35 km East of Midrand - close to the Rietvleidam
Tel: 011 848-2000
Click here to view our Map

  • -25° 58’ 54.03”
  • +28° 18’ 26.84”

General Manager: Dawid Nagel
Sales enquiries: Yvonne Maluleka & Precious Mdluli

Western Cape

South of Atlantis between N7 & R27
Tel: 021 572-2551
Alt Nos: 079 769 0063 or 071 542 8436
Click here to view our Map

  • -25° 58’ 54.03”
  • +28° 18’ 26.84”

Chief Executive Officer: Jan Vorster
Sales Enquiries: Yolanda Roos
General Enquiries: Pauline Page

Gauteng (Midrand) 
Tel (011) 848-2000 |
Western Cape (Atlantis) 
Tel (021) 572-2551 | Fax (021) 572-2552 |

What should I look for when buying bricks?

Properties that require consideration when buying or specifying clay brick are:

  • Compressive strength (varies from 7MPa to 50MPa)
  • Water absorption (face brick up to 10%, NFP up to 16%)
  • Modulus of rupture - strength in bending
  • Moisture expansion - important when detailing longer structures

Irreversible moisture expansion takes place with all clay products predominently during the first 24 months after manufacture. This expansion is dependent on the clay minerals present in the product and the firing temperature of the process. The movement takes place in both the vertical and horizontal directions.

  • Initial rate of absorption.

This affects the bond between the mortar and the brick. Bricks with high rates of absorption may require pre-wetting well before laying to prevent absorbing excessive water from the mortar mix. Trial and error experiments when bricks arrive on site will determine the need to pre-wet bricks.

FAQ Category: 

  • Buying Bricks