Wire Sawing vs a Wall Saw for Thick Concrete

A wall saw is the default for a straight opening in a wall. It stops being the right tool when the concrete is thicker than the blade can pass, or when there is no face to bolt a track to. That is the usual moment to change to wire sawing.

What a wall saw needs

A wall saw needs a sound surface, anchors for the track, water, and clearance for the blade guard. It cuts a flat plane. Doors, windows and ducts are its work, and the comparison with round holes is in wall sawing versus core cutting.

If the section is a deep beam, a pile cap, a bridge pier or a foundation thicker than the largest blade you can safely run, more passes from both sides still may not meet. Forcing it leaves a web of uncut concrete in the middle.

What a wire saw is doing

Wire sawing threads a diamond wire around or through the section and pulls it through on pulleys. The cut can be very deep. It can work where a circular blade has no swing. Setup is slower: the wire path, the anchors and the direction the offcut will move all have to be planned before the motor starts.

It is the method we use for thick RCC that a track saw cannot finish. It is also used when a piece must be freed and lifted rather than broken, because breaking a heavy section on a live structure is how cracks travel.

How to choose on a real job

• Door, window or duct in a normal wall: wall saw
• No room to mount a track: stitch drilling, not wire, unless the section is also very thick
• Beam, pile cap, base or wall beyond blade depth: wire saw
• The offcut is heavy: name the lift in the method, whichever saw you use

Weight matters as much as thickness. A “small” opening in a transfer beam can still be a crane or a gantry problem. If the quote does not say how the piece leaves, it is not finished.

What to send

Photos of all sides, the thickness if you know it, and what the section is holding up. If drawings exist, the beam size is more useful than a wide shot of the site. Tell us whether the building is occupied and whether a method statement has to go to the consultant first.

Partial villa and structural removals that end up on a wire are discussed in the villa demolition briefing. For a first look, use the quote page and say “wire or wall” if you are unsure. We would rather name the method than arrive with the wrong saw.

Common questions

Get a quote All services