USDA approved Armorpatch is an aggregate-filled, 4-component (components A,B,C and activator) rapid setting compound for many different substrates including concrete. Armorpatch is easily mixed and put into place. Armorpatch exhibits an excellent trowelability and will support foot and wheeled traffic within 10 minutes of being mixed.

Armorpatch can be successfully used to coat, grout, or repair:

  • Freezer applications as cold as -40 °F
  • Produce coolers
  • Pump bases
  • Loading ramps and docks
  • Roadways
  • Warehouse floors
  • Airport runways
  • Storage tank steps
  • Trench lining


  • USDA Approved
  • Sets and can be used at temperatures as low as -40 °F.
  • High heat resistance to 300 °F
  • Armorpatch cures rapidly and may be used within 10 minutes, depending on temperature and humidity conditions.
  • Low viscosity resin that is easily applied. Armorpatch cures in the presence of moisture and bonds back to itself.
  • Armorpatch has a high impact, tensile and bond strength for concrete and steel.
  • Towmotor traffic does not damage Armorpatch.

Chemical Resistance

Armorpatch resists chemical attack from 70% sulfuric acid, salts, solvents, dilute oxidizing acids and oils. Contact the Wil-Cor, Inc. Technical Department for chemical resistance in specific service conditions.

Physical properties

Color Burnt Yellow
Mixed Materials Color Gray
Mixing Ratio : A (resin):B (cure) 1:1
Pot Life @ 75 °F 7 min.
Compressive Strength (10 min) 2,000 load lbs.
Specific Gravity 1.12
Abrasion Resistance 38 mg

Surface Preparation

Clean substrate with a wire brush, being sure to remove all laitance, debris and bond-inhibiting substances such as wax, oil, grease, rust or old coatings. After cleaning substrate, brush out the cavity to be filled with a brush so as to remove all trace of dust.


For Steel Surfaces

  • 1Remove all components from the shipping container.
  • 2Pour contents of the container marked Armorpatch Component A and the contents of the small bottle marked Armorpatch Activator into the 1-gallon shipping container and stir in well for 30 seconds.
  • 3Next add the contents of the container marked Armorpatch Component B into the previously mixed Component A and Activator and immediately stir for 15 seconds.
  • 4Add the Armorpatch Component C (aggregate) into the stirred liquid mixture and stir until all particles are well wetted out.


  • 1Remove the mixed Armorpatch material from the mixing container and place into the cavity to be patched.
  • 2Spread and level the Armorpatch within the cavity with a spatula, trowel, putty knife or any other flat-bladed object, such as the stick used for mixing.

Coverage and Estimating

When used as directed, the kit will yield 100 cubic inches of grout which provides the following coverages:

Area to be Covered Maximum Depth
200 sq. inches 0.50 inches
133 sq. inches 0.75 inches
100 sq. inches 1.00 inches
80 sq. inches 1.25 inches
66 sq. inches 1.50 inches
50 sq. inches 2.00 inches

Shelf LifeThe shelf life of Armorpatch A & B is a minimum of six (6) months in the original containers. Freezing temperatures or temperatures higher than 110° F do not adversely affect the properties of the Armorpatch resin system.

Freight Classification
Chemicals NOIBN
F.O.B. – Pasadena, Texas


  • Mix and apply Armorpatch only in well ventilated areas.
  • Wear gloves and goggles to protect the skin.
  • Wash with soap and water after handling.
  • When using acid solutions to clean surfaces, always wear goggles and protective gear.
  • When preparing an acid mixture always add the acid to the water. NEVER ADD WATER TO ACID BECAUSE A VIOLENT REACTION OCCURS.
  • For skin contact, wash thoroughly with soap and water.
  • For eye contact, flush with water for 15 minutes and seek immediate medical attention.