A strip-line terracotta rainscreen uses repeated shallow ribs or grooves to give a facade direction, shadow and a finer visual scale. The profile should be specified as geometry, then coordinated with panel orientation, open joints, water paths, soiling, support tolerances and cleaning access.
Define the linear profile precisely
“Strip-line” can describe many surfaces. Draw rib or groove width, depth, pitch, edge offset, corner radius and direction. Identify whether the pattern is formed in extrusion, applied later or combined with another finish. Confirm the visible face, end condition and any asymmetry in the section.
Ask for a full current panel drawing rather than using the nominal face dimensions alone. Internal webs, fixing grooves, wall thickness and cut limits affect support and edge treatment. If the pattern must align across adjacent panels, specify how profile and size tolerances are measured and accumulated.
Choose orientation through light and scale
Horizontal lines can reinforce floor plates and make a broad elevation feel longer. Vertical strips can emphasise height and connect panels across storeys. Diagonal or changing orientations create stronger graphic effects but complicate corners, cutting and panel identification. Select direction from the architectural concept, not a small sample viewed flat on a table.
Study the facade in morning, midday, overcast and planned night lighting. Grazing light can deepen shadows but also reveal bow, stepped joints and inconsistent rotation. Review the pattern from normal street distance and close approach; a fine strip may merge into tone from afar while remaining tactile at an entrance.
Coordinate strips with the joint grid
Panel joints create another set of lines. Decide whether the strip pitch relates mathematically to panel height or width, and whether grooves stop symmetrically at edges. Show external corners, internal returns, reveals, soffits, parapets and cut panels. A regular profile that reaches one edge with a half-strip and another with an awkward sliver can look unintentional.
Open-joint width and backing colour change how the pattern reads. A dark cavity can make joints stronger than the strips; a closely matched rail or membrane may soften them. Only use visible backing materials approved for exposure and fire strategy. Do not alter joint width merely to correct a profile mismatch on site.
Design water paths and soiling behaviour
Horizontal grooves
May hold dust or slow runoff at shallow ledges. Review drip paths, algae risk in shaded areas and safe cleaning reach.
Vertical grooves
Can channel runoff and produce darker tracks below copings, joints or metalwork if water is not distributed and drained deliberately.
Open joints
Allow some water behind the face by design. Coordinate cavity drainage, flashings, membranes and clear discharge paths.
Transitions
Sills, parapets, trims and projecting elements can concentrate dirty runoff across the strips unless drips and clearances are resolved.
The profile is not self-cleaning and the panel face is not the wall’s sole waterproofing layer. Use the complete rainscreen design to manage water. Trial cleaning on a representative fired sample; aggressive pressure or unapproved chemicals can change the surface or damage adjacent joints.
Engineer the panel and support system
Confirm actual unit weight, section properties, orientation and support zones for the proposed profile. The facade engineer should verify wind, self-weight, seismic demand where applicable, panel span, clip engagement, rail and bracket capacity, anchors, substrate and movement. A 10-millimetre archive label does not establish current structural suitability.
Directional panels need clear factory and crate marking so installers do not rotate them. Check rails and clips for adjustment without obstructing drainage. At cuts, corners and top closures, preserve required edge strength and fixing engagement. Use factory-prepared pieces where the approved method requires them.
Approve appearance and production range
Progress from a profile sample to a full panel, then a multi-panel visual mock-up with real joints and supports. Approve strip geometry, colour and texture range, bow, edge condition and alignment. If more than one batch is expected, review how colour and dimensional control will be maintained or blended.
Retain labelled control samples and record viewing conditions. The mock-up should include at least one corner or reveal where the linear pattern terminates. Note which natural variations are accepted and which misalignments or surface defects are not.
Carry the profile into procurement and QA
Issue elevations with orientation arrows, panel codes, strip geometry, joint widths, cut locations, special pieces and quantities. Add design criteria, required test reports, mock-up stages, packaging, spares and programme. Confirm current availability, tooling or minimum quantity and replacement lead time before tender commitment.
During installation, inspect product code, orientation, strip continuity, joints, plane and damage at defined intervals. Photograph the first accepted bay in each principal orientation and use it as a site reference before access moves.
Review terracotta rainscreen panels, the textured-finish approval guide and the detailed installation workflow.