Concrete Drilling, Cutting, Sawing, Crunching and Chasing

Forming Accurate Clean Holes & Openings in Concrete Walls, Flooring and Slabs

There is a massive demand for forming accurate clean holes & openings in Concrete walls & floor slabs. This is achieved using Diamond tipped drills & blades.

Using this technique avoids damaging or cracking the concrete that would otherwise happen if a more aggressive approach was used.  Like using a mechanical breaker. (Jack Hammer)

Diamond drills are very powerful pieces of equipment.

Diamond drills are very powerful pieces of equipment.

Below are the various methods of cutting concrete:

Diamond Drilling

Used for drilling holes in reinforced concrete for-

  • Mechanical & Electrical services
  • Shafts for ventilation
  • Heating & Pipe conduits

Diamond tipped drills of diameters from 6mm – 100mm are fitted to a static rig.

They can be used to drill both vertically or horizontally.

Wet cutting is the usual method – The drill rig is attached to a water supply, which keeps the cutting bit cool.

Stitch Drilling

For large diameter holes in Concrete this method is used.

A series of small diameter overlapping holes are drilled it provides the ability to cut an unlimited size of the opening or shape through any thickness.

Cutting Concrete using a hand held angle grinder

Used on site by General Tradesmen for the day to day cutting of Bricks, Lintels, Paving etc. Electric or Petrol hand held machines with Diamond tipped blades. Cutting depth is restricted to 100mm. Almost every Builder will have one of these. Petrol versions have 2 stroke engines. They have a tendency to catch in deep cuts and are responsible for many on-site accidents. Do not use unless you are adequately trained.

An angle grinder can be used for cutting through concrete.

An angle grinder can be used for cutting through concrete.

Chain sawing

A hand held machine similar to a conventional chain saw. Hand held makes them quick & easy to operate, they can be used in confined spaces. Again they are cooled by water. Chain saws can cut up to 1000mm deep in Concrete, Granite & Brick.

Concrete chain saw

Concrete chain saw

Plunge sawing

Using a machine similar to a chain saw but larger & again mounted on a rig with rails to allow accurate movement of the rig.

It offers the ability to cut to 1000mm deep offering a faster alternative to stitch drilling and leaves a flat saw cut to the opening.

Concrete Sawing

Used for accurate Sawing of reinforced concrete & Asphalt road surfaces.

A Diamond tipped blade mounted on a petrol, diesel, or electric machine of a type in the attached image. Typically these will cut to a depth of 600mm.

There are larger ride on machines for cutting deeper.

concrete saw

Wire sawing

Used for removing large sections of concrete on bridges, viaducts & has the ability to cut through multiple sections in one go.

A steel wire impregnated with Diamonds is fed through pre- drilled holes. The wire is tensioned using hydraulic pulleys. It works on the same basis as a cheese wire or band saw, obviously on a much larger scale.

Concrete Bursting

Used for removal of large sections of concrete & controlled demolition of piers.   A hydraulic jaw applies massive pressure to the concrete causing it to burst apart. Water is not required and the operation causes minimal dust & noise.

concrete bursting machine

concrete bursting machine


Image credit: Howdeedoodat and toolstop