Diamond core drilling and concrete cutting in Bali

The everyday work is coring: holes from Ø32 to 350 mm for drainage, ducting, conduit, extraction and pipe penetrations through slabs, walls and beams. A core comes out as a solid plug instead of debris, so the surrounding concrete is untouched and the opening needs nothing beyond a sleeve and a seal. On an occupied floor above a restaurant still trading, that difference decides whether the kitchen opens that evening.

Larger openings call for saws. Track-mounted wall sawing cuts doors and windows through reinforced walls to precise dimensions; floor sawing removes slab sections for stairs, lifts and service risers; wire sawing handles thick or obstructed elements no blade can reach in one pass. Every cut is planned around what sits inside the concrete, which is why scanning comes before the machine rather than after the surprise.

What sits inside the concrete decides the method

Every element we cut has a history: a bar layout, a conduit run, occasionally post-tension strands that must never be touched. Cutting a slab without knowing that history is how a project acquires a structural repair nobody budgeted for. So the first visit is a scan — an electromagnetic scanner mapping bars and cover, cross-checked against the structural drawings where they exist, with the findings chalked onto the surface so you can see the constraints before the position is agreed.

Often the scan shifts an opening a hundred millimetres and the problem evaporates. Sometimes it cannot: a duct has to pass through a beam, or a stair opening has to interrupt a slab band. Then the cut becomes an engineering item — the opening designed, trimming steel or a steel frame detailed, and the cutting and propping sequence written down. We would rather hold that conversation before the blade arrives than explain a sagging soffit afterwards.

Cutting inside a building that stays open

Most of our cutting happens where nothing can close: houses with guests in them, restaurants trading at night, retail units, hotel floors directly above occupied rooms. Diamond cutting suits that work because it is quiet next to a breaker, transmits almost no vibration into adjoining structure, and produces slurry rather than airborne dust when the water is managed properly. We bund the work area, vacuum slurry as it forms, and protect finished floors and the drains it must never reach.

The rest is scheduling and preparation. Noisy passes get booked outside service hours, access routes are sheeted and protected, and cut sections are lifted and removed on the same visit instead of being left as an obstacle for somebody else. On fit-outs we run the full sequence in one mobilisation — scan, cut, core the services, clear the spoil — so the following trades find an opening ready to build into rather than a mess to sort out.