For high-traffic food and beverage facilities, chemical bunds, and wastewater infrastructure, Megapoxy MC provides a 100% solids, VOC-free epoxy maintenance coating that resists heavy abrasion, chemical exposure, and hydrogen sulphide gas. It protects concrete and steel substrates, curing to a hygienic, dust-free gloss finish that is suitable for structures in contact with foodstuffs.
Megapoxy MC is a high-build protective coating formulated to seal floors, walls, and structural steel against aggressive environmental hazards. For harsh or highly aggressive service conditions, a three-coat application is recommended to achieve a total cured dry film thickness of 0.4 mm to 0.5 mm. The cured coating resists chemical splash and immersion, protecting containment areas, plant rooms, and factory floors from chemical degradation. Where slip resistance is required for ramps, car parks, or forklift areas, the freshly applied first coat accepts a broadcast of epoxy-quality sand, glass beads, carborundum, or silicone oxide, or a fine aggregate can be mixed directly into the coating at a rate of 250 grams per 5 kg kit.
Do not apply Megapoxy MC if the substrate temperature is below 10°C. Do not rely on wire brushing for metal preparation, as it is not entirely satisfactory and yields minimal adhesion only. Do not apply directly to existing coatings; bonding to coated surfaces will result in inferior bond strengths compared to bare, prepared substrates. Mixing ratios must be precise; inaccuracies or incomplete mixing will lower the physical properties of the cured system, and may prevent a complete cure or cause discolouration over time.
To ensure high adhesion, substrates must be prepared according to their material class:
Megapoxy MC is supplied in pre-metered kits. Pour the entire contents of Part B into the Part A container. Mix the components thoroughly, scraping the base and corners of the tin, then scrape the sides and mix again. Use a timer and mix to the following durations:
On highly porous concrete surfaces, prime first using Megapoxy LVS (Low Viscosity Sealer) applied at 8 m² to 10 m² per litre, and overcoat within 8 to 24 hours. Megapoxy MC can be thinned up to 10% with Megapoxy Thinners on the first coat, and 5% on the second coat, to improve workability. All thinners must evaporate before applying the next coat. Use Megapoxy Thinners to clean tools and mixing equipment immediately after use.
Yes, Megapoxy MC is suitable for structures in contact with foodstuffs. It is a 100% solids system and contains Nil VOCs, making it appropriate for hygienic environments like food and beverage facilities, including abattoirs.
Concrete surfaces require thorough mechanical abrasion like scabbling, grit blasting, or grinding to remove laitance and ensure maximum adhesion. Acid etching is an alternative if mechanical methods are not possible. The surface must be clean, free from grease and oil, and surface dry.
Yes, Megapoxy MC is formulated to be resistant to hydrogen sulphide. This makes it a suitable protective coating for concrete and steel structures in sewage treatment plants and pipes where H2S may be present.
Incorrect mixing or an inaccurate ratio of Part A and Part B will compromise the cured system. This can lead to lower physical properties, unsatisfactory curing, and potential discolouration over time. Always mix according to the specified ratios and times.
To create a non-slip surface, broadcast epoxy quality sand, glass beads, carborundum, or silicone oxide onto the freshly applied first coat. You can then leave it or recoat with Megapoxy MC to encapsulate the aggregate. Fine aggregates can also be mixed directly into the product before application.
| Application | Key benefit | Primary trades |
|---|---|---|
| Food and beverage facilities, abattoirs | Provides a VOC-free, hygienic, and dust-free coating suitable for contact with foodstuffs. Resists cleaning chemicals and abrasion. | Food processing contractors, industrial flooring specialists |
| Chemical storage tanks and bunds | Offers high chemical resistance, including to hydrogen sulphide, protecting concrete and steel assets from corrosive attack. | Industrial maintenance, chemical facility managers |
| Car parks, ramps, and factory floors (including forklift areas) | Delivers heavy abrasion resistance (Shore D 80), high compressive strength, and can be modified for non-slip finishes. | Commercial flooring contractors, facility management |
| Sewage treatment plants and pipes | Specifically resists hydrogen sulphide, preventing corrosion and deterioration of infrastructure in aggressive wastewater environments. | Civil contractors, wastewater treatment specialists |
| Mechanical workshops, plant and machine rooms | Creates a durable, high-build (0.4-0.5 mm in three coats) protective layer with excellent tensile strength for high-traffic and impact areas. | Workshop fit-out specialists, industrial painters |
Preparation is critical for performance. All substrates must be structurally sound, clean, dry, and free of all contaminants.
Mechanically grind or blast to remove all laitance and contaminants. Degrease as required. Ensure moisture content is within acceptable limits.
Grit blast to AS CK 9.4-1964 Class 3 finish. Degrease immediately after abrasion. Do not allow to flash rust.
For porous concrete, applying a primer seals the surface to prevent pinholes and blistering from substrate outgassing.
Apply one coat of Megapoxy LVS - Low Viscosity Sealer using a roller, brush, or spray.
Apply at a rate of 8-10m² per litre. Thinning is not recommended.
