Core drilling is a specialized technique used to create clean, perfectly round holes in hard construction materials like concrete, asphalt, masonry, and stone. Unlike impact drilling or chiseling, which rely on force and can damage surrounding structures, core drilling uses diamond-tipped hollow drill bits to grind away material with high precision. This allows engineers and contractors to perform modifications without compromising the integrity of the structure. The resulting holes are typically used for installations such as plumbing, wiring, HVAC systems, structural reinforcement, and inspection ports.
Wet core drilling relies on a continuous water feed to cool the bit and suppress silica, making it the go-to for dense materials and larger-diameter holes. Dry core drilling runs without water, so it’s better for softer masonry or locations where water isn’t practical. Wet cuts create a water-and-debris slurry that needs containment and disposal, whereas dry cuts generate fine dust that must be captured with a dust-extraction system or managed with appropriate PPE.
