Patching a hole in a poured concrete foundation or a cinder block wall is challenging because gravity works against you. The thixotropic nature of LZ Patch Works allows it to be applied in layers up to 1.5 inches thick on vertical surfaces without slumping.

No curing membrane is needed because the epoxy cures by chemical reaction, not evaporation. However, keep the area dry for the first 4 hours. After 6 hours, you can grind, core drill, or coat over the patch.

"The patch is still soft after 12 hours." Cause: Either the mix ratio was off (too much resin) or the temperature was below 50°F. Solution: Remove and remix. Use a heat lamp to raise the surface temperature above 60°F.