Keep horizontal and vertical straight repeats separate.
Why can a vertical repeat allowance alone miss a fabric width constraint?
Use the matching calculator
Use this decision sequence
- Read both repeat directions from the selected straight-repeat fabric.
- Use the complete cut panel dimensions including separately chosen seam allowances.
- Round panel width and drop to their own repeat grids.
- Check the rounded panel width against usable fabric width before counting rows.
Keep the quantities distinct
| Quantity or assumption | How to use it |
|---|---|
| Horizontal repeat | Controls aligned space reserved across the roll. |
| Vertical repeat | Controls aligned drop reserved along the roll. |
| Half-drop design | Needs a different matching model. |
Worked comparison
A 0.55 m by 0.9 m panel with 0.3 m horizontal and 0.4 m vertical straight repeats reserves 0.6 m by 1.2 m. Two panels fit across 1.4 m usable width. Five panels need three rows, so 3.6 m plus 0.1 m initial alignment loss requires 4 m when the supplier sells 0.5 m increments.
Check before using the estimate
This model uses a shared straight-repeat motif origin without rotation. Obtain the usable width and repeat from the actual product, rather than inferring them from a picture. The example values are illustrative arithmetic inputs. Replace them with your measured plan, selected product information and actual quote where relevant.
All dimensions, product properties, prices and specifications in this example are illustrative arithmetic inputs. Use the values from your measured plan, selected product data sheet and supplier quote. This guide does not choose construction specifications or certify safety.
Sources and product references
References support the stated product-data distinction. All worked examples are independent illustrative arithmetic.
Calculation and scope checked 2026-10-04. Methods and scope.