Cape Town · Western Cape · Since 1974

Quality You
Can Build On

AJ Onsite Bricks & Blocks has been manufacturing and supplying quality concrete bricks and blocks to the Western Cape for over 40 years. Trusted by builders, developers, and contractors across the region.

40+
Years in Business
6+
Product Types
1–35t
Fleet Capacity
100%
SA Manufactured
MA190 MA140 MA90 Hollow Maxi 7mpa Hollow Maxi 14mpa Solid Imperial Sales & Quantity Estimates Transport 1–35 Ton Western Cape Delivery MA190 MA140 MA90 Hollow Maxi 7mpa Hollow Maxi 14mpa Solid Imperial Sales & Quantity Estimates Transport 1–35 Ton Western Cape Delivery
Concrete Manufacturers Association member
Proud CMA Member

AJ Onsite Concrete is a certified Producer Member of the Concrete Manufacturers Association (CMA), Membership No. AJO-2603. That's your assurance that our products are made to recognised industry quality standards.

Our Story

40+ Years of
Building the Cape

AJ Onsite Bricks & Blocks has been providing quality bricks and construction materials to the commercial and residential construction industry in the Western Cape for over 40 years. With a commitment to quality and innovation, the company has established itself as a leader in the industry.

The family-owned business produces a wide range of high-quality concrete bricks and blocks used in construction projects of varying sizes. As a manufacturer, we are able to moderate and offer the best prices.

We manufacture all our own concrete bricks and blocks at our plant in Blackheath, using high-quality raw materials to ensure consistent compressive strengths and durable, long-lasting products. A rigorous quality control process is in place. Every batch is subjected to a series of tests and inspections to make sure it meets the specified requirements and standards.

We believe in honesty, integrity and simplicity. These are the core values that underpin all our engagements. We urge you to test our promise. Connect with our sales consultants and let them simplify your task and save you money.

Andrew & Christina Cloete
Founders
AJ Onsite team member in branded workwear
Product Spectrum

Our Range

All products are manufactured at our Blackheath facility. Contact our sales team with your building plan for a free, non-obligatory quantity estimate.

MA190 hollow concrete block
Hollow Block
MA190
  • Dimensions390 × 190 × 190mm
  • Strength7–10 mpa
  • Coverage12.5 / m²
  • Per Pallet90
Common use: Boundary walls.
MA140 hollow concrete block
Hollow Block
MA140
  • Dimensions390 × 140 × 190mm
  • Strength5 / 7 MPa
  • Coverage12.5 / m²
  • Per Pallet114
Common use: Single & double-skin walling, boundary walls and structural applications.
MA90 hollow concrete block
Hollow Block
MA90
  • Dimensions390 × 90 × 190mm
  • Strength7–10 mpa
  • Coverage12.5 / m²
  • Per Pallet150
Common use: Internal walls.
Hollow Maxi 7mpa block
Hollow Maxi
Hollow Maxi 7mpa
  • Dimensions220 × 90 × 115mm
  • Strength7 mpa
  • Coverage35 / m²
  • Per Pallet440
Common use: Houses, apartment blocks, offices & boundary walls.
Hollow Maxi 14mpa block
Hollow Maxi
Hollow Maxi 14mpa
  • Dimensions220 × 90 × 115mm
  • Strength14 mpa
  • Coverage35 / m²
  • Per Pallet440
Common use: Houses, apartment blocks, offices & boundary walls.
Imperial Eco Brick
Eco Brick
Imperial Eco Brick
  • Dimensions220 × 106 × 72mm
  • StrengthNFX 14 / NFP 7 MPa
  • Coverage52 / m²
  • Per Pallet500
Common use: Houses, apartment blocks, offices & boundary walls.
Our Services

Manufacturing, Supply & Delivery

As the manufacturer, we manage every stage in-house, from raw materials through production at our Blackheath plant to delivery on your site. That means better prices, consistent quality, and no delays.

01
Sales & Quantity Estimates

Send our Sales Department your building plan and we'll work out exactly what you need, free and with no obligation. Accurate estimates mean no guesswork and no money wasted on excess stock.

Free, no-obligation quantity estimates from a friendly team that knows the products.
02
Transport & Delivery

We run a full fleet of trucks from 1 to 35 tons, so we can match the right vehicle to your order and keep turnaround fast. Delivery throughout the Western Cape.

Delivery fees depend on your area. Contact us for a quote to your site.
AJ Onsite forklift loading bricks onto a delivery truck at the Blackheath yard
We control the entire process

We own our trucks and run the whole chain in-house: hauling in raw materials, manufacturing at our Blackheath plant, and delivering finished bricks and blocks to your site. No middlemen, no delays.

Get in Touch

Request a
Free Quote

Our friendly team is ready to assist you. Reach out for a quote, a quantity estimate, or any product enquiry.

Address
16 Sysen Road, Blackheath, 7580
Phone
021 905 3630
Fax
021 905 3635
Email
sales@aj-onsite.co.za
Operating Hours
Mon–Thu: 07:00–17:00
Friday: 07:00–16:00
Saturday: 08:00–13:00
Sun & Public Holidays: Closed
Send an Enquiry
The AJ Group

Part of the AJ Group

AJ Onsite Bricks & Blocks is part of a family of businesses serving the Western Cape building trade. Explore our sister companies:

AJ Brick Sales

Your source for a wide range of quality bricks and building supplies across the Western Cape.

Visit ajbricksales.co.za
AJ Simulated Stone

Premium simulated stone products for cladding, finishes and decorative applications.

Visit ajsimulatedstone.co.za