Cole and Son Wallpaper Calculator

Cole & Son Wallpaper Calculator

Plan your project perfectly with our bespoke calculator for Cole & Son wallpaper. Avoid costly errors and material shortages by getting an accurate estimate of the number of rolls you'll need for your space.

Standard (0.52m / 52cm) Wide (0.685m / 68.5cm) Wide (0.70m / 70cm)
Your results will be displayed here.
function calculateWallpaper() { var wallWidth = parseFloat(document.getElementById('wallWidth').value); var wallHeight = parseFloat(document.getElementById('wallHeight').value); var rollWidth = parseFloat(document.getElementById('rollWidth').value); var rollLength = parseFloat(document.getElementById('rollLength').value); var patternRepeat = parseFloat(document.getElementById('patternRepeat').value); var rollCost = parseFloat(document.getElementById('rollCost').value); var resultDiv = document.getElementById('result'); if (isNaN(wallWidth) || wallWidth <= 0 || isNaN(wallHeight) || wallHeight <= 0) { resultDiv.innerHTML = 'Please enter valid wall dimensions (width and height).'; return; } if (isNaN(patternRepeat) || patternRepeat 0) { // For patterned paper, calculate the actual length needed for each drop to match the pattern var cutLengthPerDrop = Math.ceil(wallHeight / patternRepeat) * patternRepeat; if (cutLengthPerDrop > rollLength) { resultDiv.innerHTML = 'Error: A single drop (' + cutLengthPerDrop.toFixed(2) + 'm) is longer than the roll length (' + rollLength + 'm). Please check your measurements.'; return; } dropsPerRoll = Math.floor(rollLength / cutLengthPerDrop); } else { // For plain paper, add a standard 10cm for trimming var cutLengthPerDropPlain = wallHeight + 0.10; if (cutLengthPerDropPlain > rollLength) { resultDiv.innerHTML = 'Error: Wall height plus trimming allowance is longer than the roll length.'; return; } dropsPerRoll = Math.floor(rollLength / cutLengthPerDropPlain); } if (dropsPerRoll <= 0) { resultDiv.innerHTML = 'Cannot get any full drops from a single roll with the specified dimensions. Please check your inputs.'; return; } // 3. Calculate the total number of rolls required var totalRolls = Math.ceil(numDropsNeeded / dropsPerRoll); // 4. Format the output string var resultString = 'You will need approximately: ' + totalRolls + ' roll(s)'; // 5. Calculate total cost if provided if (!isNaN(rollCost) && rollCost > 0) { var totalCost = totalRolls * rollCost; resultString += 'Estimated Total Cost: £' + totalCost.toFixed(2) + ''; } resultString += 'This calculation includes allowance for pattern matching. We strongly recommend purchasing at least one extra roll to account for errors, complex areas (windows, doors), and future repairs. Always ensure all rolls have the same batch number.'; resultDiv.innerHTML = resultString; }

How to Measure Your Room for Cole & Son Wallpaper

Accurate measurements are the foundation of a successful wallpapering project. Follow these simple steps to ensure you purchase the right amount of your chosen Cole & Son design.

  1. Measure Total Width: Using a tape measure, find the width of each wall you intend to cover. Add these measurements together to get your total wall width. For example, if you have two walls that are 4m wide and one that is 3.5m wide, your total width is 4 + 4 + 3.5 = 11.5m.
  2. Measure Wall Height: Measure the height of your room from the top of the skirting board to the ceiling. If your ceiling height is uneven, use the tallest measurement to be safe.
  3. Ignore Small Openings: For the purpose of calculation, it's best practice not to subtract areas for small windows or doors. The wallpaper that would cover these areas is often used for the sections above and below them and acts as a contingency for wastage.

Understanding Pattern Repeat

The 'pattern repeat' is one of the most crucial factors when calculating for patterned wallpaper. It refers to the vertical distance between the top of one motif on the pattern to the top of the next identical motif.

  • Where to find it: The pattern repeat measurement (e.g., 64cm, 72cm) is always listed on the wallpaper roll's label and on the product page online.
  • Why it matters: To create a seamless look, each new strip of wallpaper must be aligned with the previous one, which often results in cutting away part of the roll. Our calculator automatically includes this necessary wastage in its calculation. For plain or textured wallpapers with no pattern, you can enter '0' in this field.

Example Calculation

Let's imagine you are decorating a feature wall using the iconic Cole & Son 'Woods' wallpaper.

  • Wall Dimensions: 4.5m wide and 2.6m high.
  • Wallpaper Details: 'Woods' has a standard roll width of 0.52m, a roll length of 10m, and a pattern repeat of 0.72m.

Here's how the calculation works:

  1. Drops Needed: The wall is 4.5m wide and the paper is 0.52m wide. 4.5 ÷ 0.52 = 8.65. You'll need 9 full drops (vertical strips).
  2. Length per Drop: To match the 0.72m pattern on a 2.6m high wall, you need to find the next multiple of 0.72m that is greater than 2.6m. (4 x 0.72m = 2.88m). So, each drop you cut will need to be 2.88m long.
  3. Drops per Roll: A standard roll is 10m long. 10 ÷ 2.88 = 3.47. You can get 3 full drops from each roll.
  4. Total Rolls: You need 9 drops in total, and you get 3 from each roll. 9 ÷ 3 = 3 rolls.

In this scenario, you would need to purchase 3 rolls. It is always highly recommended to purchase one extra roll for contingency.

Final Pro Tips

Always Buy an Extra Roll: It's the golden rule of wallpapering. Having an extra roll from the same batch is a lifesaver for mistakes or future repairs. It's often difficult to find a perfect batch match later on.

Check Batch Numbers: When your wallpaper arrives, ensure every roll has the same batch number printed on the label. Slight colour variations can occur between different printing batches, which can be noticeable on the wall.

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