Insulation Calculator
Estimate insulation materials needed for walls and attics
Enter Area Details
How to Use This Calculator
- Measure the length of the area to insulate
- Measure the width of the area
- Select your insulation type
- Choose the appropriate R-value
- Click Calculate to get materials needed
Formula
Insulation calculation:
Area = Length × Width
Materials = Area / Coverage per Unit
Tips for Accurate Measurements
- Wear protective gear (mask, gloves, long sleeves)
- Fill all gaps but don't compress insulation
- Seal air leaks before insulating
- Ensure proper ventilation in attics
- Check for moisture issues before insulating
Frequently Asked Questions
What R-value do I need?
Walls: R-13 to R-21. Attics: R-30 to R-60. Floors: R-13 to R-30. Higher R-values provide better insulation. Check local building codes.
What type of insulation is best?
Batt insulation is DIY-friendly and cost-effective. Blown insulation fills gaps better. Spray foam provides best R-value and air sealing but costs more.
Can I install insulation myself?
Yes, batt insulation is DIY-friendly. Blown insulation requires rental equipment. Spray foam should be professionally installed.
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Last updated: January 2025