Austin Roof Coatings >> ASC-450 Protective Coating

ASC-450 Protective Coating


ASC-450 is tough and flexible protective coating. It is a 98% solids Polyamidoamine resin epoxy used in various applications where chemical resistance is required.


ASC-450 is highly resistant to acids, solvents, caustics, hydrocarbons, saltwater, and freshwater. It was developed to withstand extreme corrosive and abrasive conditions with excellent outdoor durability.

Application Areas

ASC-450 is excellent as an anti-corrosive protective lining for floors, interior and exterior of tanks, pipe lines, boat bottoms, swimming pools, aquariums, vats, etc. It retains a resilient body, even after final cure. Can be used under constant spillage, immersion conditions, or highly abrasive applications. It also works well as a brushing type adhesive.


Surfaces should be free of rust, mill scale, oil, paint, films, grease, soluble salts, and other contaminants. Sand blasting to white metal is necessary in most cases. Concrete should be etched to provide a profile for optimal adhesion. Latinate and other loosely bound materials should be removed to provide a solid bonding surface. The preparation procedures above are general guidelines.


The mixing of Part A and B is very important! Material is supplied in two containers as a unit.

Always mix a complete unit in the proportion supplied. Agitate each part separately before combining the two. ASC-450 has a mixing ratio of 3 parts "B" to 1 part "A" (3:1). Use a jiffy mixer to thoroughly combine both parts and mix for 2 minutes.


Apply ASC-450 with a brush, 3/8" nap roller cover, or conventional spray equipment. Airless spray equipment should not be used. The heat created by an airless system can shorten pot life considerably and damage the coating and equipment. Caution! Without the use of aggregate, ASC- 450 is slippery when wet.


To get dry film of:Apply Sq.Ft./gal.
8 mils200 sq. ft.
16 mils100 sq. ft.

Heavy coats may be applied (up to 20 mils) without danger of bubbling or pinholes in film. Several coats may be necessary in building up a heavy tank lining. Do not apply heavier than 20 mils per coat or sagging will occur. For heavier film, apply additional coats. Additional coats must be applied as soon as the surface is tack free or within 36 hours.


Thinning is necessary with ASC -450, thin no more than 1 pint of xylene per 1 gallon of epoxy. Thinner should only be added after the mixing process is complete. Thinning extends pot life.

Clean Up

Application equipment should be cleaned immediately with xylene. Use Apple Cider Vinegar to clean hands and skin. Do not allow ASC-450 to remain on tools! Once it sets and is cured, it is extremely difficult to remove.

Curing Time

Pot Life:1 hr @ 80 F
Drying Time:4 hrs @ 80 F
Complete:48 hrs @ 80 F


      1. 1 gal. can containing 3 qts. of Base (Part "B")
      2. 1 qt. can full, containing Activator (Part "A")

Colors: ASC Standard Colors

Solids content: 98% Solids

Mixing Ratio:

3 parts "B" to 1 part "A" (3:1)

Abrasion Resistance (ASTM D4060)

Taber abraser CS-17 calibrase wheel at 4000 cycles with 1.5 mils wear and .30 grams lost.

Adhesion-Pull-Off (D4541)

Concrete: 100 % substrate failure @ 1181 psi
Steel: 80% adhesive failure @ 2337 psi

Impact Resistance (D2794)

16 inch lbs. direct - passed

Pencil Hardness (D3363): 6H - passed

Compression (C579-96): 9,585 psi


Flammable during application. Will not support combustion when cured.

For further assistance, contact one of our technicians via phone or e-mail.