GOSFORD QUARRIES CIVIL SANDSTONE FOR CREEKS, RIVERS, WATERWAYS AND FILTRATION MATERIAL SUPPLY
Australian Sandstone is the ideal retaining and filtration material due to its natural durability, porosity, breathability, non-polluting nature, and versatility.
Gosford Quarries supplies councils, civil contractors, foreshore, and water authorities with natural virgin sandstone materials such as boulders, armour rock, rip-rap, gabion, and logs for erosion prevention under severe weather conditions.
Sydney Harbour Foreshore Authorities and Rainwater River catchments authorities prioritise VENM sandstone materials as natural, do not pollute rivers, and affect fish and wildlife.
Other materials, such as concrete and granite, can affect the marine environment and certain breeds of fish and wildlife and contaminate freshwater habitats.
The use of natural sandstone boulders creates pockets for fish and habitats for them to breed. These safe havens encourage fish breeding and other wildlife habitats in a more natural ecosystem.
“Sandstone walls are often cheaper than concrete structures and are beneficial to the natural habitat encouraging and supporting the natural ecosystems of rivers, creeks, lakes and coastlines.”
CIVIL SANDSTONE FOR CREEKS, RIVERS, ESTUARIES, WATERWAYS AND SEAWALLS
Gosford Quarries has a wide range of highly sought-after raw quarry civil materials for Civil Projects involving all environmental projects, including filtration and soil retention management for waterways.
Our flat Sandstone Boulders function as a perfect embankment retention rock. We have rock revetment for freshwater (rock battery for creek beds) and saltwater (Marine) civil projects.

“Our sandstone embankments rocks consist of sandstone boulders which are also used in blade walling and sandstone rock armoury for embankment stabilisation.”
SANDSTONE BOULDERS AND RANDOM ROCK FOR CIVIL DESIGN
Gosford Quarries supplies Rock Armour for rivers and creeks, 500mm to 1 metre, which is ideal for creek and river banks.
Flatter random rocks can be stacked and designed to lock into one another. These are usually in basic diamond shapes and are quarried by design to lock and protect barriers and act as erosion controls.
Some Civil Engineers will specify smaller material sizes of the above for specific Civil Projects.
- The Hawkesbury management, for example, involved 500mm to 1-metre random rock with 300-500m sandstone balls in design.
- Sandstone Logs and Sandstone Rock armoury have been used in the Parramatta River Civil Project.
WHAT IS A SANDSTONE ROCK ARMOURY?

Sandstone Riprap or Sandstone Rock Armour, as it is both known by the use of sandstone civil product (usually large boulders, large sandstone rocks, revetment rocks, etc.) to protect coastlines and any man-made structure subject to erosion by water of any volume, velocity and force from streams, rivers or the sea (wave incursion, etc.).
When used as seawalls, these large, hefty sandstone boulders, locked together by design and specific placement in civil engineering, control erosion to provide ‘armour’ as in protection (hence the origin of the name and terminology).
Sandstone Rock Armour is supplied to the civil industry in ballast and gabion sandstone products. Rock Armour is a by-product of our dimensional stone extraction, so its quality is in the same region as that of the dimensional stone we also supply.
Obviously, the dimensional stone is the higher-grade product.
This difference is highlighted in how the sandstone is ripped up into boulders and then screened to size to meet RMS, MPA, and EPA standards.
Because Gosford Quarries always target a high-quality area of our quarry to ensure civil product quality at the extraction point, rock armour produced from retargeting this area of extraction after an initial larger extraction has the commensurate innate quality due to the location it is lifted from.
WHAT IS SANDSTONE ROCK REVETMENT?
Sandstone Rock Revetment uses large sandstone boulders in Civil Design to create a bastion of ‘seawall’ to absorb the shock and bombardment of incoming waves and seawater to coastlines, etc.
Rocks Revetement are installed in a tiered, sloping manner and comprises various large sandstone rock sizes the civil engineer and with which a civil engineer uses their knowledge of physics and engineering to prevent erosion, loss of shoreline and wave intrusion.

Due to its MPA rating of hardness and durability and the long-lasting nature of hard sedimentary rock such as sandstone, revetment walling provides rugged and robust, durable protection of any marine shoreline, coastline, bay, etc.
Gosford Quarries Sandstone Revetment Rock is a higher-grade sandstone that accounts for 30-40% of all quarried materials, meeting MPA and Council standards.
Regarding extraction, it is not much about the shape of the sandstone we are extracting.
Still, we want to achieve the quality and MPA specifications in making Civil Sandstone Products available for supply to our civil contracting clients.
SANDSTONE SEAWALLS IN CIVIL MARINE PROJECTS

Like their waterway counterparts, marine seawalls and rock armour not only dissipate wave energy crashing upon coastline boundaries but, being sandstone in origin, aesthetically blend into the environmental surroundings, visually pleasing to the eye.
Sandstone, of course, as a 100% Australian natural stone product, is ‘natural-looking’ by nature.
These seawalls can be focal points and “heroes” by civil design as much as blended and ‘integrated’ against landscapes and seascapes.
SANDSTONE BULKHEADS IN CIVIL ENGINEERING FOR MARINE APPLICATIONS
Sandstone bulkheads are usually installed around primary piping and waterways.
They have the same characteristics as all other filtration rocks, seawall barriers, and revetment rocks, and they are also pH-neutral and friendly to the environment.
“Sandstone Bulkheads are supplied in two forms from Gosford Quarries; sandstone logs and dimensional (large) stone at medium to large scale (sandstone boulders and large sandstone rocks).”

