How to Use a Hammer Drill on Concrete | Proper Technique

Drilling into concrete with a hammer drill comes down to one core idea: let the tool pound while you guide it. The hammering action breaks up the concrete while the rotating bit clears the debris, so most of the work is picking the right settings and staying patient. Whether you’re hanging a shelf or mounting a television bracket, the steps below work for both corded and cordless hammer drills.

How a Hammer Drill Works on Concrete

A hammer drill combines rapid rotation with a back-and-forth pounding action. While a regular drill just spins the bit and grinds through material, a hammer drill physically chips away at the concrete with thousands of impacts per minute. That pounding action is what makes concrete drilling possible with a handheld tool.

Wikipedia’s overview of hammer drills notes they are designed primarily for masonry drilling, which is exactly what concrete is. Standard drills often stall or overheat on concrete because they lack this impact mechanism.

Step-by-Step Technique for Drilling Into Concrete

The method for drilling into concrete is consistent across major how-to sources. Home Depot’s experts and This Old House both describe the same core sequence, starting with marking your hole and ending with clearing the dust.

1. Mark the spot where you need the hole, using a pencil or a piece of tape so the drill bit doesn’t wander on the smooth concrete surface.
2. Fit a masonry bit (a carbide-tipped masonry bit) in the chuck. A standard twist bit will dull quickly on concrete and is the most common reason drilling fails.
3. Switch the drill to hammer mode using the collar or switch near the chuck. Drilling in normal rotation only won’t get you through concrete.
4. Start at low speed to establish the hole. Once the bit has a solid grip, you can increase speed gradually — this prevents the bit from skating across the surface.
5. Hold the drill firmly with both hands and keep the bit perpendicular to the concrete. Stand with your feet shoulder-width apart for a stable base.
6. Apply steady, light-to-moderate pressure and let the drill do the work. Forcing the tool overheats the bit and can damage the concrete around the hole.
7. Pull the bit out periodically to clear concrete dust and debris from the hole. This reduces heat buildup and keeps the bit cutting efficiently. This Old House recommends using a vacuum or compressed air to clear the dust as you go.
8. Drill to depth, going slightly deeper than your anchor or screw length so the fastener seats fully. Stop drilling once you hit the target depth.

A YouTube demonstration of the same technique adds one practical detail: once the hole is established, you can switch to a higher gear to speed things up. The low-speed start matters most for the first few seconds.

Common Mistakes and How to Avoid Them

Most failed concrete drilling comes down to a handful of avoidable errors. Knowing them in advance saves you a dull bit and a frustrating afternoon.

• Using a standard twist bit instead of a masonry bit. Masonry bits have carbide tips that withstand the pounding; standard bits dull almost immediately.
• Forgetting hammer mode. If the drill isn’t set to hammer, you’re just spinning a bit against concrete and making dust, not progress.
• Starting at full speed. High speed on a fresh hole makes the bit wander. Start slow, then speed up.
• Pressing too hard. Forcing the drill overheats the bit and can crack or spall the concrete surface. Steady pressure wins; brute force loses.
• Drilling at an angle. A bit that isn’t perpendicular creates an oversized, misshapen hole that anchors won’t grip properly.
• Skipping dust removal. Concrete dust packs into the flutes and stops the bit from cutting. Pull out and clear the hole regularly.

If you’re drilling into a wall or slab with rebar, conduit, or cables, check the area first. Avoid drilling near edges or corners on thin concrete — the hammering action can crack weak spots. If your hole is large, deep, or the concrete is unusually hard, a rotary hammer drill (the heavier-duty cousin of the hammer drill) may be the better tool for the job.

Safety comes down to two things: eye protection and ear protection. Concrete dust and debris fly during drilling, and hammer drills are loud enough to damage hearing over prolonged use. If you’re comparing cordless options before buying, our roundup of cordless hammer drills for concrete work covers what actually handles masonry well.

FAQs

Do I need a special drill bit for concrete?

Yes. You need a masonry bit with a carbide tip, not a standard twist bit. Carbide-tipped masonry bits are designed to withstand the hammering action and cut through concrete efficiently. Standard bits dull almost immediately on concrete and typically stall or overheat before making progress.

Is a hammer drill the same as a rotary hammer?

No. A hammer drill is a general-purpose tool that adds an impact mechanism for occasional masonry work. A rotary hammer is heavier and more powerful, using a piston-driven mechanism designed for sustained heavy drilling in concrete. For occasional home projects, a hammer drill is usually sufficient; for large or deep holes, a rotary hammer is the better choice.

Why does my hammer drill bit get stuck in concrete?

Bits get stuck most often because concrete dust packs around them or because you’re pressing too hard, which causes the bit to bind. The fix is simple: stop drilling, reverse the drill briefly to back the bit out, clear the dust from the hole, and resume at steady light pressure.