ANUMASTIC-102: Self-Priming Epoxy Mastic Surface Tolerant Coating  


Product Description :


Anumastic - 102 is two-component high solid high build epoxy mastic maintenance coating. This self-priming coating exhibits superior adhesion to bare, lightly rusted or previously painted steel. This flexible coating has exceptional combination of corrosion, abrasion, chemical and impact resistance, plus impermeability to gases and vapours not possessed by any other coating.

Features and Benefits :

Easy to apply and can be applied via airless spray, conventional spray, brush or roller.

Can be used as primer, intermediate or topcoat.

Anumastic - 102 is filled with metal flakes which orient themselves in the film in such a manner as to form a labyrinth. As Anumastic - 102 cures, chemical reaction between hardener, epoxy resin and metal flakes cause the metal flakes to form into a plate-like structure. It is the plate-like structure of the metal flakes that retards the passage of corrosive elements through the film by lengthening the path they must travel. Corrosive molecules must take the circuitous route around the layers of the metal flakes. Also, the high film build increases the distance corrosives must travel to reach the substrate.

The tremendous Anumastic - 102 advantage over conventional coatings is that it penetrates right through existing rust down to the steel substrate because of its excellent wetting ability. Most conventional coatings do not have this ability. Failure to penetrate through rust not only prevents good adhesion to the substrate ----- and therefore, encourages undercutting by penetration of water and chemical vapours along the coating film ----- but also allows moisture and air to remain entrapped in the porous rust film.

The binder in Anumastic - 102 is shielded against degradation by ultra-violet light from the sun and other sources because metal flakes are opaque. That means that chalking and other signs of UV attack are controlled at a much slower rate than with conventional coatings.

The metal flakes have unique reflective property. This reflective property not only prevents UV attack on the binder system, but also reflects away a high percentage of energy reducing the surface temperature of the coating compared to many types of conventional coatings. The lower surface temperature, of course, results in an increase in service life and a decrease in rate of breakdown.

It does not soften existing coatings as most conventional coatings do because it is a high solid coating. It can be applied over many types of coatings like alkyds, without crazing, lifting or exhibiting poor adhesion. Although some coatings will possess few of the above mentioned properties, Anumastic - 102 is unique in its inclusion of all of the above to set up an unequaled corrosion defense system .

Formulated with lead and chromate-free rust inhibitive pigments to provide maximum protection against severe weather, moisture and general chemical attack.

Provides excellent protection against fumes, splash and moisture condensation.
Can be used for the repair of aged inorganic zinc coatings.
Excellent resistance to splash and spillage of dilute acids, alkalis, certain chemicals and solvents.
Has excellent resistance to radiation and has decontamination properties.
Ideal for high humidity, moisture, marine atmospheres, heavy rains, high temperature, damp conditions, very dusty and fungus prone conditions.

Recommended uses :

Anumastic - 102 is intended for exterior/interior use where one coat high build barrier type protection is required for the properly prepared metal substrates such as steel, aluminium or hot dipped galvanized steel and for properly prepared masonry. It is also recommended for applications over rusty (tightly adherent) steel and for previously painted steel where surface preparation by blasting to SSPC - SP 6 Commercial Blast Cleaning or SSPC - SP 10 Near White Blast Cleaning grades is either impractical or cost-restrictive. Outstanding performance is obtained over sand blasted steel surfaces. Service life is in direct proportional to surface preparation.

Highway Bridges


Exteriors of Tanks & Silos

Fencing and Railings

Galvanized Steel

Oil Refineries

Food & Beverage Plants

Water Towers

Industrial Process Facilities

Lighting Columns & Steel Furniture

Marine Installations

Electricity Transmission Towers

Off-shore Platforms

Fertilizer Plants

Pulp & Paper Mills

Chemical & Petro-Chemical Plants

Containment Areas of Nuclear Plants

Pharmaceutical Industry

Rusted Steel Surfaces

Previously Painted Surfaces

  Resistance Guide :  

Immersion Resistance @ 25° C :-

Fresh water, Sea Water, Salt Water, Demineralized and Distilled Water.
Resistance to spillage and splash - not immersion :-

Aliphatic solvents, gasoline, kerosene, fuel oil : Severe

Weak solutions of acids and alkalis : Severe

Aromatic Solvents, formaldehyde : Severe
Glycol ethers, alcohols, chlorinated solvents : Moderate
Fats & oils, lubricating oils, cutting oils : Severe
Fresh and Sea Water : Severe
  Surface Preparation :  

Steel - (Moderate Service)

Minimum surface preparation for steel is either SSPC - SP 2-63 Hand Tool Cleaning or SSPC - SP 3-63 Power Tool Cleaning. These specifications describe the methods of preparing metal surfaces by removing loose mill scale, loose rust, and loose paint by wire brushing, sanding, scrapping or chipping with hand or power tools.

