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Grey Blocks

Introducing Australia’s Lightest Concrete Block

The Lightweight Alternative

Grey Block laid in a wall

Weighing in at just 11.5 kilograms, Apex Masonry manufactures the lightest structural concrete block available on the Australian market.

At Apex Masonry, we respond to every day challenges with practical innovations that make our products easier to use. Our design team and production engineers have developed a unique mix of basalt, bottom ash and coarse fly ash delivers Australia’s only 11.5kg concrete block unit – increasing strength while reducing weight with 30 percent recycled materials.

Speed up your block laying process by up to 20%

Apex Masonry’s range of concrete blocks offer a complete building system with H blocks, channels, knock-outs and many fractions. Save time and reduce costs while handling a lighter and smarter block with grab points for easy handling.


Load Bearing & High Strength MPA Blocks

To answer every day practical challenges onsite – Apex Masonry high strength blocks are tinted to immediately distinguish them from the standard concrete block range:

  • Unique colour identifier for ease of handling, storage and engineering sign-off
  • Testing certificates for extra strength blocks available on request

Manufactured & Tested to Australian Standards

Apex Masonry concrete blocks are manufactured in accordance with Australian Standard AS/NZS4455.1:2008 and tested under Australian Standard AS4456:2013:

  • Lightweight & loadbearing
  • Fire & sound rating
  • Test reports available
  • Lightweight

  • Compressive Strength rated

  • Acoustic rated

  • Insulation rated

  • Fire rated

  • Grab points for easy handling

  • 30% recycled materials

  • Always straight & square

  • Innovative designs


  • Load bearing & non-load bearing walls
  • Veneer walling
  • Commercial & residential buildings
  • Retaining Walls
  • Firewalls & Partition Walls
  • Fences & Screen Walls
  • Basement & Carpark Walls
  • Planter boxes
  • Entrance Walls
  • Letterboxes
  • Posts & Piers

  • Grey

Please note: Whilst all care has been taken to provide you with a good indication of colour, you should always sight product samples before use. Due to natural variations in raw materials, colours may vary from the images provided.

Block Formats


Size: See Full Block list

Material: Concrete

How many standard blocks are there to a square metre?

12.5; 2.5 blocks to a lineal metre

How much blockfill is required when corefilling the blocks?

Below are recommendations only - not guaranteed amounts

150mm Standard Blocks - 0.53 m³ of concrete/100 blocks or 1 m³ of concrete/188 blocks.

200mm Standard Blocks - 0.86 m³ of concrete/100 blocks or 1 m³ of concrete/121 blocks.

200mm H Blocks - 0.886 m³ of concrete/100 blocks or 1 m³ of concrete/116 blocks.

300mm Standard Blocks -1.22 m³ of concrete/100 blocks or 1 m³ of concrete/82 blocks.

300mm H Blocks -1.37 m³ of concrete/100 blocks or 1 m³ of concrete/73 blocks.

Are your grey blocks fire rated?

Yes, please see our Fire & Acoustic brochure for more information.

Apex Masonry Logo White

Quality bricks, blocks, pavers and retaining walls for South-East Queensland


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