“High quality” is not a measurable terracotta cladding requirement. A useful submittal shows that the proposed panel, finish, support system and production controls meet the project’s stated criteria. The review should connect every claim to a drawing, sample, test report, calculation, certificate or inspection record.
Define quality for the actual facade
Start with the architectural intent and exposure. Identify panel module, orientation, surface, colour range, joint pattern, corners, openings and visible support limits. Add structural actions, climate, building height, fire strategy, cavity design, maintenance access and replacement expectations. Requirements should name the applicable standard, test method, acceptance value and responsible reviewer.
A panel suitable for one low-rise elevation is not automatically suitable for a tall building, a coastal site or a freeze–thaw climate. Likewise, an attractive loose sample says little about dimensional tolerance or fixing engagement. Quality is the demonstrated fit between a documented product and its intended assembly.
Request identifiable product data
The technical submittal should identify manufacturer, factory, product family, profile code, clay body, forming method, finish, nominal size, actual section, wall thickness, unit weight and tolerances. Include drawings of grooves, webs, ends and fixing zones. If a glaze, engobe or surface treatment is proposed, describe it by current product reference rather than a marketing colour name alone.
Check that schedules, drawings, samples, quotations and packing lists use consistent codes. Distinguish terracotta rainscreen panels from baguettes and louvers; similar clay and finish do not make their sections, support requirements or test evidence interchangeable.
Control appearance with samples and tolerances
Approve more than one small sample. Fired clay can show planned shade and texture variation, so the design team should review a representative range, not select a single ideal piece. A sample panel or visual mock-up can establish coursing, joint width, corner quality, support visibility and how colours are blended across an elevation.
Record the accepted sample set with product code, batch information, finish, date and viewing conditions. Define how future deliveries will be compared and who can approve deviations. Dimensional tolerances should cover length, height, thickness, bow, twist, squareness and relevant profile geometry. State how measurements are made; vague “reasonable variation” language is difficult to inspect.
Match test evidence to each requirement
| Question | Useful evidence | Review point |
|---|---|---|
| Can the unit resist specified actions? | Relevant product test results plus project calculations for spans, clips, rails and anchors | Specimen, orientation, supports and safety factors match the proposed use |
| Is the body suitable for exposure? | Water absorption and freeze–thaw or other durability results where the project requires them | Test method, cycle or condition, acceptance criterion and product identity are clear |
| Does it meet fire requirements? | Current classification or wall-assembly evidence required by the jurisdiction | Scope covers the relevant product or complete construction—not an unrelated material |
| Is the finish controlled? | Approved range samples, finish description and relevant test data | Expected variation, edges, cut faces and replacement matching are addressed |
Check report issuer, date, standard edition, product code, specimen dimensions and result. A test on one body or thickness should not be extended to another without a justified product-family assessment. Ask for clarification where the report name and submitted profile do not align.
Review the complete cladding system
Panels do not perform alone. The package should show brackets, anchors, primary and secondary rails, clips, pads, gaskets, fasteners, movement points and corrosion protection. Project calculations should use the approved substrate and design actions. Drawings must coordinate cavity depth, insulation, membranes, fire barriers, flashings and drainage with adjacent trades.
Request full-size details at the base, top, corner, opening, parapet and material transition. Demonstrate panel replacement without damaging neighbouring units. A performance mock-up may be needed for project-defined structural or weather criteria; its construction and deviations should be recorded before production release.
Verify manufacturing and delivery controls
A factory quality plan is more informative than statements about sophisticated machinery. It should explain incoming-material controls, process checks, dimensional sampling, firing records, finish inspection, traceability, nonconformance handling and final release. For a project colour range, define reference samples and how units will be selected or blended.
Packaging is part of delivered quality. Confirm pieces per crate, protection at edges and ends, crate weight, labels, lifting points and storage limits. Inspect representative crates on arrival, document transit damage and keep questionable units separate. Agree spare quantities and identification so future replacement does not depend on guessing a colour code.
Use a clear approval checklist
Before tender
Set performance criteria, module, finish intent, system responsibility, required reports, mock-up scope and submission dates.
Before production
Approve coordinated drawings, calculations, product data, representative samples, test evidence, QA plan and interface details.
Before shipment
Confirm quantities, codes, batch release, packing, labels, delivery sequence, inspection documents and spare material.
Before handover
Collect as-built information, cleaning guidance, maintenance access, warranties and the panel replacement procedure.
Learn more about LOPO and compare completed applications in the project gallery. Company background and project photographs provide context; project acceptance should remain tied to the approved submittal.