Precise mixing is essential for the coating to cure correctly and achieve its full strength. Do not guess the time.
Add Part B to Part A. Mix for 3 mins with a low-speed drill (200rpm max). Scrape all sides and base, then mix for 2 more mins. Total 5 mins.
Add Part B to Part A. Mix for 2 mins (200rpm max). Scrape sides and base, then mix for 1 more min. Total 3 mins.
Apply the mixed Megapoxy MC evenly to the prepared (and primed, if applicable) surface. For aggressive environments, a three-coat application is recommended.
Apply using a brush, roller, or airless spray. (Note: Squeegee is for MC2 only).
If required, the first coat can be thinned up to 10% with Megapoxy Thinners. Reduce to 5% for the second coat. Ensure all thinners have evaporated before recoating.
Both Megapoxy MC Part A (Warning) and Part B (Danger) are classified as hazardous chemicals and Dangerous Goods (S5 - Caution). Refer to the Safety Data Sheet (SDS) for full details. Effects may be delayed.
Wear safety shoes, gloves (nitrile rubber recommended), and safety glasses. If an inhalation risk exists, particularly with Part B, wear an appropriate respirator suitable for organic vapour/particulates.
For Part A, natural ventilation may be adequate under normal use. For Part B, ensure ventilation is sufficient to maintain air concentrations below exposure standards; use local exhaust ventilation or an appropriate respirator. Do not enter confined spaces where vapours may have collected.
Store in a cool, dry, well-ventilated place, out of direct sunlight, and away from foodstuffs, oxidising agents, and ignition sources. Keep containers upright and closed. Part B must be stored locked up. Dispose of material and containers in accordance with local, regional, national, and international regulations. If possible, recycle material and its container.
Proper surface preparation is critical for the long-term adhesion and performance of Megapoxy MC. Adhere to these guidelines to prevent coating failure.
Surface prep: Concrete must be free from grease, oil, and surface laitance. Mechanically abrade the surface using scabbling, grit blasting, or grinding. If mechanical abrasion is not feasible, acid etching with a 1:1 hydrochloric acid to water solution applied at 0.5 L/m² for 10 minutes is acceptable. Thoroughly wash and scrub the treated area to remove loose sand. Allow 24 hours to dry; the concrete must be surface dry for optimal adhesion. Remove existing paint by flame-cleaning, scutching, diamond grinding, or scabbling.
Primer: Optional. For particularly porous concrete surfaces, prime with Megapoxy LVS - Low Viscosity Sealer at a rate of 8-10 m²/L. Do not thin Megapoxy LVS. Recoat 8-24 hours after LVS application.
Surface prep: Grit blast to an AS CK 9.4 - 1964 Class 3 finish. If grit blasting is not possible, mechanically abrade the surface to a clean, bright metal finish. Degrease the surface thoroughly with an industrial-grade degreaser after abrasion. Wire brushing is not sufficient and will yield minimal adhesion. All existing paint and galvanising must be removed using quality paint stripper, followed by grit blasting or grinding.
Primer: Not required for prepared steel.
| Property | Value |
|---|---|
| Mixing Ratio by Volume | 3 Parts A to 1 Part B |
| Mixing Ratio by Weight | 4 Parts A to 1 Part B |
| Work Time at 25°C (Megapoxy MC) | 2 hours |
| Work Time at 25°C (Megapoxy MC2) | 30 minutes |
| Tack Free Time at 25°C (Megapoxy MC) | 4 hours |
| Tack Free Time at 25°C (Megapoxy MC2) | 2 hours |
| Re-Coat Time 25°C (Megapoxy MC) | 8 hours |
| Re-Coat Time 25°C (Megapoxy MC2) | 4 hours |
| Minimum Cure Time at 25°C | 24 hours |
| Minimum Application Temperature | 10°C |
| Coverage 5kg Kit | 20 - 25 m² |
| Coverage 20kg Kit | 80 - 100 m² |
| Maximum Operating Temperature | 100°C |
| Colour Part A | Various |
| Colour Part B (Megapoxy MC) | Amber |
| Colour Part B (Megapoxy MC2) | Clear |
| Compressive Strength (ASTM D695) | 70 Mpa (MC2 only) |
| Bond Strength Concrete (ASTM D4541) | >3 Mpa |
| Tensile Bond Strength Steel (ASTM D897) | 13 Mpa |
| Modulus of Elasticity (ASTM D695) | 2.4 Gpa |
| Tensile Strength (ASTM D638) | 30 Mpa |
| Hardness (Shore D - ASTM D2240) | 80 |
| Dielectric Strength 50Hz @25°C | 17 Kv/mm |
| VOC Content | Nil |
| Specific Gravity at 25°C (Part A) | 1.40-1.60 g/cm3 |
| Specific Gravity at 25°C (Part B) | 0.97 g/cm3 |
| Flash Point (Part A) | >200°C |
| Flash Point (Part B) | 69°C |
| Boiling Point/Range (Part A) | >200°C |
| Boiling Point/Range (Part B) | >100°C |
| pH (Part B) | >7 alkaline |
Here are some common examples on where Megapoxy MC used by our customers.