“Gosford Quarries also supply ‘bobcat rock’ (civil layman’s term) weighted and dimension rock that can be picked up by a little digger such as a bobcat.”
These sandstone boulders are stacked to create the bulkhead, and they are diamond-shaped, flat, or round, as specified by the civil designer of each unique civil marine project.
The bulkhead’s construction requires large-dimension rock that can ‘interlock’, and hence, by weight, structure, and durability, it performs a function to weather the onslaught of water and wave incursion at length.
SANDSTONE RANDOM ROCK FOR CIVIL DESIGN
Sandstone Random Rock is extracted from the quarry in roundish shapes, resulting from the way the sandstone is ripped out from the quarry site. These stones are usually 1 metre to 1.5 metres in dimension, flat, and used for stack walls.
When considering the recent terrible floods throughout the NSW and QLD regions, 500mm to 1-metre random rocks and greater dimensions are needed when the amount of water flowing rises quickly, significantly increasing the strength of the flow.
Hence, flood zones need large boulders that cannot be washed away, rolled over, or rolled onwards, causing potential blocks of the watercourse or unwanted redirection through random movement, etc.
BLADE WALLING, RANDOM WALLING, RANDOM SHAPED WALLING FOR CIVIL PROJECTS WITH CREEKS, RIVERS, WATERCOURSES AND WATERWAYS
Our sandstone blade walling can be cut to dimensions specified by Civil Engineers, used in creek applications, etc. Sandstone logs are another option for creek beds and can be installed to slow the watercourse.
According to civil design, stackable sandstone random quarry rock and rounded sandstone boulders can both be used to build civil retaining walls and slow water from creeks. They are deployed in a wide range of civil uses.
FILTRATION, RUNOFF, SOIL RETENTION AND COURSE SLOWING FOR WATERWAYS
Sandstone boulders help to retain soil with rainwater runoff concerns.
Our random rock sandstone gabions are used in gabion baskets for retaining walls and decorative edges.
They are also decorative in function and serve as a filtration mechanism to filter water behind walls (often used in cemeteries and other instances).

Sandstone is a more natural-looking barrier, and its pH-neutral, alkaline nature is also incredibly kind and exciting to creatures like our little friends, the frogs.
Any wildlife living in moist environments (amphibians, etc.) loves sandstone for creek linings and silt barriers.
They also love it because it is a safe environment for them, giving them a natural protective barrier where they can hide and populate around and within.
GOSFORD QUARRIES SANDSTONE GABION PRODUCT
“Gosford Quarries 75mm to 150mm sandstone spalls are available for gabion cages for retaining walls, both decorative and functional. We have different sizes in 40mm-80mm and 50-90mm usually used to retain walls as well.”
Gabions can also be used to enter stormwater pipes, filter and stop rubbish from entering waterways, catch bottles, etc. Stormwater aprons (also known as rip-rap aprons), gabion cages, and gabion mats can also be installed.
Gabion mats lay flat, and Gabion Cages are stacked upon them. Rivers and creek canals feature gabion installations as part of revampment work in civil design projects.
Rip Rap is terminology similar to the definition and specification of gabion rock. However, it may be specified and called thus due to specifications in size.
Rip Rap Aprons are angle-faced or angled embankment rocks or amour. Rip Rap rock keeps slopes and inclines stable, and rip rap also stops erosion.
General stormwater drainage is also another function of gabion, with sediment control stopping runoff and acting as a barrier before the water reaches creeks, rivers, and, eventually, the ocean.
When considering marine sea walls, Dee Why, for example, where splash and wave zones are formidable, large sandstone boulders are needed.
SANDSTONE AS A FILTRATION MATERIAL
“Sandstone civil material is an excellent filtration material, helping to filtrate water and purify it as the water passes through its sediments. Sandstone is mostly pH neutral, and water filtering through it usually results in the same pH levels.
Water passing through a medium, where it splashes has a greater introduction of ‘air’, produces more oxygen acting as another purification process. Sandstone also acts to remove and catch (and reduce) sediment.”
Gosford Quarries supplied approximately 1000 tonnes of sandstone civil materials in the civil erosion prevention project at Colloray.
At Bankstown Airport, sandstone was used as a treatment rock for the big canal waterway, catching stormwater from factories and any potential contaminants and materials from entering the canal.
GOSFORD QUARRIES EXPERT CONSULTATION AND ADVICE FOR CIVIL CONSTRUCTION, CIVIL ENGINEERING AND PUBLIC WORKS
The expert sandstone team at Gosford Quarries is here to discuss your Civil Construction, engineering, and Public Works Projects at any scale.
We can work with you from conception to construction and support the realisation of your design and architectural vision for any civil or public construction project.
PEACE OF MIND WHEN YOU CHOOSE GOSFORD QUARRIES AS YOUR CIVIL SANDSTONE SUPPLIER
Gosford Quarries sources ALL of our 100% Australian raw and crushed civil sandstone materials from exclusively owned quarries.
All our products are tested to reach a benchmark of quality that we never compromise. That’s why landscape Architects, Governments, and councils choose Gosford Quarries sandstone for peace of mind.
Gosford Quarries is local to supply Sydney Councils, and this is one of our greatest strengths as a sandstone supplier in the Australian market.
Council landscaping projects particularly want to incorporate quality Australian sandstone into their designs and public spaces.
Gosford Quarries are not just known for the quality of our products, our adherence to Standards, our quality controls, our expert knowledge, our robust supply capabilities to scale and our technical capabilities with the latest technological advances.
Gosford Quarries is also known for its word. It does what it says and constantly looks for ways to improve its customer service and ensure its customers are confident in and can trust the Gosford Quarries name.
Gosford Quarries is the go-to for all things sandstone in four sectors: residential, commercial, civil, and heritage sandstone projects. This is particularly true in Civil Sandstone Supply.
“Gosford Quarries are keen to grow their civil client base and public work contracts and they would love to hear from you to show you why they are Australia’s Number 1 Sandstone Supplier.”