Previously known as Brent Quilliam Stonemason

At A.R.C. Stonemasonry, we specialise in the professional cleaning and restoration of monuments, headstones and graves as well as stone homes, walls and heritage buildings in Adelaide and all surrounding areas. We use a ThermaTech® stone-cleaning system – the only one of its kind in South Australia – to safely and effectively remove dirt, lichen, and pollution staining without damaging delicate stone surfaces.
Trusted by local councils for heritage cemetery work, we also offer this service to families and the general public who wish to restore loved ones’ memorials.
We also provide a wide range of memorial and monumental services – including repairs, re-lettering and restoration - visit our
👉 Memorial & Monumental Services page to see how we can help with all aspects of memorial care.
See our before and after photos below or read more in our Blog
We use an advanced low-pressure, superheated water system to gently lift away decades of dirt, biological growth, and pollution from stone surfaces. This process avoids harsh chemicals or abrasive blasting — making it ideal for heritage sites and soft stone. We use the ThermaTech system purposely made for delicate, historic surfaces — and we’re proud to be the only company in South Australia offering this technology.
For safe, effective, and environmentally responsible stone restoration, trust the experts with exclusive access to the best in modern conservation technology.
Built-up dirt or pollutants can accelerate the growth of biological matter, which in turn can quicken the erosion and decay of stone surfaces and mortars.
Unlike a conventional hot water pressure washer, the ThermaTech system combines continuous high
temperature and pressure and lower water volume. This is delivered as a liquid spray, even at
temperatures close to 155ºC. Low pressures can be used for the gentle cleaning of the most delicate substrates. The ThermaTech has approximately 50% more performance in terms of pressure, as well as in terms of water volume than other styles of systems.
Often without the addition of any chemicals, ThermaTech can be used for the melting or removal of the following from stone, brick, limestone, sandstone, granite and more:
YES! The ThermaTech system was developed in the UK and is, unlike other machines, purposely made for delicate, historic surfaces and substrates and has been used on structures from historic buildings like the Tower of London to stone statues in Jeddah.
Absolutely. We clean stone houses, stone walls, and other residential features such as entryways, retaining walls and pillars. Whether you’re a homeowner or property manager, we provide professional stone cleaning services throughout Adelaide and regional SA.
Yes! Energy consumption is minimised through high-efficiency electric motors and air powered devices. The highly effective cleaning delivered by the ThermaTech® system reduces reliance on cleaning chemicals by enabling effective use of milder chemicals (where required). Water consumption is key and the system has been designed around high performance in conjunction with reduced water consumption .
Charles Sturt Memorial, Adelaide (After)
Adelaide, South Australia, 0406 046 137
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