A red split-face clay brick is read through colour, relief and shadow. Deep texture also affects mortar placement, residue removal, runoff and inspection, so the facade should be approved with current physical samples and a full-size system mock-up rather than a flat image.
Define the current split-face profile
Request a code and drawing showing length, height, thickness, tolerances, edges, rear profile, unit mass and available corners. The face description should address relief depth, high and low zones, end conditions and permitted variation. Verify whether the archived 60 × 190 × 14 mm size remains current.
Clarify whether “split face” is a controlled manufactured texture, a family of variable faces or another process description. Inspect multiple current units from representative production. Tie the selected surface, colour and installation information to one revision-controlled product identity.
Define functional tolerances for length, height, thickness, squareness, warpage and rear geometry separately from intentional face variation. Agree how projecting high points are measured and protected. The deepest or most irregular face should still work with the designed joint and installed plane.
Evaluate relief through light and distance
Review the wall in front, oblique and close views and under direct, overcast and intended artificial light. Raking light can emphasize relief, lippage and joint variation, while flatter light may make colour differences more apparent. These effects should be observed, not promised from a catalogue image.
Decide whether units have a preferred orientation and how repeated or distinctive faces will be distributed. Set the desired balance between visible variation and coherent coursing. Retain labelled samples showing acceptable relief and red colour boundaries.
Arrange the sample units as a small field rather than a single row. Mark rotations and repeat positions, then view them from the expected approach. This can expose an unintended directional pattern or isolated deep shadow before the full mock-up is built.
Coordinate mortar and joint expression
Joint colour
Compare lighter, matching and darker choices; contrast changes both the apparent red tone and strength of the bond pattern.
Joint depth
Review the intended profile relative to the face’s high and low points, installation method and water strategy.
Placement
Set a workmanship approach that limits mortar smears on projecting texture and keeps joint edges visually consistent.
Cleanup
Trial tools, timing and materials on the exact clay and mortar; deep relief makes residue more difficult to see and remove.
Record the accepted mortar, joint width, profile and cleanup sequence in the mock-up. Avoid assuming a method that works on a smooth brick will produce the same result on a rugged face. Protect completed work from later trades and uncontrolled washing.
Hold a preinstallation review with the installer and relevant material suppliers. Confirm sample references, mixing of faces and batches, mortar placement, tooling sequence, protection and the point at which cleanup begins. Identify who can approve departures from the mock-up.
Detail runoff, ledges and exposed edges
Map water from copings, sills, roofs, flashings, joints and adjacent materials. Projecting texture can create small ledges and varied wetting, but it does not replace the wall’s drainage strategy. Coordinate drips, cavities or drainage paths, outlets and base terminations in the complete design.
Inspect splash zones, sheltered areas and concentrated discharge in the mock-up where relevant. Draw corners, reveals, soffits and cut edges at full size. Confirm special pieces or an approved return strategy so an attractive field face does not end in an unresolved edge.
Match evidence to product and wall
Create a matrix for dimensions, absorption, strength, freeze–thaw, chemical exposure, reaction to fire and other relevant product requirements, plus support or adhesion, wind, movement and water management for the assembly. Check the exact code, thickness, face, test method, date and scope.
Archive terms such as “firebrick,” “heat insulation” and “acid-resistant” do not establish complete-wall outcomes. A quality-management certificate does not prove product performance. Differences in relief or thickness between the tested and ordered unit should be identified and assessed by the responsible project party.
Approve a representative wall mock-up
Build enough area to show the red range, relief distribution, bond, mortar and joints, a corner, an opening, flashing and sealant interface. Use the intended substrate and installation route. Review the panel under representative light and after the approved cleanup period.
Record who approved the mock-up, its location, samples and any qualifications. Use it to set expectations for relief, shade mixing, joint work, cuts, corners and cleanliness. A visual approval does not replace technical evidence, calculations or required installation-system tests.
Inspect, clean and maintain the facade
Set hold points for substrate acceptance, product and batch checks, support or coverage, setting-out, joints, flashings and cleaning. Inspect projecting faces and recesses before access is removed. Record installed batch locations and isolate out-of-range or damaged pieces.
Review the current terracotta brick range and relevant project references for initial visual context. At handover, retain as-built details, inspection access, trialled cleaning guidance, repair principles and labelled spares; avoid blanket claims that a deep texture needs no maintenance.
Maintenance guidance should distinguish dust, mortar residue, runoff marks and other deposits rather than prescribing one universal cleaner. Test any new method on an inconspicuous representative area, observe the recesses as well as high points, and record the approved result.