Batt insulation calculator
Use package coverage for the specified insulation thickness.
Shopping estimate
Enter your measurements to see an estimate.
How it works
Use package coverage for the specified insulation thickness. Add a cutting allowance and check cavity sizes before purchase.
Worked example
- Net area
- 45 m²
- Coverage per package
- 8 m²
- Waste allowance
- 10 %
Result 7 packages
Related calculators
Insulation & weatherproofingWaterproofing membrane calculatorReduce gross roll coverage by the share consumed by laps and detailing, then round up to full rolls.↗Insulation & weatherproofingLiquid waterproofing calculatorUse the manufacturer’s coverage per coat for the required dry-film thickness and number of coats.↗