Terracotta panel selection becomes manageable when the team agrees which factors decide acceptance and when each must be proven. Product appearance is only one gate. Wall functions, geometry, attachments, manufacturing, programme, environmental scope, commercial responsibility and maintenance all affect the result. Rank these factors early, then convert them into a controlled submittal and approval plan.
Factor 1: define the building and decision criteria
Record project location, climate, height, occupancy, facade zones, substrate, design life assumptions, maintenance strategy, fire route, loads, energy targets, programme and procurement model. Identify the authorities, design professionals, contractor, installer and owner representatives who approve different parts of the facade.
Turn priorities into weighted criteria. A civic entrance may place high value on colour range and depth; a tall exposed elevation may prioritize engineering, replacement access and water management; a fast programme may favour established tooling. State mandatory thresholds separately from preferences. Otherwise, a visually attractive sample can distract from an unresolved system risk.
Issue a decision map showing which factors must close at concept, tender, technical submittal, production release and handover. Link each approval to the information available at that stage. This prevents an early aesthetic endorsement from being mistaken for final technical or commercial acceptance.
Factor 2: select a buildable product and module
Define product family, nominal dimensions, section, orientation, mass, finish, edge condition, fabrication and unit types. Ask the manufacturer for the current feasible range for the exact body and profile. Old maximum dimensions, standard colour counts or generic customization statements are not a reliable basis for today’s order.
Coordinate panel module with structural grid, openings, corners, parapets, bases, movement joints and access. Check yield and cut strategy as well as the ideal elevation. A module that looks efficient on a flat wall may create many specials at transitions, adding tooling, inspection, packing and replacement complexity.
Factor 3: control appearance with a sample hierarchy
| Review stage | Decision | Release evidence |
|---|---|---|
| Palette samples | Body, colour family, gloss and texture direction | Shortlist with codes and comments |
| Full-size units | Surface, edge, bow, joints and fabrication | Measured and labelled approval set |
| Representative bay | Range, repetition, corners, supports and distance view | Signed visual and technical review record |
| Production reference | Acceptable lot compared with retained range | Inspection results and release status |
Specify an accepted range rather than one perfect piece. Record lighting and viewing distances, but also inspect close work for finish or edge defects. Keep visual acceptance separate from dimensional and technical approval. A beautiful panel can still be unsuitable if it does not engage the attachment or meet project tolerances.
Factor 4: prove the complete wall and interfaces
Allocate structure, rain, drainage, air, heat, vapour, fire and movement functions across the complete build-up. The current WBDG enclosure framework emphasizes continuity and integration. Trace those functions through windows, corners, roofs, bases, penetrations and material changes.
Engineering should match panel geometry, support spacing, clips, rails, brackets, anchors, substrate and project actions. Confirm adjustment, movement, corrosion compatibility, fragment risk where relevant and replacement. Product tests do not replace system calculations or assembly evidence. Name the responsible designer and reviewer for every interface.
Factor 5: verify evidence and production capability
Current reports
Confirm product identity, method, specimen, result, date, laboratory and acceptance criterion.
Factory identity
Name the plant, line, body, finish route, tooling, outsourced work and order-specific capacity.
Quality controls
Agree tolerances, inspection frequency, gauges, control samples, lot traceability and nonconformance.
Change control
Define which product, process, geometry or support changes trigger renewed review or testing.
The current ISO 10545-2 provides dimensional and surface-quality methods for ceramic tiles. Confirm scope before applying it to the panel, and add project-specific checks for profile, bow, twist, support datum and fit. A certificate or standard name alone does not establish compliance.
Factor 6: compare environmental and commercial scope
Request current environmental documents for the proposed product and factory where the project requires them. Define declared unit, life-cycle modules, geography, validity, verifier and scenarios. Natural-clay language does not prove low emissions, unlimited recycling, low energy or environmental superiority. Building energy performance belongs to the complete design.
Compare landed scope: panels, supports, engineering, samples, tests, representative bay, packing, freight, storage, installation, access, breakage, overage, spares, warranty and replacement. Record currency, taxes, quantity, Incoterms where relevant, exclusions and quotation validity. “Economical” means little without a common scope and analysis date.
Factor 7: close approvals, installation and handover
Build a register of drawings, calculations, test reports, samples, interface details, quality plans, production inspections and method statements. Assign author, reviewer, due date, revision and status. Use hold points for tooling, first fired units, attachment trials, representative bay, pilot production and shipment. Do not release quantity before the risk each gate addresses is closed.
Plan site survey, tolerances, setting-out, storage, handling, installer training, inspections, damaged-unit disposition and as-built records. Handover should include maintenance methods, cleaning trials, safe access, spares and replacement steps. “Maintenance-free” is not a useful requirement; a defined inspection and care plan is.
The archived article dated 27 January 2014 described LOPO and terracotta panels using absolute claims about quality, maintenance, cost, environmental benefit, combustibility, water and salt-water resistance, colour stability, factory capacity, global clients and satisfaction. It also stated a standard colour count. These are historical marketing statements, not current verified facts. Review current terracotta rainscreen information and the project gallery, then request evidence for the proposed order.