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Executive summary Brick and block pricing is easy to compare. Structural performance is not—and that’s where costly failures happen. Brick compressive strength (measured in MPa) is one of the simplest, most important indicators of whether a masonry unit is fit for its intended use. In South Africa, deemed-to-satisfy wall construction under the National Building Regulations is tied to minimum average compressive strengths for masonry units (with different thresholds for single

Executive summary Cement brickwork failures rarely come from a single “bad brick.” Most defects are created on site through avoidable errors: incorrect mortar batching, weak bonding practices, inadequate curing/protection, poor damp-proof detailing, wrong strength (MPa) selection, and careless handling/storage. These mistakes usually show up later as cracks, damp patches, efflorescence, staining, joint failure, or uneven settlement—and they can become costly disputes because

Why accurate estimating matters on real sites Bricks (and paving) are priced and delivered in large quantities, so a small estimating mistake can quickly become a budget, scheduling, or availability problem. Most professional estimating methods are built around the idea of modular planning—the unit size plus the mortar (or joint) space—because that is what determines how many units fit into a square meter of wall or paving. Accurate estimating also reduces site disruption. Ru

Author:  Bertus van der Merwe Date Published:  03 February 2026 Proper on-site storage of bricks is essential for preserving their quality and  for avoiding costly disputes later. Bricks are strong but porous: if left on wet or dirty ground or left unprotected, they can absorb moisture and soluble salts, leading to efflorescence, cracking or reduced strength. By following best practices—such as using a solid base, secure stacking and rain covers—you protect your investment a

Author:  Bertus van der Merwe Date Published:  27 January 2026 Bricks come in two main drying types – air-dried  (unfired) and kiln-dried  (fired) – and this manufacturing difference has a direct impact on project schedules. Air-dried bricks are left to cure naturally, while kiln-dried bricks are hardened in a high-temperature furnace. Ancient builders first used sun-dried mudbricks in warm climates, but by 3500 BC the invention of kilns meant bricks could be made “without

# Understanding MPa: The Key to Choosing Quality Bricks Author: Bertus van der Merwe Date Published: 20 January 2026 First, let’s demystify MPa . An MPa (megapascal) is a measure of pressure or stress. In bricks, it refers to compressive strength . This metric indicates how much load a brick can endure before it crushes. A higher MPa rating signifies a stronger brick. For instance, a 7 MPa brick can withstand roughly seven million newtons per square meter of pressure in a