Product Specifications
Explore detailed product specifications for Boulder Stone’s high-quality sandstone.
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Sandstone Blocks and Boulders - Product Specifications
A Grade 6 sawn sided
Size | Weight |
| 400 x 400 x 1000-1100mm approx. | 400kgs |
| 500 x 500 x 1000-1100mm approx. | 600kgs |
| 600 x 600 x 1000-1100mm approx. | 900kgs |
| 600 x 400 x 1000-1100mm approx. | 600kgs |
The A Grade (6 Sawn Sided) blocks are ideal for seating around fire pits or in yarning circles at schools as they have a smoother finish on them. They are great for projects that will see all sides of the blocks.
Tolerance Levels A Grade 6 sawn sided
6 sawn sided
Face height – plus or minus 30mm
Length – 1000-1100mm
Front to back – plus or minus 30mm
A Grade 5 sawn sided
Size | Weight |
| 400 x 400 x 1000-1100mm approx. | 400kgs |
| 500 x 500 x 1000-1100mm approx. | 600kgs |
| 600 x 600 x 1000-1100mm approx. | 900kgs |
| 600 x 400 x 1000-1100mm approx. | 600kgs |
A Grade (5 Sawn Sided) Sandstone Blocks are cut using an excavator with a large wheel saw, and they are slightly more precise in their measurements compared to the B Grade (2-4 sawn sided) and 5 sawn sided sandstone blocks.
Tolerance Levels A Grade 5 sawn sided
5 sawn sided
Face height – plus or minus 30mm
Length – 1000-1100mm
Front to rough back – plus or minus 100mm
B Grade Premium 4 – 5 sawn sided
Size | Weight |
| 400 x 400 x 1000-1100mm approx. | 400kgs |
| 500 x 500 x 1000-1100mm approx. | 600kgs |
| 600 x 600 x 1000-1100mm approx. | 900kgs |
| N/A | N/A |
B Grade Premium (4-5 sawn sided) blocks are an excellent substitute for A Grade 5 and 6 sawn sided blocks. These blocks have 5 sawn sides and a rough back, which is an uncut side.
Tolerance Levels of B Grade Premium (4-5 sawn sided)
Face height – plus or minus 80mm
Lengths – worst case 800-1200mm, however predominantly 1000-1100mm
B Grade 2 – 4 sawn sided
Size | Weight |
| 400 x 400 x 1000-1100mm approx. | 400kgs |
| 500 x 500 x 1000-1100mm approx. | 600kgs |
| 600 x 600 x 1000-1100mm approx. | 900kgs |
| N/A | N/A |
B Grade (2-4 Sawn Sided) blocks are the initial cut blocks in the quarry, they are the reject out of the cut blocks. They may have the most irregular shapes and measurements and can be angled and concave blocks. B Grade (2-4 sawn sided) blocks should have 2 opposite sides suitable for stacking and can still be used for retaining walls.
Tolerance Levels of B Grade (2-4 sawn sided)
2 – 4 sawn sided
Face height – plus or minus 100mm
Length – worst case 500-1500mm, however predominantly 1000-1100mm
Product specifications of B Grade 2-4 sawn sided Sandstone Blocks
Hammered Random Boulders
300-600mm x random lengths approx.
Sold per 12 tonne body load and 25 tonne Truck and Dog load
These Hammered Random Boulders are quite blocky and generally have at least one flat face that is great for when using for retaining. Product specifications of Hammered Random Boulders.
Quad Sawn Blocks B Grade
500 x 500 x 1000mm approx. 600kgs each
500 x 500 x 2000mm approx. 1200kgs each
Quad Sawn bottom and both ends with 2 rough faces
Tolerance Levels of Quad Sawn B Grade Blocks
1m Grade B Sandstone Logs – 900/1100 (L) X 350/550 (W) X 450/550 (H) Quarry Sawn and Split, Quarry Run, No Colour Selection
2m Grade B Sandstone Logs – 1900/2100 (L) X 350/550 (W) X 450/550 (H) Quarry Sawn and Split, Quarry Run, No Colour Selection
Product specifications of Quad Sawn Blocks
Quad Sawn Blocks B Grade Premium
500 x 500 x 1000mm approx. 600kgs each
500 x 500 x 2000mm approx. 1200kgs each
Quad Sawn bottom and both ends with 2 rough faces
Tolerance Levels of Quad Sawn B Grade Premium Blocks
1m Grade B Premium Sandstone Logs – 950/1050 (L) X 450/550 (W) X 480/530 (H) Quarry Sawn and Split, Quarry Run, No Colour Selection
2m Grade B Sandstone Logs – 1900/2100 (L) X 450/550 (W) X 480/530 (H) Quarry Sawn and Split, Quarry Run, No Colour Selection
The number of blocks per truckload will depend on the truck’s tare weight and its maximum carrying capacity.
The rough back of sandstone blocks may feature concave, convex, or angled surfaces, resembling a jackhammered texture. This face is typically positioned at the back of the wall.
Please note: All dimensions provided for our products are approximate.
As with any natural material, variations in colour, texture, shape, thickness, and composition are to be expected. Boulder Stone is not responsible for these natural variations as sandstone is directly mined from the earth. Transport services are provided by subcontractors, and once a truck is directed to enter private property, the customer or landowner assumes responsibility for any recovery costs, downtime, or potential damages. All reasonable care is taken by the client during the process.
Any concerns regarding product quality or delivery must be reported in writing within 24 hours of delivery. We have a clear complaints protocol in place to handle such matters.
