Top Class Concrete Treatments
EXPERTS IN ACID WASHING / ETCHING
Acid washing is a process used on concrete in preparation for sealing, it cleans and opens the surface, so a sealer can be applied. The acid helps to remove the dirt from the surface of the concrete and can helps with the colour consistency of the concrete. Typically, we use a 7% -15% acid solution to achieve this result. Acid etching, which typically is a 20 -40% acid solution, burns off the top 1mm of the surface to have the fine sands and fine aggregates exposed to create an aged look and an anti-slip surface.
We take the utmost care when performing Acid washing / etching at your property.
SPECIALISTS IN CONCRETE POLISHING/ DECORATIVE GRINDING
Polished concrete has been processed through a series of mechanically ground "polishing/grinding" steps utilizing professional equipment designed for concrete polishing. This process also includes the use of a penetrant chemical known as a densifier/hardener. The concrete densifier/hardener penetrates the concrete and creates a chemical reaction to help harden and dust proof the surface. During concrete polishing the surface is processed through a series of steps (in general a minimum of 6 grinding steps) utilizing progressively finer grinding tools.
The grinding tools are progressive grits of industrial diamonds in a bonded material such as metal, hybrid or resin often referred to as a diamond polishing pad. The concrete is normally finished to a 800 grit level. Decorative grinding allows for different stone to be exposed. Full grind removes between 5-10 mm of concrete to expose the larger stones, a medium grind allows for a mix of large and smaller stones and a Salt and Pepper grind gives you smaller stones and fines. Polished Concrete is a great choice for the environment as it is a "Green" flooring system.
SPECIALISTS IN CONCRETE CUTTING/GROUTING
Control joints are planned in your concrete to allow for movements caused by temperature changes and drying shrinkage. If the concrete does crack, the cuts play an active role in controlling the crack along the control joint instead of randomly. Although this happens most of the times sometimes the concrete will still crack in other places.
We space the joints no more than 25-40 times of the slab thickness. A 100mm slab should have joints 2.5-4.0 m apart at a depth of 30% the depth of the slab. A 100mm thick slab should have expansion cuts at least 30mm deep. We cut expansion joints as soon as the concrete is hard enough that the edges abutting the cut don’t chip from the saw blade.
Decorative 10mm cuts can then be placed over the top of this control joint and at other intervals to give the tile effect
Grouting is done to fill the 10mm decorative cutting that is done to achieve a flagstone paver look, at a fraction of the price. We use a specifically designed tool that compresses the grout into the cut lines, leaving a consistent, smooth finish. Grouting is the best look for your 10mm concrete cuts and prevents the cuts from filling with dirt and weeds. We use the correct Concrete Construction Grout to insure your job is completed to a high standard.
Frequently Asked Questions
From "Can overlay treatments be put over timber floors?" to "Are there different types or levels of acid washing?", we have all the answers to Frequently Asked Questions.