Calculate panels, battens, and costs for wall panelling
Wall panelling has become one of the most popular interior design trends in UK homes, adding texture, character, and a sense of period charm to any room. Whether you want classic Victorian-style dado panelling, modern shiplap in a bedroom, or tongue-and-groove boards in a bathroom, knowing exactly how many panels and fixings you need prevents mid-project shortages and wasted materials. The three most common panel types in the UK are MDF strips (the most affordable and easiest to paint), shiplap boards (with their distinctive overlapping profile), and tongue-and-groove boards (which slot together for a seamless finish). Each type comes in different widths, typically from 75mm to 200mm, and is available from builders merchants and DIY stores nationwide. This calculator estimates the number of panel strips or boards needed for your wall, plus the battens for mounting and adhesive tubes for fixing. A 10% waste factor is included for cutting around sockets, switches, and corners. Cost estimates are provided for each panel type so you can budget the project before buying materials.
To calculate your wall panelling requirements: 1. Enter the total wall length in metres. If panelling multiple walls, add up all the wall lengths. For a full room, measure the perimeter and subtract door and window widths. 2. Enter the panel height in metres. The most popular heights are 0.9m (dado rail height) and 1.2m (slightly above halfway). For full-height panelling, enter the floor-to-ceiling height, typically 2.4m. 3. Enter the panel width in millimetres. Common widths are 75mm, 100mm, 120mm, and 150mm. Narrower panels give a more traditional look, while wider boards create a more contemporary feel. 4. Select the panel type. MDF is cheapest and easiest to work with. Shiplap has a distinctive overlapping profile. Tongue-and-groove provides a smooth, flush finish and is ideal for bathrooms as it resists moisture better. 5. Review the results. The calculator shows panels needed, battens needed (2.4m lengths), adhesive tubes, and a cost range for the panels. Remember to budget separately for paint, a top rail or dado rail, and any decorative mouldings.
The wall panelling calculation covers three components: Panels: Panel width (m) = panel width (mm) / 1000 Panels needed = ceiling(wall length / panel width x 1.10) The 1.10 multiplier adds 10% for waste from cutting around obstacles. Battens: Batten rows = ceiling(panel height / 0.4) Total batten length = wall length x batten rows Battens (2.4m lengths) = ceiling(total batten length / 2.4) Battens are spaced every 400mm vertically to provide adequate support. Adhesive: Adhesive tubes = ceiling(wall length x panel height / 3) Each tube of grab adhesive covers approximately 3 square metres. Cost estimates: MDF: 3-5 pounds per panel Shiplap: 4-7 pounds per panel Tongue-and-groove: 5-9 pounds per panel
Inputs: Wall length: 8 m, Height: 1.2 m, Panel width: 100 mm, Type: MDF
Inputs: Wall length: 4 m, Height: 0.9 m, Panel width: 150 mm, Type: Shiplap
Inputs: Wall length: 6 m, Height: 1.0 m, Panel width: 120 mm, Type: Tongue-and-groove
Before starting a wall panelling project, check the wall for damp using a moisture meter. Panelling over a damp wall will trap moisture and cause mould growth behind the panels. Fix any damp issues before proceeding. For the neatest finish, use a mitre saw to cut panels cleanly and a pin gun (brad nailer) for fixing to battens. Sand and fill any nail holes with wood filler before painting. Two coats of a good-quality eggshell or satinwood paint over a primer coat gives a durable, wipeable finish. Popular paint colours for wall panelling in the UK include Farrow and Ball "Hague Blue," "Railings," and various shades of sage green and warm grey. Always acclimatise timber panels in the room for at least 48 hours before installation to prevent warping or shrinkage after fitting.