Mastering the art of drilling into concrete effectively: Expert insights on useful techniques and essential tools for successful drilling projects
Before you start drilling into concrete, it's essential to ensure the area is clear of pipes, electrical cables, or rebar. Use a multi-detector to scan the area before you begin.
When drilling, start slowly and increase bit sizes gradually rather than forcing a large bit through in one go. Keep the drill speed slow and gradually increase it. Drilling a pilot hole using the smallest drill bit can help the drilling process and prevent the drill bits from getting stuck or overheating.
A standard combi drill is a good option for drilling into standard concrete. However, denser concrete may require a more powerful drill like an SDS drill. For larger home improvement projects, Thomas Goodman suggests considering a DEWALT or Makita 18V Brushless Combi Drill or an SDS drill.
To mark drill holes, use a centre punch and hammer to make a small dent. This will help you keep your holes aligned and ensure accurate placement.
To prevent heating the drill bit and reduce friction, move the drill back and forth to remove dust from the hole. Keeping the drill at a right angle to the surface, avoiding putting too much pressure on the concrete, going slow and steady, and never forcing the drill can help avoid cracking concrete.
If the concrete is structural or reinforced, an SDS drill is needed instead of a combi drill. Making multiple small holes in structural elements can compromise their strength, so it's best to avoid this when possible.
For drilling into dense concrete slabs, Thomas Goodman recommends using a mains-powered SDS drill and a sharp, masonry or concrete drill bit with a tungsten carbide tip. Worn bits can snag and cause fractures, so make sure you are using a sharp masonry bit.
Safety is crucial when drilling into concrete. Thomas Goodman, a construction expert at MyJobQuote, advises wearing an FFP2 respirator dust mask, flexible safety goggles, and ear defenders or plugs when drilling into concrete. If possible, have someone hold a builder's vacuum underneath where you're drilling to catch the dust. If not, throw a dust sheet down beforehand.
Bosch's EasyImpact combi drill is a good, entry-level option for DIY projects around the home that has a hammer action for drilling into masonry. For beginners buying online in the UK, Jack Middleton, technical product specialist at Sunopy Pergolas, suggests considering Bosch and Makita SDS drills for reliability.
Once you've drilled your holes, consider using concrete screws for easier drilling and securing screws or fixings. An impact driver can be useful for driving in the fixings once the holes are made.
Finally, to put your new drill to good use, consider checking out bathroom shelf ideas and how to build pantry shelves for your next project. Happy drilling!
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