Estimating sheets and trims for a wall

WPC Solid Splicing Board
Accanto Decor
Product guides

Most of our wall panels are 1100 × 2800 mm sheets, which is 3.08 m² each, and every aluminium profile is 3 m long. With those two numbers you can estimate most walls in a few minutes.

Panels are priced per square metre, so the simplest approach is to work out how many whole sheets the wall needs and multiply by 3.08 m².

Step 1: measure the wall

Measure the width and the height of the wall in millimetres. If the wall is up to 2.8 m high, one sheet covers the full height. Note any doors, windows and sockets, and every edge where the panelling will stop.

Step 2: count the sheets

Divide the width of the wall by 1100 mm and round up. A wall 4000 mm wide needs 4000 ÷ 1100 = 3.64, so 4 sheets across. If the wall is 2600 mm high, each sheet is cut down by 200 mm.

Check the result by area: 4.0 m × 2.6 m = 10.4 m², and 10.4 ÷ 3.08 = 3.4 sheets, which again rounds up to 4. Four sheets are 12.32 m², and that is the quantity to order.

Panels in 1220 × 2800 mm sheets (3.416 m²: the SPC panel and the 18 mm WPC board) and the 1220 × 2440 mm fireproof panel (2.977 m²) are worked out in the same way with their own sizes.

Step 3: allow for openings and cuts

Doors and windows rarely reduce the number of sheets, because the offcuts around them are often too narrow to reuse. Count full sheets across the wall first, then deduct a sheet only where an opening takes up a sheet's full width. If the wall is irregular, or you are following a seam pattern, add a spare sheet.

Step 4: count the profiles

Work out the length of each kind of edge, divide by 3 m and round up. Vertical runs up to 3 m high take one length each, so count them one by one rather than by total length. For a wall 4.0 m wide and 2.6 m high, panelled from corner to corner with 4 sheets:

ProfileWhere it goesLength needed3 m lengths
H-shape line3 joints between 4 sheets, 2.6 m each7.8 m3
Edge trimTop edge of the panelling4.0 m2
Skirting lineBase of the wall4.0 m2
Internal corner2 corners with the side walls, 2.6 m each5.2 m2

Choose every profile from the range that matches your panel thickness: the 5 mm range for 5 mm panels, the 8–9 mm range for 8 mm and 9 mm panels.

Step 5: fixings and tools

Our panels are fixed with structural adhesive and hidden fitting plates. Fitting plates come in packs of 100 and adhesive is sold per piece; how much you need depends on the panel and the wall, so ask us and we will tell you what to add to your order. The 13-item tool set covers cutting and fitting.

Worked example: a 4.0 × 2.6 m wall

  • Wall area10.4 m²
  • Sheets4 × 1100 × 2800 mm (12.32 m²)
  • H-shape lines3 lengths
  • Edge trims2 lengths
  • Skirting lines2 lengths
  • Internal corners2 lengths

*A worked example, not a quotation. Send us your measurements and we will check your quantities.

Prefer us to do the sums? Our measuring and estimating service works out the quantities from your measurements or drawings.

More from the Journal