ElastiPoxy Joint Sealant & Crack Filler Kit

ElastiPoxy Joint & Crack Repair kitElastiPoxy is a two-component flexible epoxy. No polymer additives, 100% solids, zero VOCs. Low viscosity, self-leveling epoxy for filling cold joints, saw cuts, large cracks, and spalls in slabs. Impact-resistant. Virtually indestructible under high water pressure or heavy traffic. Chemical and water resistant. When mixed with sand, provides a strong, rigid filler for filling cracks or defects in concrete and masonry.

  • ELONGATION – Adequate elongation to allow for the natural movement of concrete or masonry.
  • TENACIOIUS BOND - Adhesion to damp surfaces, making it ideal for basements, slabs on grade, and driveways.
  • ZERO VOCs - Environment-friendly.

The Old Way to Repair Joints in Concrete Slabs on Grade

Hydraulic cement is waterproof but does not bond well to concrete. That’s why it needs an inverted V-groove. It is also very rigid – more than concrete – and does not move with the concrete. Not suitable for moving joints! After a couple years, this rigid rod gets loose and efflorescence (white powder) starts appearing around its edges, soon followed by drops of water.

Polyurethane caulk is both waterproof and flexible. It bonds well to the surface of dry concrete but wicking water and efflorescence gradually weaken the bond. It has no strength and easily separates due to water pressure, efflorescence, or traffic.

These common methods provide only a superficial and temporary fix.

Order Today

ElastiPoxy is not sold in stores but delivered directly from the factory to your door. Orders received by 2 PM ET are normally shipped the same day and delivered by courier (FedEx) within 2 to 5 workdays. Based on shipping by courier to the lower 48 states. For expedited shipping or shipping to other states and Canada, please inquire first by e-mail or telephone.

ElastiPoxy Joint Sealant & Crack Filler
Size Price Shipping  
ElastiPoxy Kit - small (epoxy 2x 1-qt.) $135 $15 Order Now button
ElastiPoxy Kit - 4 quarts (4x 1-qt.) $215 $30 Order Now button
ElastiPoxy Kit - medium (2x 1-gal.) $289 $21 Order Now button
ElastiPoxy Kit - large (2x 5-gal. pails) $819 $60 Order Now button


Based on a routed out joint or crack 1/4" wide by 1/2" deep and using pure epoxy (without added sand), the smaller kit (2 quarts of epoxy) will fill approximately 75 linear feet. The medium kit (2 gallons of epoxy) provides four times more volume – 300 linear ft.

Using the smaller 2-quarts kit and 4:1 sand to epoxy ratio, you will need approximately 20 lbs. of dry sand for the mixture to fill about 375 ft. of cracks ¼” wide and ½” deep.  

Application and Information

For information on the appropriate mix and application for your project, visit ElastiPoxy Joint Filler Application

Repair Leaks in Concrete Control Joints, Basement Floor-to-Wall Joints

The ElastiPoxy Joint & Crack Repair Kit is suitable for both contractors and homeowners.Common uses include:

  1. crack in slab repair with ElastiPoxyWAREHOUSE, FACTORY CONCRETE FLOORS - Protect edges against heavy wheel loadings.
  2. SAW CUTS - Seal saw cuts in foundation slabs, basement floors, garage floor, and driveways to allow for the natural movement of concrete slabs.
  3. BASEMENTS - Use on floor-to-wall joint in basements and buildings to seal against water, vapor, and radon gas.
  4. SIDEWALKS - Repair sidewalk joint to the building foundation.
  5. CONCRETE STAIRS - Fix cracks in steps adjacent to a foundation wall.

Mix ElastiPoxy with sand for a strong and rigid repair of:

  1. CONCRETE SPALLING - Repair pits, holes, and defects in concrete driveways, patios, and pool decks.
  2. STRESS CRACKS - Use for filling large stress cracks in concrete floors
  3. HOLES – Filler for holes in parking decks and coating of embedded steel.
  4. CONCRETE BLOCK WALLS - Permanently seal cracks in concrete blocks or brick foundation walls walls.
  5. CRUMBLING CONCRETE - Use for parge coating very porous or crumbling blocks and concrete.
  6. FORM TIES - Waterproof leaking form ties in poured concrete walls.

Repair Kit Contents

repair crack in concrete floor with ElastiPoxyYou will need a plastic container (a small pail) for mixing the two compounds and a low-speed electric drill for the mixers. If needed, get some DRY construction or play sand (no fines!). A small plastic watering can or cup with a spout for pouring pure epoxy into joints and cracks in floors or a small trowel for applying the epoxy-sand mix.


- 1 can of Base Resin (Compound A)

- 1 can of Epoxy Hardener (Compound B)

repair leaking floor to wall joint- 2 Measuring Cups

- 2 Mixing Attachements


Gray color. You can mix in color pigment or use colored sand to match the surface color. Adding sand or sprinkling on sand before it cures makes the surface color and texture look more like concrete. The filler is partially paintable. When using pure epoxy, it is best to roughen up the surface first with a grinder.


Cured ElastiPoxy Properties
Compressive Strength, min. ASTM D 695 8,000 p.s.i. Indentation Resistance Mil-D-3134-E no indent 0-2000 p.s.i.
Tensile Strength, min. ASTM D 638 1,500 p.s.i. Abrasion Resistance ASTM D 1044 < 45 mg loss
Tensile Elongation ASTM D 638 25% Bond Strength to Concrete ACI 403 > 350 p.s.i.
Flexural Modulus ASTM D 790 95,000 p.s.i. Bond Strength to Steel ASTM D 570 1,950 p.s.i.
Hardness (Shore D) ASTM D 2240 60 Water Absorption Mil-F-52505 10%
Impact Resistance Mil-D-3134-E passes 16 ft-lb Fungus and Bacteria Resistance Mil-F-52505 no growth