Steel - (Severe Service)

Where heavy corrosive conditions exist, blast cleaning to SSPC - SP 6-63 Commercial Blast Cleaning is highly recommended. That means a surface from which all oil, grease, dirt, rust scale and foreign matter have been removed except for slight shadows, streaks or discolourations caused by rust stain or mill scale oxide binder. At least two-thirds of any square inch should be free of all visible residues and the remainder should be limited to slight discolouration, slight staining or light residues mentioned above.

Steel - (Immersion Service)

Where the coating is required for immersion service, blast cleaning to SSPC - SP 5-63 White Metal Blast Cleaning is mandatory. That means a surface with a grey - white, uniform metallic colour, slightly roughened to form an anchor pattern for coatings. This surface is free of all oil, dirt, grease, mill scale, rust, corrosion products, oxides, paint and other foreign matter.

Aluminium & Galvanized Iron:

Aluminium & Galvanized metal surfaces should be prepared SSPC - SP 1-63 Solvent Cleaning which describes the methods of removing oil, grease, dirt and certain chemical compounds by wiping, etching or scrubbing with brushes or by solvent washing or vapour degreasing. It is important to note that galvanized iron should be weathered for a minimum period of 6 months prior to painting. Apply one coat of Anuprime - 291 Wash Primer for obtaining maximum adhesion. Then, one or two coats of Anumastic - 102 should be applied. Polyurethane, Epoxy and Chlorinated Rubber topcoats can be applied as per requirements.

Previously Coated Surfaces:

Maintenance painting will frequently not permit or require complete removal of all old coatings prior to re-painting. However, all surface contamination such as oil, grease, loose paint, mill scale, dirt, foreign matter, rust, mold, mildew, mortar, efflorescence and sealers must be removed to assure sound bonding to the tightly adhering old paint. In addition, glossy surfaces of old paint films must be cleaned and dull before re-painting. Thorough washing with an abrasive kitchen cleanser will clean and dull in one operation or wash thoroughly and dull by sanding. Remove sanding dust. Recognize that any surface preparation short of total removal of the old coatings may compromise the service length of the system. Always check for the compatibility of the previously painted surface with Anumastic - 102 by applying a test patch of 2 to 3 square feet. Allow to dry thoroughly. Check adhesion.


New concrete surfaces should be allowed to cure for a minimum period of 30 days before application. New or old concrete surfaces should be grey or grey-white color and free from pits, pockets and holes. Prepare the surface with abrasive blasting or power tools. Surface imperfections should be filled in with DURAPATCH. No cement dust or sand should be dislodged. In absence of blasting, etch the surface with 10-15% muriatic acid diluted in water. Allow this acid solution to remain on the surface for 10-15 minutes or until the bubbling stops. Thoroughly rinse the floor with water to remove all traces of acid. Allow the floor to dry completely before painting.

Concrete surface requiring a primer should be primed with Durapoxy 200 Clear or Anumastic - 102 Colour reduced 33% with Anusol - ETP Epoxy Thinner for assuring maximum penetration of the coating into the concrete and a better bond of coating system to the substrate. After the initial coat has dried for 24 hours, apply 2-3 full coats of Anumastic - 102 coating unreduced.


Anumastic - 102 is self-priming and does not require top-coating to achieve barrier properties, but it may be top-coated where aesthetics or special conditions are desired. It may be top-coated with epoxy, polyurethane, chlorinated rubber, vinyl and acrylic latex coatings.

  Recommended Systems :  
Steel : Moderate Service :-
Total DFT 150 microns

1 coat Anumastic - 102 Aluminium @ 150 microns per coat

Minimum Surface Preparation - "SSPC-SP 2-63" Hand Cleaning or "SSPC-SP 3-63" Power Tool Cleaning
  Note : Where obvious metal loss has occurred and /or pitted substrate occurs, a second coat of Anumastic - 102is recommended.
Steel : Severe Service :-
Total DFT 300 microns
1 coat Anumastic - 102 Aluminium @ 150 microns per coat
1 coat Anumastic - 102 Aluminium/Colour @150 microns per coat
Minimum Surface Preparation - "SSPC-SP 6-63" Commercial Blast Cleaning
Steel : Immersion Service :-
Total DFT 300 microns .
1 coat Anumastic - 102 Aluminium @ 150 microns per coat .
1 coat Anumastic - 102 Aluminium/Colour @150 microns per coat .
Minimum Surface Preparation - "SSPC-SP 5-63" White Metal Blast Cleaning .

