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How much weed barrier fabric your gravel area needs, including seam overlap and staple count.
With these inputs:
| Result | Value |
|---|---|
| Fabric rolls needed | 2 rolls |
| Strips required | 5 × 40 ft |
| Total fabric | 600 sq ft |
| Staples needed | 168 |
| Area to cover | 480 sq ft |
| Roll width | 3 ft |
| Seam overlap | 6 in |
| Effective coverage per strip | 2.5 ft |
| Strips needed | 5 |
| Linear feet of fabric | 200 ft |
| Rolls (100 ft each) | 2 |
| Fabric area purchased | 600 sq ft |
| Waste from overlap | 120 sq ft |
| Landscape staples | 168 at 3 ft spacing |
Use woven fabric under gravel, not the thin spun non-woven type sold for flower beds — woven fabric resists puncture from angular stone and lasts many times longer under load.
Fabric is sold in fixed roll widths, so the number that matters is not your area — it is how many strips you need once seams overlap by six inches. This calculator works in roll widths and returns the staple count too.
For decorative stone, yes — it stops weeds and keeps the gravel from sinking into soil. Under a driveway, use a heavier woven geotextile, which serves a structural separation role as well.
Six inches at every seam. Less than that and weeds find the gap; gravel also works its way between the strips over time.
Woven geotextile, not spun-bonded landscape fabric. Woven material resists puncture from angular stone and handles the load of vehicles or foot traffic without tearing.
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