Calculate wallpaper rolls from wall size, roll dimensions and the way the pattern repeats.
Your input
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Result
Enter your data or use the example, then run the tool.
Worked example
A 4 × 2.5 m wall, 0.53 × 10.05 m rolls, 0.1 m trim and 0.64 m repeat needs eight 3.2 m drops and three rolls.
Method
Start with wall height plus trimming allowance. For straight matching, increase that length to a whole pattern repeat. Calculate the whole drops needed across the wall and the whole drops available from each roll, then round up to complete rolls.
Limits
Supports no-match and straight-match wallpaper. Half-drop patterns and sharing offcuts between walls are not included. Doors and windows are not subtracted as area because they may not save a full strip.
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