Steel : Epoxy Topcoat :-

Total DFT 210-230 microns .
1 coat Anumastic - 102 Aluminium @ 150 microns per coat .
2 coats Durapoxy 200 Epoxy Enamel @ 30-40 microns per coat .
Steel : Chlorinated Rubber Topcoat :-
Total DFT 210-230 microns .
1 coat Anumastic - 102 Aluminium @ 150 microns per coat .
2 coats Anuchlor 555 LB Chlorinated Rubber Enamel @ 30-40 microns per coat .
Steel : Polyurethane Topcoat :-
Total DFT 210-220 microns .

1 coat Anumastic - 102 Aluminium @ 150 microns per coat.

2 coats Anuthane Enamel Aliphatic Polyurethane Enamel @ 30-35 microns per coat .

Application :-

Application of the coating by airless or conventional spray is highly recommended. It may be brushed also. Clean spray equipment and brush with Anusol - ETP epoxy thinner. Strong solvents in the material may soften old residual paint and cause blocking of the equipment during spraying. Clean between extended periods of down time.

Mix base and hardener components thoroughly before blending. Thoroughly mix equal parts by volume of base and hardener and mix well before application.





Anumastic - 102


Two pack cold cured


Modified Epoxy with Special Curing Agent / aluminium flakes and pigments.


Aluminium, off-white, green, light grey, dark grey. (Shades do not match with standard shade-card)


Semi Glossy

Volume Solids (mixed)

88± 3%

Mixing Ratio

Base : Hardener

1 : 1 by volume

Pot Life @ 50% R. H. @ 30°C

- unreduced



1-2 hours

3-4 hours

Dry film thickness per coat

-by brush

-by spray


125 - 175 microns

150 - 225 microns

Coverage-(theoretical-no loss)

5.87 m² /litre @ 150 microns

Serviceability @ 30° C

- Dry to touch

- Hard Dry

- Re-coat



- Full Cure


4 - 8 hours


16 hours minimum and 7 days maximum. If maximum re-coat time exceeds, brush blast before applying topcoat.


7 days

Dry heat resistance

120° C

Application Temperature




10° C

35° C

Relative Humidity


Resistance to corrosion under conditions of condensation @ 38°C for 1500 hours.

(ASTM - D 2247)

No Failure

Resistance to Salt Spray for 1000 hours

(ASTM - B 117)

No Failure

Outdoor Durability

2 years minimum except for slight chalking & darkening

Flexibility & Adhesion


Flash Point

23° C


Anusol - ETP Thinner


Flammable. Keep away from heat and open flame. Maintain good ventilation and avoid breathing vapours.


8 & 40 litres

Shelf Life

6 months

  Product Limitations :  
Do not apply over loose or flaking rust and paint.
The solvents contained in Anumastic - 102 may lift some aged alkyd coatings. A test patch is recommended prior to application
Like most epoxies, Anumastic - 102 lose gloss and chalks on exterior exposures. However, it should be noted that film integrity is not at all affected.
Oil, alkyd, oil modified polyurethane and epoxy-ester topcoats are not recommended.
Notes :-  
Brushes and spray equipment should be cleaned with Anusol - ETP Epoxy Thinner.
The contents should be stirred thoroughly prior to use.
When over-coating the weathered or aged Anumastic - 102, ensure that the coating is fully free from all contamination such as oil, dust, grease, stains etc.
This coating should always be thinned with Anusol - ETP Epoxy Thinner. The use of alternative thinners can severely inhibit the curing mechanism of the coating.

Disclaimer :-


Information provided herein is based upon tests believed to be reliable. It does not guarantee the results to be obtained. Nor does it make any express and implied warranty or merchantability, or fitness for a particular purpose concerning the effects or results of such case. It does not release you from the obligation to test the products supplied by us as to their suitability for the intended uses. The application, surface preparation and use of the products are beyond our control and, therefore, entirely your own responsibility.

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