Design valances for patios and plant rooms. Match fabric width, gathers, and repeats to plan. Calculate yardage fast, then cut with fewer surprises today.
Use this for patio, sunroom, or garden-room valances.
These examples show typical scenarios for garden-room window valances.
| Scenario | Finished width | Drop | Fullness | Roll width | Repeat | Waste |
|---|---|---|---|---|---|---|
| Patio door valance | 72 in | 16 in | 2.0 | 54 in | 0 in | 10% |
| Sunroom wide window | 96 in | 14 in | 1.8 | 54 in | 12 in | 12% |
| Small garden nook | 48 in | 12 in | 1.5 | 45 in | 6 in | 8% |
Pattern repeats are rounded up to the next full repeat to help matching.
Finished width and fullness drive fabric use. A 72-inch opening at 2.0 fullness needs 144 inches of covered width before hems. With a 54-inch roll and 1-inch side hems, usable width becomes 52 inches, so three widths are typical. Small changes in fullness can add a full extra width, especially on wide garden-room windows.
Cut drop equals finished drop plus header and hems. For outdoor-facing spaces, a deeper bottom hem helps weight the valance and reduces flutter. If you use a rod pocket, the header allowance should include pocket depth and any top return you plan. Record allowances consistently so future replacements match the original look.
Repeats are rounded up to the next full repeat so motifs line up across widths. When repeats are large, the rounding step can add noticeable length per width. Directional prints usually favor standard cutting. Railroad cutting can reduce waste for non-directional fabrics, but it may increase seams if the drop exceeds roll width.
A practical waste allowance accounts for trimming, squaring ends, and test folds. Use 8–12% for straightforward solids. Use 12–18% for large repeats, thick hems, or when working in humid garden spaces where fabric can shift during pressing. Buying a little extra is cheaper than a shortfall on installation day.
Lining can add body, reduce light glare, and improve durability near plants and moisture. Many projects use lining fullness near 1.0 for a smooth back. If you want a softer drape, increase lining fullness slightly. Separate lining yardage helps you quote both materials accurately and control overall weight. For humid garden areas, choose lining and face fabrics with similar shrink and care labels. Pre-press or steam-test a swatch, then re-measure drop. When using blackout lining, reduce fullness to prevent stiffness at the rod pocket. Keep notes from each run so future valances can be duplicated for windows. This improves estimating, minimizes waste, and supports consistent style across seasons too.
Use 1.5 for a neat, tailored look. Use 1.8–2.2 for gathered styles. Go higher only if your hardware and fabric weight can support the extra bulk.
Railroad works best with non-directional fabrics when the roll width can cover the drop. It can reduce repeat waste, but it may add seams if several strips are needed.
If there is no visible motif alignment, enter 0. If the texture has obvious horizontal or vertical steps, use the measured repeat to avoid mismatched panels.
Side turns consume fabric on both edges. Subtracting them gives a more realistic cutting width, preventing underestimation of widths needed for your chosen fullness.
Start with 8–12% waste for standard projects. Increase to 12–18% for large repeats, heavy hems, or first-time cutting. Extra also helps for future repairs.
The face yardage is calculated independently. Lining is added as a separate total so you can source materials correctly. Lining fullness can be different from the face fabric.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.