Concreting
Concreting
Don’t pay too much for your concreting! There is no job too big or too small – we can pour exposed aggregate, stamped concrete, coloured concrete and grey concrete.
All concrete extensions are drilled and pinned to the existing slabs to prevent movement, while controls cuts are made to control any future cracking.
Finishes
Choose from a wide array of different finishes. The finishes shown are achieved by working on the concrete while it is still wet or within a few days of concrete placement.
Light Exposure – Reveals the fine aggregates (sand) and a few stones of the course aggregate, this is great for footpaths or outdoor areas.
Broom Finish – This is one of the simplest finishes, whereby a broom is pulled across the concrete to provide texture. The broom finishing results in fine lines in the finish of the concrete.
Honed – Honing is a process that removes the surface layer of concrete, cutting the aggregate to produce a smooth, matt low maintenance finish. Suitable for outdoor areas that may require a greater slip resistance than polished finishes.
Polished – Polished concrete is concrete that is honed and then polished. The concrete is machined for a longer period of time using finer abrasives until the surface is extremely glossy and reflective. Ideal for kitchen, living areas and accentuates spacious design by bringing the outdoors in.
Trowel – Patterns can be made on the concrete, such as swirls, or different size arcs. The texture created can be course, medium, or smooth depending on the tool used to impart the pattern. This is perfect for courtyards and driveways.
Heavy Exposure – Reveals more stone, resulting in the aggregate protruding from the concrete surface, this is ideal for driveways or pool areas requiring more grip.
Concreting Procedure
For general paths, patios and driveways.
- The subgrade is levelled either by hand or skid-steer loader. If required a layer of crusher dust is spread and compacted.
- If joining onto existing concrete, holes are drilled and steel rods are epoxy fixed.
- A poly plastic moisture barrier is laid and taped together.
- If the top of the new concrete is within 75mm of the bottom of the weepholes, a physical termite barrier will need to be installed.
- A minimum of 6mm (F62) steel reinforcing mesh is used, and tied together.
- A 20 mpa with 20mm aggregate is either directly poured, barrowed or pumped depending on access.
- A portavibe is used to compact the concrete where required.
- After screeding and bull floating, the concrete is left untouched until all bleed water has dried.
- At this stage edges are rounded and the final steel trowel is done.
- The concrete can be mechanically trowelled by using a power floater (helicopter) or stick trowelled.
- If a non-slip surface is required, a broom finish is then applied.
- All required control joints are saw cut as soon as possible.