What Are Clay Bricks Red (NFX Hard)?

Clay Bricks Red (NFX Hard) are non-facing plaster bricks manufactured from natural clay and fired at high temperatures to achieve excellent strength and durability. These bricks are intended for structural applications and are typically plastered, painted, or clad once installed.

The red colour comes from the natural clay composition and firing process, making these bricks a popular and cost-effective choice for load-bearing walls and foundations.

Understanding the NFX Classification

The term NFX is a South African clay brick classification defined under SANS 227:

N – Non-facing: The brick is not intended to remain exposed.

F – Durability class: Suitable for general building conditions.

X – Plastered or protected use: Requires plaster, paint, or cladding for long-term weather protection.

NFX bricks are structural bricks, meaning they are designed for strength rather than appearance. They are commonly used where the final wall finish will hide the brickwork.

Key Features & Benefits

High compressive strength suitable for load-bearing walls

Manufactured from quality natural clay

Complies with SANS 227 building standards

Cost-effective solution for large construction projects

Excellent durability once plastered or protected

Consistent size for faster, cleaner bricklaying

Typical Applications

Residential housing construction

Foundations and boundary walls

Internal and external walls (to be plastered)

Commercial and industrial buildings

Double-storey and multi-storey structures

Why Choose Red NFX Hard Clay Bricks?

Red NFX Hard clay bricks are trusted by builders and contractors throughout South Africa for their structural reliability, affordability, and proven performance. When plastered or clad, they form a strong, long-lasting wall system suitable for both new builds and renovations.