Repairing Cracks or Joints in Driveways

ElastiPoxy™ Joint & Crack Filler is a special two-component epoxy designed for repairing control joints or cracks in concrete slabs where flexibility and elongation are required.

Control joints or "saw cuts" prevent unsightly cracking in concrete slabs due to their natural expansion and contraction – the cracking then occurs at the bottom of the control joints. But the cracked joints let in water, which may cause freeze-thaw damage and heaving if the gravel bed is silted up. Fill the control joints with ElastiPoxy. This will also prevent the edges of the joints from getting "chewed up" due to heavy traffic.

If there are not adequate control joints in a concrete driveway, Nature will create its own – cracks in the concrete. The cracks will then accomodate some movement of the concrete, actually acting as control joints. If you repaired these cracks with a strong, rigid filler like our CrackWeld Floor Repair Kit, the natural expansion and contraction of concrete may cause new cracks in the driveway. Filling moving cracks with ElastiPoxy will allow for the natural movement of concrete without causing new cracks.

To prevent ElastiPoxy from running out, insert a foam backer rod or pour in some sand to partially fill the crack, leaving at least 1/2" for the filler. It will also act as a bond breaker – the epoxy should bond to the sides of the crack but not to its bottom.

ElastiPoxy is pourable, self-tacking, and self-leveling – no troweling or finishing needed.

Surface Repairs:
ElastiPoxy is also handy for filling spalls, pit marks, or holes in concrete, as well as cracking caused by rusting embedded steel. If appropriate, mix ElastiPoxy with sand and trowel the epoxy-sand mix into spalls to provide a strong and rigid repair, similar in appearance to concrete. Check out Picture Guide for Repairing Cracks in Concrete Blocks.

Appearance:
Gray. You can easily color the epoxy by adding color pigments during mixing. To match the color and texture of concrete, you can broadcast sand or colored sand over the epoxy before its surface hardens.

ElastiPoxy applications:
Driveways, parking decks, patios, sidewalks, pool decks, garage floors, basement floors, floor-to-wall joints, warehouse and factory floors. Ideal for large moving joints like driveway-to-garage floor, or sidewalk abutting a foundation wall.

Repairing Cracks in Concrete Driveways
crack in a driveway contents of ElastiPoxy crack filler kit rolling cans of epoxy compounds mixing epoxy compounds
Find cracks, spalls, or pits in the driveway. The ElastiPoxy kit includes measuring cups and a mixer. Roll the cans. The compounds are multiple viscosity products. Thoroughly mix each compound using the mixer at low speed.
chasing crack in floor vacuum out the crack measure a part of Compound A resin measure one part of epoxy hardener
Chase cracks to at least 1/2" depth using a 4" right-angle grinder or diamond crack chaser. Remove all debris and dust. Vacuum the crack. Carefully measure one part of Resin. Carefully measure one part of Hardener.
measured equal parts of resin and hardener combine parts A and B mixing both epoxy compounds pour epoxy into crack
The amounts of Resin and Hardener must be equal. Combine Resin and Hardener in a cup or a plastic pail. Thoroughly mix Resin and Hardener together using the mixer at low speed. Allow to off gas for 15 minutes. Pour the mixed self-leveling epoxy into the routed crack or spall.
cured epoxy crack repair      
The cured color is gray but the epoxy can be mixed with color pigments. Or broadcast sand before the surface hardens.