Ressi EPO Shield – Industrial Mastic
Ressi EPO Shield – Industrial Mastic is a high-performance, two-component epoxy coating
designed for steel substrates protected with anticorrosive primers in C4 high corrosivity environ
ments as defined in ISO 12944. It provides excellent chemical, UV, and weather resistance, enhanc
ing the durability and aesthetic finish of industrial, marine, and coastal steel structures
Ressi EPO Shield – Industrial Mastic
High-Performance Epoxy Topcoat for C4 High Corrosivity Environments
Ressi EPO Shield – Industrial Mastic is a high-performance, two-component epoxy coating
designed for steel substrates protected with anticorrosive primers in
C4 high corrosivity environments as defined in
ISO 12944. It provides excellent chemical, UV, and weather resistance,
enhancing the durability and aesthetic finish of industrial, marine, and coastal steel structures.
This topcoat is formulated with advanced pigments and resins to provide a smooth, hard, and
chemically resistant finish, ensuring long-term protection over the anticorrosive primer.
TYPICAL APPLICATION
- Structural steel frameworks in industrial plants
- Marine and offshore structures
- Storage tanks, pipelines, and chemical processing equipment
- Power plants, refineries, and coastal installations
- Heavy machinery and industrial equipment
- General fabrication and maintenance coatings in C4 environments
ADVANTAGES
- ISO 12944 C4 compliant for high corrosivity environments
- Excellent adhesion over Epoxy Paint Primer – C4
- High resistance to humidity, salinity, industrial pollution, and chemicals
- Smooth, durable, and aesthetically appealing finish
- Tough, impact- and abrasion-resistant film
- Suitable for brush, roller, or spray application
SURFACE PREPARATION
- Apply only over fully cured Epoxy Paint Primer – C4
(minimum tack-free time: 4–5 hours, full cure: 7 days).
- Ensure primer surface is clean, dry, and free from dust, grease, or contaminants.
- Light sanding is recommended for glossy or aged primer surfaces to enhance adhesion.
MIXING
Ressi EPO Shield – Industrial Mastic is supplied in pre-measured two-component kits
(Base and Hardener).
- Pour the entire contents of the Hardener (Part B) into the Base (Part A).
- Mix thoroughly using a low-speed mechanical mixer (300–400 rpm) until homogeneous.
- Avoid entrapping air during mixing.
APPLICATION
- Apply by airless spray, conventional spray, brush, or roller.
- Ensure uniform coverage and recommended dry film thickness (DFT).
- Recommended DFT per coat: 60–80 microns
- Number of coats: 2–3 depending on exposure conditions
- Overcoating: Minimum 8 hours | Maximum 48 hours (light sanding if exceeded)
COVERAGE
Approximately 70–80 sq. ft. per kg per coat @ 80–100 microns.
Theoretical coverage values are provided for reference only; actual material consumption
may vary depending on surface profile, porosity, and application conditions.
LIMITATIONS
- Working times will be reduced when temperature exceeds 35°C.
- Correct conditioning is essential during cold weather application.
- Application should be halted if ambient or substrate temperature falls below 10°C.
TECHNICAL PROPERTIES
| Property | Value |
|---|
| Appearance | Opaque Liquid |
| Color | Available in Different Color (Refer to Shade Card) |
| Viscosity (Part A) | 1000 – 2000 |
| Viscosity (Part B) | 100 – 150 |
| Mix Ratio (A : B) | 100 : 25 |
| Mix Viscosity @ 25°C | 400 – 600 cPs |
| Mix Density | 1.09 g/cc |
| Working Time | 90 – 120 minutes |
| Tack Free Time | 4 – 5 Hours |
| Over Coat Time | 8 – 12 Hours |
| Full Cure | 7 Days |
| Gloss | 100 – 120 (High) |
| Adhesion (ASTM D 3359) | 5B (Pass) |
| Pencil Hardness (ASTM D 3363) | 6H (Pass) |
| Mandrel Test (ASTM D 522) | 6mm (Pass) |
SHELF LIFE
12 Months from the date of manufacture when stored under warehouse conditions
in original unopened packaging.
PACK SIZE
- 1 KG: Part A 800g | Part B 200g
- 5 KG: Part A 4 KG | Part B 1 KG
- 20 KG: Part A 16 KG | Part B 4 KG
HEALTH AND SAFETY
The packed material is regarded as non-hazardous for transportation.
Once opened, extreme temperatures may cause the material to be flammable.
Do not reuse containers. Dispose packaging as per local regulations.
Gloves and suitable masks should be worn during application.
Please refer to MSDS for further health and safety information.
