Bespoke Wallcoverings: How to Measure Your Walls

Accurate measurements will help you get the most useful early indication from the Panel Calculator. The key principle is simple: measure all walls you intend to cover with wallcovering. Where possible, we always recommend that walls are measured by a professional installer. 

What the Panel Calculator Asks For

  • Total wall perimeter (the combined width of all walls to be covered)
  • Wall height
  • Number of walls
  • Number of doors

If you have access to a laser measuring device, this is preferable for speed and accuracy (although a tape measure will also get the job done!)

The calculator works with either metric or imperial measurements, so you may use whichever system you are most comfortable with - just be consistent throughout.

Step 1: Measure Wall Widths

  • Measure each wall horizontally, from end to end.
  • Record each wall separately, then add all relevant widths together to establish the total perimeter. 

Example Calculation:

Wall 1: 3m

Wall 2: 4m

Wall 3: 3.2m

Wall 4: 4.1m

3 + 4 + 3.2 + 4.1 = 14.3m Perimeter

Important notes:

  • Walls with overdoors should be included in the perimeter.
  • Floor-to-ceiling breaks where no wallcovering is required at all do not need to be included.
  • If in doubt, include the wall — the calculator is designed to be indicative.
  • For tailored orders we will require detailed measurements and elevations at formal quoting stage

Step 2: Measure Wall Height

  • Measure vertically from floor to ceiling.
  • Measure multiple points within the room to be sure.
  • If heights vary, use the tallest height.
  • If you are not covering the full height (for example a dado), measure only the intended wall height.

Step 3: Count Windows and Doors

  • A single door = 1 door
  • A double door or wide opening = count as 2 doors
  • Large or wide windows can also be counted twice, where appropriate

This ensures the estimate better reflects the usable wall area. We will deduct half a panel per door / window for tailored estimates.

Allowing for Tolerance

Within the Panel Calculator, you’ll have the option to apply a 5% tolerance to your perimeter measurement.

Walls are rarely perfectly square or consistent, and tolerance will be necessary when working with real-world dimensions. 

If you prefer not to apply a percentage-based tolerance, you can instead allow for tolerance by adjusting your measurements before entering them into the tool. If opting for this approach, we recommend allowing approximately:

  • 100mm / 4" to each wall that makes up the perimeter

This ensures your estimate accounts for site conditions and measurement variation. For further guidance on the Estimator tool, you can refer to our How Our Panel Calculator Works page.

A helpful guide, not a final quote

The Panel Calculator provides an early indication only. Final measurements are always confirmed during the quoting and technical stages.

If you’re unsure at any point, the team at Fromental would be happy to help and advise you on the best next steps.