How to Break a Concrete Slab for Plumbing

Examine the concrete slab area and decide where you want to install the new plumbing pipes. Mark the locations of the pipes with spray chalk to designate them clearly.

Gather the proper safety gear, including thick work gloves, goggles, ear protection, work boots and a dust mask. Don all the safety gear before proceeding with the concrete removal.

Install a 1-inch-diameter spade bit into an electric jackhammer using the manufacturer’s instructions. Jackhammers and bits are available for rent at tool supply companies.

Position the tip of a jackhammer over the chalked area. Stand with your feet squarely planted on the ground, but far away from the jackhammer.

Squeeze the trigger to begin hammering through the concrete slab. Hold the tool in place until you drill all the way through the slab, which is evident when the hammer starts to slide down faster.

Angle the hammer back at a 45-degree angle once it penetrates the slab. Use it as a crowbar to break off a chunk of concrete.

Release the trigger to stop the jackhammer. Pick up the broken concrete chunks and remove them from the hole.

Continue breaking through the edge of the concrete. Pry it up with the tip of the jackhammer until you work your way all the way down the chalk lines for the pipe.

Scoop up all remaining concrete chunks and throw them into a dumpster for disposal.