A useful clay wall brick evaluation starts with the intended wall assembly, not with color alone. The project team should identify where the brick will be used, how it will be supported, what exposure it will face and which evidence is required by the local specification. Only then can samples, dimensions and installation details be compared on a consistent basis.

The term clay wall brick can describe products with different constructions and roles. A hollow facing unit, a solid brick and a thin adhered unit are not automatically interchangeable. If the design requires another format, review LOPO’s terracotta brick range, thin facade brick options and long brick formats before preparing the submittal.

Start with the wall application

Record whether the brick is intended for an exterior facade, an interior feature wall, a screen, a landscape element or another use. Also state whether the design is loadbearing, supported as veneer, adhered to a prepared substrate or attached through a purpose-designed system. The applicable construction method must be confirmed by the project’s architect and engineer; it should not be inferred from a product photograph.

Exposure is equally important. Orientation, rainfall, freeze-thaw conditions where relevant, salt or pollution exposure, cleaning access and contact with adjacent materials can change the evidence and detailing required. Local codes and project specifications govern acceptance, so a supplier’s general description is only a starting point.

Clay wall brick evaluation table

Review geometry before approving appearance

Brick proportions influence coursing, joint layout, openings and the location of cut units. Ask for drawings that distinguish nominal module dimensions from the manufactured unit dimensions. Establish which face is exposed, whether both ends may be visible and how corners, returns, sills and transitions will be resolved.

Do not approve unusual shapes from a single rendering. A physical sample can reveal edge character and texture, while a trial layout shows the combined effect of unit size and joint width. Where several profiles or lengths are mixed, provide an elevation or schedule that identifies their distribution.

Define color and surface variation

Fired clay surfaces can show variation that is part of the intended architectural effect. The specification should describe the acceptable range rather than relying on a single digital image. Review several loose samples and, for visually sensitive work, a larger sample panel under the lighting and viewing distance expected on site.

Texture also affects how a wall reads. Smooth, combed, grooved or handmade-style surfaces create different shadow lines and may respond differently to handling and cleaning. Confirm the exact finish name, exposed face and any directional installation requirement in the approval record.

Match evidence to the project requirement

Ask for evidence that corresponds to the proposed unit and intended application. The required properties may include dimensional consistency, water-related behavior, strength, durability or other criteria named by the project specification. Test methods and acceptance thresholds vary by market, so the architect, engineer or code consultant should identify the applicable standard.

Check that each report names or clearly represents the submitted product. A report for a different format, body composition or production route may not answer the project’s question. Manufacturing and quality-control discussions can begin through LOPO’s factory overview, but project acceptance should remain evidence based.

Coordinate installation and interfaces

The brick is only one part of the wall. Coordinate substrate condition, cavity or drainage design, membranes, flashings, shelf angles or other support, joints, corners and interfaces with windows and doors. Materials that touch the brick should be checked for compatibility, staining risk and movement.

A project mockup is useful when appearance and detailing must be judged together. It can establish the accepted blend, joint profile, workmanship, cleaning method and transition details. Record the approved mockup so it remains a practical reference during installation.

Prepare a complete procurement checklist

• Identify the product code, construction, exposed face and orientation.
• Issue dimensioned drawings for standard and special units.
• Approve a representative color and surface range, not one isolated piece.
• List project-required tests and verify that reports cover the proposed product.
• Coordinate the installation assembly with the responsible design professionals.
• Allow for corners, cuts, breakage, mockups and future replacement stock.
• Agree on batch, labeling, packing, delivery sequence and site storage requirements.

For a project-specific review, send the application, drawings, target appearance, required evidence and delivery location through LOPO’s contact page. Clear inputs make it easier to identify suitable samples and highlight decisions that still belong to the project team.

Frequently asked questions

Is a hollow clay wall brick suitable for every facade?

No. Suitability depends on the unit, wall assembly, exposure, structural support, applicable code and project specification. Confirm the proposed construction with the responsible architect and engineer.

Can a digital image be used for final color approval?

It is better used for early selection. Final approval should be based on representative physical samples and, when appearance is critical, a sample panel viewed under relevant conditions.

What should be included in a brick sample request?

Include the application, preferred size or module, surface, color range, visible faces, quantity, location and any standards or performance criteria named in the specification.

When are special-shaped units worth considering?

They may simplify corners, returns or transitions and reduce visible cuts. Their feasibility, tolerances, quantity and lead time should be reviewed before the facade layout is finalized.