Wall sawing
Doorways, windows and penetrations cut clean out of standing walls. Concrete, block and heritage stone.
A doorway through a concrete wall, a window opening in stone, a nib wall coming out, a penetration for ducting. Wall sawing is how an opening gets into a wall that is already standing.
Walls are cut to 300 mm deep, and flush to the floor where the opening needs it. The lines are pre cut with a hand saw, then finished with the saw the wall needs. On an interior cut, the prep and the clean up take longer than the cutting.
When you need it
Common jobs for this service. If yours is not on the list, ask.
- A new doorway or window opening has to go into an existing concrete, block or stone wall.
- A penetration is needed for ducting, services or a new drain line.
- A nib wall or a section of wall has to come out.
- A lintel slot has to be cut before the opening is formed.
- The opening is in a heritage or stone building and the interior has to stay protected from water and debris.
- The work is indoors, where petrol fumes are not acceptable.
The numbers
- Wall depth
- 300 mm
- Flush cutting
- Down to floor level
- Materials
- Concrete, block, heritage stone
- Indoor dust
- Extracted at the blade
Have this ready
None of it is compulsory. It is just the difference between one visit and two.
- The opening size and where the lintel goes, signed off by whoever is designing it.
- What is in the wall, if anyone knows. Scanning is available if nobody does.
- Somewhere for the cut section to go.
- Power and water, and a clear path from the vehicle to the wall.
How we do it
The sequence on a normal job.
- Sheet and protect the area first. On an interior cut the prep is a bigger part of the day than the cutting.
- Pre cut the vertical and horizontal lines with a hand saw, so the lines are true.
- Finish through the wall with the saw the wall needs.
- Extract the dust at the blade and vacuum the slurry, so the room is not coated when we leave.
- Clean up and leave the site clean.
Jobs like this one
Photographed on site and posted at the time.
Doorway cut out of an interior concrete wall
Vertical and horizontal pre cuts with a hand saw, then larger saws to finish, with a lot of the day spent prepping the area and cleaning up.
Attic window cut through 400 mm heritage stone
A new attic window and lintel slot cut through 400 mm thick heritage stone, with the interior protected from water and debris throughout.
What we get asked
How deep can you cut a wall?
Walls are cut to 300 mm deep, and flush to the floor so an opening does not leave a lip. Thicker walls are quoted on site.
Can you cut a doorway into an existing concrete wall?
Yes. In August 2026 we cut a doorway in a 250 mm thick wall with high frequency electric hand saws, which put no fumes into the building.
Can you cut stone as well as concrete?
Yes. In May 2026 we cut a new attic window and a lintel slot through 400 mm thick heritage stone, with the interior protected from water and debris the whole way through.
Will it make a mess inside?
There is dust and water at the cut, which is why we sheet the area, extract at the blade and vacuum the slurry. Prep and clean up take longer than the cutting on most interior jobs, and we do both.
Can you cut out a nib wall or part of a wall?
Yes. We cut nib walls, wall sections and penetrations for services.
Do you work after hours?
Yes. After hours and night work is available.
Timaru out to the Mackenzie
Timaru is the base, and we travel for the work.
- Timaru Our base
- Temuka South Canterbury
- Geraldine South Canterbury
- Ashburton Mid Canterbury
- Twizel About two and a half hours from Timaru
We also work across Mid Canterbury, North Otago and the Mackenzie.
Need wall sawing sorted?
Tell us where you are and what the job is, and we will tell you when we can be there.