Vapor Barrier Rolls
Calculator
Effective roll area (m²)
108
Results
- Effective roll area (m²)
- 108
- Rolls needed (exact)
- 0.925925
- Rolls to buy
- 1
Construction results
| Effective roll area (m²) | 108 |
| Rolls needed (exact) | 0.925925 |
| Rolls to buy | 1 |
formula-map diagram
- Effective roll area (m²)
- 108
- Rolls needed (exact)
- 0.925925
- Rolls to buy
- 1
Formula breakdown
Formula
effective roll area = L × W × (1 - overlap ÷ 100); rolls = area ÷ effective roll area= 108
Note
Simplified model: results are quantity estimates only. They ignore openings, overlaps, cuts, site conditions and local building codes. Structural figures are not a substitute for a design by a qualified engineer.