Grey Blocks & Bricks

Great prices. No hassles.

We are the leading manufacturer & retailer of Grey Blocks

Concrete Grey Blocks are manufactured utilising recycled fly ash to provide a lightweight, high strength product. Concrete Grey Blocks are commonly used for construction on houses, schools, and various commercial projects.

Choosing the right Concrete Grey Block 

Before selecting, you should ensure this product meets your projects requirements. Certain Concrete Grey Blocks are lightweight, heavy duty and/or fire rated. Please check the Additional Information. Please consult National Masonry™ if you are unsure on the best Concrete Grey Block for your construction needs.

Which colour

Our blocks come in Natural Grey



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
10.01Standard390x190x908.5195(ƒ’uc = 15MPa)
10.02Three Quarters290x190x906.7240(ƒ’uc = 15MPa)
10.03Half190x190x904.4360(ƒ’uc = 15MPa)
10.25L Shape Corner Return390x190x90/19011.4120(ƒ’uc = 15MPa)
10.71Standard Half Height390x90x904390(ƒ’uc = 15MPa)
10.31Solid390x190x9012.4156(ƒ’uc = 15MPa)



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
12.401FRReduced Core390x190x11013.11202 hour insulation FRL(ƒ’uc = 15MPa)1 in 5 = universals (bolster 1/2 or 3/4 on site)



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
15.01Standard Hollow390x190x14010.881442 hour insulation FRL(ƒ’uc = 15MPa)
15.02Three Quarter290x190x1408.91602 hour insulation FRL(ƒ’uc = 15MPa)
15.03Half190x190x1405.62402 hour insulation FRL(ƒ’uc = 15MPa)
15.09Control Joint390x190x14011.11202 hour insulation FRL(ƒ’uc = 15MPa)
15.10Control Joint Half190x190x1406.82402 hour insulation FRL(ƒ’uc = 15MPa)
15.12Lintel390x190x14016.21202 hour insulation FRL(ƒ’uc = 15MPa)
15.20Knockout Bond Beam390x190x14010.61202 hour insulation FRL(ƒ’uc = 15MPa)
15.22Seven Eighths340x190x1409.71252 hour insulation FRL(ƒ’uc = 15MPa)
15.25Corner Return390x190x140/19013.921052 hour insulation FRL(ƒ’uc = 15MPa)
15.42Channel390x190x14010.51442 hour insulation FRL(ƒ’uc = 15MPa)
15.45Cleanout390x190x1409.891202 hour insulation FRL(ƒ’uc = 15MPa)
50.45Cleanout Biscuit & Spring4.11202 hour insulation FRL(ƒ’uc = 15MPa)
15.48H Block390x190x14011.011442 hour insulation FRL(ƒ’uc = 15MPa)
15.709Thick Wall390x190x14017.861202 hour insulation FRL(ƒ’uc = 15MPa)Pallet contains 115 x 15.709 & 10 x 15.703
15.703Thick Wall Half190x190x14010.12
N/A2 hour insulation FRL(ƒ’uc = 15MPa)Not sold separately
15.71Standard Half Height390x90x14052882 hour insulation FRL(ƒ’uc = 15MPa)



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
20.01Standard390x190x19013.291082 hour insulation FRL(ƒ’uc = 15MPa)
20.02Three Quarters290x190x1909.41442 hour insulation FRL(ƒ’uc = 15MPa)
20.03Half190x190x1907.31802 hour insulation FRL(ƒ’uc = 15MPa)
20.03CCurved Wall Half190x190x190/1406.31802 hour insulation FRL(ƒ’uc = 15MPa)
20.04Quarter190x190x904.33602 hour insulation FRL(ƒ’uc = 15MPa)
20.09Full Control Joint390x190x19014.2
722 hour insulation FRL(ƒ’uc = 15MPa)1 pallet = 72 x 20.09 and 20.10 (Sold in pairs)
20.10Control Joint Half190x190x1908.5722 hour insulation FRL(ƒ’uc = 15MPa)1 pallet = 72 x 20.09 and 20.10 (Sold in pairs)
20.13Half Lintel190x190x1908.22202 hour insulation FRL(ƒ’uc = 15MPa)
20.18Deep Lintel390x190x19014.91252 hour insulation FRL(ƒ’uc = 15MPa)
20.20ADeep Channel Biscuitless Knockout390x190x19012.61082 hour insulation FRL(ƒ’uc = 15MPa)
20.21AKnockout Bond Corner390x190x19012.41082 hour insulation FRL(ƒ’uc = 15MPa)
20.22Seven Eighths340x190x19012.741082 hour insulation FRL(ƒ’uc = 15MPa)
20.25Three Quarter Lintel290x190x190101652 hour insulation FRL(ƒ’uc = 15MPa)
20.40Half Height Sill190x90x1904.483602 hour insulation FRL(ƒ’uc = 15MPa)
20.42Channel390x190x19013.091082 hour insulation FRL(ƒ’uc = 15MPa)
20.45Cleanout390x190x19011.621082 hour insulation FRL(ƒ’uc = 15MPa)
20.48H Block390x190x19011.731082 hour insulation FRL(ƒ’uc = 15MPa)
20.60Bonded Pilaster Return390x190x39017.9602 hour insulation FRL(ƒ’uc = 15MPa)
20.71Standard Half Height390x90x1907.32162 hour insulation FRL(ƒ’uc = 15MPa)
20.140Standard390x140x190111082 hour insulation FRL(ƒ’uc = 15MPa)
20.748 - background needs to be removedSquint290x190x19010.2902 hour insulation FRL(ƒ’uc = 15MPa)
20.925Single Core390x190x19016.61082 hour insulation FRL(ƒ’uc = 15MPa)
50.31Capping Tile390x40x1905.72702 hour insulation FRL(ƒ’uc = 15MPa)
50.45Biscuit & Spring4.11202 hour insulation FRL(ƒ’uc = 15MPa)



