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New 2 Old - #N2O221

High Modulus, Moisture Insensitive, 100% Solids Epoxy Bonding Agent

NEW 2 OLD - 221 is a two component, 100% solids, moisture insensitive, high modulus structural epoxy adhesive for bonding new concrete to old concrete and as a general purpose binder for patching and grouting.




  • Positive bonding of new "plastic" concrete to old concrete or steel.
  • Positive binding for epoxy mortars used in patching horizontal surfaces.
  • Grout for dowel bars, rebars and anchor bolts in concrete for load bearing applications.
  • Easy 1:1 mix ratio.
  • Moisture insensitive.
  • High strength.
  • 100% solids, conforms to VOC regulations.
  • Conforms to ASTM C-881, Class B&C, Types I, II, IV, & V.
  • Conforms to Georgia D.O.T., Section 886, Type II.

Surface Preparation

Surface must be clean and free of any dust oil, grease, laitance, curing compounds or any other contaminants. This should be achieved by sand blasting, water blasting or some other mechanical means. New concrete surfaces may be acid etched with muriatic acid and rinsed thoroughly. The surface must be dry or damp, and must be free of standing water.


Mixing & Application

Pre-mix each component before combining. Mix thoroughly 1 part component A with 1 part component B by volume. Mix with spatula or low speed drill with a mixing paddle. Be sure to scrape the sides and bottom of the container during the mixing process. Do NOT mix more than may be used in 30 minutes. For bonding new concrete to old concrete, apply mixed material to surface by brush, roller or spray. Pour new concrete while epoxy is still tacky. If NEW 2 OLD - 121 loses its tackiness before concrete is poured, re-coat with fresh epoxy. Epoxy mortar is produced by adding up to three parts of clean, dry, bagged sand by volume. Prime the surface with neat NEW 2 OLD - 121 and apply mortar with a trowel. For grouting dowel bars, anchors, etc., clean all dust out of hole and grout with neat NEW 2 OLD - 121.



  • Do NOT apply when temperature is below 40oF.
  • Do NOT apply to latex modified mortar or concrete.

Clean Up

Clean tools and equipment immediately with a suitable solvent such as xylene or lacquer thinner.



For professional use only. Part A material may cause skin irritation and delayed dermatitis. Contains Epoxy Resin. Part B material may cause burns on the skin and delayed dermatitis. Contains amines. Avoid prolonged contact with skin. See Material Safety Data Sheet for proper handling and required safety equipment.



  • Packaging: 3 gallon units, 15 gallon units, 150 gallon units
  • Mix Ratio by Volume: 2:1
  • Color: Clear Amber
  • Pot Life (100 Grams): 30-40 minutes
  • Bond Strength: 2 day - 3,300 psi|14 day - 3,600 psi (ASTM C-882)
  • Compressive Strength: > 10,000 psi (ASTM D-695)
  • Compressive Modulus: 375,000 psi (ASTM D-695)
  • Tensile Strength: 3,290 psi (ASTM D-638)
  • Tensile Elongation: 2% (ASTM D-638)
  • Water Absorption: < 1%
  • Georgia D.O.T., Section 886: Type II
  • Shelf Life: 1 Year
  • Viscosity: 2,000-3,000 cps
  • Coverage: Neat: 80 to 125 sq. ft./gal depending on porosity, 3:1 Mortar: 0.37 cubic feet per gallon of binder


2527 Lantrac Court

Decatur Georgia GA 30035

Toll Free

Phone: 800-240-1310    Fax: 800-240-7662


Phone: 770-808-0023    Fax: 770-808-6777

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