Weed Barrier / Landscape Fabric Calculator
Calculate how many rolls of landscape fabric or weed barrier you need for your garden beds, paths, or landscaping.
Weed Barrier Needed
Weed barrier rolls are calculated from the total bed area plus overlap for seams.
Total Area = Length x Width (or custom area)
Area with Overlap = Total Area x 1.15 (for 6-inch seam overlaps)
Rolls = Area with Overlap / Roll Coverage
Common landscape fabric roll sizes:
- 3 ft x 50 ft = 150 sq ft
- 3 ft x 100 ft = 300 sq ft
- 4 ft x 50 ft = 200 sq ft
- 4 ft x 100 ft = 400 sq ft
- 6 ft x 100 ft = 600 sq ft
Types of weed barrier:
- Woven fabric: Best for permanent landscapes, allows water through
- Non-woven fabric: Better weed blocking, good under gravel/stone
- Plastic sheeting: Blocks everything including water (use with caution)
Tips:
- Overlap seams by 6 inches minimum
- Secure with landscape staples every 2-3 feet
- Cover with 2-3 inches of mulch for best results