners.
< That penetration ability is really the whole point of choosing an extra-low viscosity resin over a standard epoxy — a thicker product simply can't reach into a fine crack the way HX's thin, hydrophilic formulation can. Its VOC-free formulation also makes it a more practical choice for indoor or enclosed-space crack repair work, where a solvent-heavy resin would need much more extensive ventilation to use safely. Keeping the two components' containers clearly labelled and never cross-contaminating measuring tools between Part A and Part B is a simple discipline that avoids a batch failing to cure correctly.
Gravity-fed crack injection relies entirely on the resin’s ability to find its own way into a crack under nothing more than its own weight, which is a much harder standard to meet than simply coating a surface. Megapoxy HX’s extra-low viscosity is specifically engineered for that gravity-penetration use case, distinguishing it from general-purpose epoxies that are formulated primarily for surface coating or gap-filling rather than genuine crack-injection work.
