Brick Slip Sizes and Thickness: Planning the Finished Wall

The face length runs along a normal horizontal course. Face height runs from the bottom to the top of one slip. Thickness is the distance from its back to its front. These measurements answer different questions: face dimensions help you set out the pattern, while thickness helps establish the finished wall line.

Product records can include the size of the original full brick from which a slip is cut. For example, a 215 × 102.5 × 65mm source-brick entry does not establish that the supplied slip is 102.5mm thick. If a listing leaves the cut depth unclear, ask for the actual slip dimensions before buying or designing a reveal.

As a clearly labelled setting-out example, a 215mm-long × 65mm-high face with 10mm joints repeats on a nominal 225 × 75mm module. That puts 2,400 ÷ 75 = 32 nominal courses into 2.4m. Top and bottom joints, cuts and the chosen start line still need to be resolved on the actual wall.

Do not stretch joints simply to make an opening work without checking the intended appearance and system requirements. A full-size dry layout across the most visible area can reveal narrow cuts near door frames or a course that collides with a shelf. The pattern guide explains how the bond changes those decisions.

Start from a clearly identified reference surface. Add any new backing or levelling layers, the specified adhesive bed and the slip thickness. Where the chosen system includes battens, rails or a cavity, include those too. Existing layers are only included if your reference point is behind them.

Illustration only: a hypothetical 12mm board, 5mm adhesive layer and 20mm slip would project 12 + 5 + 20 = 37mm from the surface behind that board. These are example dimensions, not a recommended assembly or a specification for products sold together. A direct-bond arrangement with the same hypothetical adhesive and slip would add 25mm from its receiving surface.

Pointing fills the spaces between slips; its joint depth is not normally an extra continuous layer added in front of every slip. A textured face may also have local high points. Agree which finished face line governs clearances and junctions.

• Skirtings and trims: decide whether they remain, are replaced or finish against the new facing.
• Windows and doors: check frame exposure, reveal depths and moving parts against the finished surface.
• Sockets and switches: arrange for a qualified electrician to assess the revised wall depth and fittings before the wall is clad.
• Cabinets and shelves: coordinate their supports with the backing construction and finished position.
• Outside corners: confirm return lengths and how adjacent courses meet.

A small trial build-up beside an awkward junction can be more useful than judging the depth from a loose slip. Include both the textured face and the intended joint finish in that assessment.

Thickness alone cannot tell you whether a slip and board are suitable together. Confirm the format, tolerances, fixing method and complete installed weight with the relevant manufacturers. Mechanically retained slips need the exact profile their system accepts; a similarly sized loose slip is not automatically interchangeable.

The stocked Trackwall board listing is titled 1190mm wide × 1125mm high with 68mm grooves. Use the current supplied-product specification and confirm the dimensions in your quotation before planning the layout. Confirm that the groove arrangement suits the selected slips and joints. The wall-preparation guide covers the supporting-surface questions.

Shortlist a finish in the brick slips range, then request its face dimensions, actual cut thickness, dimensional variation and available corner formats. For example, the TBS Sandalwood listing helps identify the blend, but your final dimension schedule must describe the supplied slip rather than just its source brick.

Give that schedule and a wall sketch to the installer. Record the chosen joint width, backing, adhesive bed and expected overall projection. Use the cut-to-order service if a specific source brick is central to the design, while confirming achievable cut dimensions before committing. See the brick slips overview for how these details fit the wider project.