Inputs
Enter your spaces and pad options
Add multiple garden rooms, sheds, or enclosed patios.
Example data table
| Scenario | Rooms (L×W) | Waste | Roll | Area with waste (ft²) | Rolls |
|---|---|---|---|---|---|
| Garden shed floor | 12×10 | 10% | 6×60 ft | 132.00 | 1 |
| Sunroom + entry | 14×12, 6×5 | 12% | 6×60 ft | 222.88 | 1 |
| Greenhouse lounge | 18×14 | 15% | 6×60 ft | 289.80 | 1 |
Your roll size may differ; update roll width and length.
Formula used
- Room Area (ft²) = Length × Width (converted to feet).
- Total Area = sum of all room areas.
- Area With Waste = Total Area × (1 + Waste% / 100).
- Roll Area (ft²) = Roll Width × Roll Length.
- Rolls Needed = ceil(Area With Waste / Roll Area).
- Estimated Cost = Area With Waste × Price/ft² or Rolls Needed × Price/roll.
Strip and linear estimates approximate seam count using roll width.
How to use this calculator
- Enter each room as a rectangle, using consistent units.
- Set waste allowance for trimming around posts and edges.
- Enter roll width and length from your pad packaging.
- Select thickness based on comfort and moisture exposure.
- Choose pricing mode, then enter your supplier price.
- Click Calculate. Download CSV or PDF for your records.
For L-shaped areas, split into two rectangles and add both.