Work out how many full-height strips, or drops, you can cut from a roll. Add each wall separately and use the maximum height measured on that wall. Enter the roll dimensions and match type from the label.
How to measure
- Free match · A A ACut to wall height plus trimming allowance. The design can start anywhere.
- Straight match · A A AStart successive drops at the same point in the motif. Allow for the repeat between cuts.
- Half-drop · A B AAlternate the starting motif by half a repeat. This estimate groups A and B drops separately.
- Full rollsA part-width still uses a full-height drop. Round up and order the same batch.
Enter your measurements
What the estimate allows for
It uses the tallest entered wall for all drops and keeps door and window widths in the count, so you can plan full strips and check where the seams fall. With patterned paper it reserves up to one full repeat at the start of each roll for alignment. For half-drop it plans separate rolls for the alternating A and B drops. That is a conservative estimate. A fitter may get more from a roll by alternating cuts or reusing offcuts. Confirm unusual offsets, mural panels and large motifs with your supplier. Graham & Brown guide to pattern matches
Worked example
A 4 m wall needs eight drops from a 53 cm wide roll. At 2.4 m high plus 10 cm total trim, a 10.05 m plain roll gives four drops, so buy two rolls before spares. With a 64 cm straight repeat the same roll gives three usable drops under this model, so buy three rolls.
Further Reading
