Core drilling
Holes from 20 to 300 mm through reinforced walls, floors, brick and block. Extension bits when it has to go deeper.
Core drilling is a straight route through a concrete structure for something that has to get to the other side: wiring, plumbing, data, ventilation, fire services, earthquake strengthening, structural steel.
We drill 20 to 300 mm in diameter, typically to 400 mm deep, with extension bits for deeper holes. Reinforced concrete, brick, block and masonry, in tight spaces, with the area left clean.
For plumbers: core drilling, chase cutting, breaking out and the slurry vac as one package, safe and clean inside a building.
Put a number on it
A row for every hole size. The price comes back on this page.
- 1The job
- 2Where
- 3Details
Text a photo of the slab and the access to 027 966 9505 and it lands with your job.
This one needs a look first
Your details are with us. Ring or text if you want it sooner.
Call 027 966 9505When you need it
Common jobs for this service. If yours is not on the list, ask.
- A trade needs a route through a wall or a floor for their services.
- Ducting, a vent or an extraction fan has to go through masonry or double brick.
- A new drainage line has to come into an existing sump.
- Holes are needed through a retaining wall to relieve the water pressure behind it.
- Structural steel or strengthening work needs a set of holes through existing concrete.
- Access holes are needed through a floor to reach the ducts underneath.
The numbers
- Hole diameter
- 20 to 300 mm
- Typical depth
- To 400 mm
- Deeper holes
- Extension bits
- Materials
- Reinforced concrete, brick, block, masonry
Have this ready
None of it is compulsory. It is just the difference between one visit and two.
- The hole positions and diameters, and who is signing them off.
- What is behind or under the hole, if anyone knows.
- Power and water at the hole, or tell us in advance if there is none.
- Access for the rig, which is compact but still needs a path from the vehicle to the wall.
How we do it
The sequence on a normal job.
- Mark up the holes and check what is behind them. If nobody on site knows what is in the slab, scan it first.
- Set up the compact rig, which gets into tight spaces.
- Drill, and catch the slurry with a slurry vac rather than let it run across your floor.
- Leave the area clean and tidy.
Jobs like this one
Photographed on site and posted at the time.
Data duct cores through a supermarket floor
Careful core drilling through a supermarket floor to reach the data cable ducts underneath.
132 mm core to 1350 mm deep, same afternoon
A call for help at midday and a workable solution by 3pm: a 132 mm bit and extension bits, on a site that could not wait.
What we get asked
What size holes can you drill?
20 to 300 mm in diameter.
How deep can you core?
Typically to 400 mm, and extension bits take a hole deeper. The deepest we have drilled is 1350 mm, a 132 mm core, in September 2024.
Can you drill brick and masonry as well as concrete?
Yes. We core reinforced concrete, brick, block and masonry, including straight through two layers of brick for extraction fans and drainage holes in retaining walls.
Can you drill in a tight space?
Yes. The rig is compact, so tight spaces are not a problem, and we leave the area clean and tidy.
Do you drill out existing sumps?
Yes. We drill out existing sumps to take new drainage pipes.
How much notice do you need?
One call in September 2024 came through at midday and we had a workable solution by 3pm. Ring and tell us what you have got, and we will tell you when we can be there.
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 core drilling sorted?
Tell us where you are and what the job is, and we will tell you when we can be there.