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
30.01Full Length Standard390x190x29018.9722 hour insulation FRL(ƒ’uc = 15MPa)
30.02Three Quarter / 300mm Pier
290x190x29015.2802 hour insulation FRL(ƒ’uc = 15MPa)
30.03 (20.02)Half Length290x190x1909.41442 hour insulation FRL(ƒ’uc = 15MPa)
30.04 (10.03)Quarter Length290x190x906.72402 hour insulation FRL(ƒ’uc = 15MPa)
30.18Deep Lintel390x190x29017.1852 hour insulation FRL(ƒ’uc = 15MPa)
30.42Channel390x190x29021602 hour insulation FRL(ƒ’uc = 15MPa)
30.45Cleanout390x190x29016.65602 hour insulation FRL(ƒ’uc = 15MPa)
50.45Cleanout Biscuit & Spring4.11202 hour insulation FRL(ƒ’uc = 15MPa)
30.48H Block390x190x29014.52722 hour insulation FRL(ƒ’uc = 15MPa)
30.925Standard390x190x29017.5722 hour insulation FRL(ƒ’uc = 15MPa)
40.925400 Pier Block390x190x39023.9542 hour insulation FRL(ƒ’uc = 15MPa)
50.31Capping Tile390x40x1905.72702 hour insulation FRL(ƒ’uc = 15MPa)



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
20.48SBH Block400x190x19013.190No mortar required in perps (vertical joints)
20.21SBFull Length Corner400x190x19014.890No mortar required in perps (vertical joints)
20.03SBHalf200x190x1907.1165No mortar required in perps (vertical joints)



Product ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletNotes
12.715LWCommon Brick Super Light230x76x1102.7600Not load bearing
12.715STCommon Brick Load Bearing230x76x1103.4500Load bearing
12.796LWSpeed-E Brick Super Light230x162x1104.75300Not load bearing
12.796STSpeed-E Brick Load Bearing230x162x1106.9250Load Bearing



Website ImageProduct CodeProduct NameDimensionsWeight per unit (kg)Units per palletFire RatingMPANotes
20.01Standard390x190x19017.810840MPa
20.02Three Quarters290x190x19012.614440MPa
20.03Half190x190x1909.918040MPa
20.42Channel390x190x19017.110840MPa
20.45Cleanout390x190x19015.310840MPa
20.48H Block390x190x19015.910840MPa
20.71Half Height390x90x1908.321640MPa
30.45Cleanout390x190x29021.66040MPa
30.48H Block390x190x29019.17240MPa
30.925Single Core390x190x29022.67240MPa



Product PhotoProduct NameDimensionsSizeNotes
Bagged Mortar SandBulka Bag1200kgIdeal for blocks with enhanced workability
Bagged Mortar SandBulka Bag620kgIdeal for blocks with enhanced workability
Concrete BlendBulka Bag1200kgBlended Sand & Aggregate - just add cement and water
Cement - GP Grey or Off White20kg
Off White Cement20kg
Premix Coloured Mortar - White20kgBlended cement, sand & oxide - just add water
Premix Coloured Mortar - Grey20kgBlended cement, sand & oxide - just add water
Premix Coloured Mortar - Charcoal20kgBlended cement, sand & oxide - just add water
Mortar Additive (Tech Dry)5L, 20LMortar additive to improve water resistance & reduce efflo
Brickies Mate1LMortar Plasticiser preferred by most brickies
Environex Clearseal Sealer2L, 10L, 20LEconomical water based single coat pre-sealer
Environex Synergy Sealer2L, 10L, 20LPremium, penetrating, surface consolidating sealer - resists salt
Environex Hi-Lite Sealer2L, 10L, 20LPremium, colour enhancing semi-penetrating sealer
Enviroshield Enhancer Plus Sealer2L, 10L, 20LPremium, colour enhancing semi-penetrating sealer
Enviroshield Consolidator Plus Sealer2L, 10L, 20LEconomical, penetrating, surface consolidating sealer - resists salt
Environex Anti-Eff Efflorescence Cleaner1L, 5L, 15LSpecially formulated acidic cleaner for removing mortar and efflorescence
Environex Maestro Cleaner1L, 5LSpecially formulated chlorinated cleaner for removing moss, algae, mold & organic stains

Concrete Grey Blocks Delivery Areas

All our Concrete Grey Blocks and accessories can be picked up or we can deliver to the following areas:

South Queensland

Brisbane, Gold Coast, Sunshine Coast, Ipswich, Logan, Northern NSW, Toowoomba.

New South Wales

Newcastle, Lake Macquarie, Port Macquarie, Gosford, Hunter Region, Central Coast.

Don’t see your location here? Contact us to find a reseller near you.

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Pallet Pickup

We'll come and pickup the pallets. Either call us or use the pickup form.

Contact Us

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