🏠 Insulation Calculator
Calculate insulation needed for your space
About Insulation Calculator
Calculate insulation needed for your space. Enter your measurements to get an accurate estimate of materials needed for your project.
Understanding R-Value
- R-Value: Measures insulation's resistance to heat flow
- Higher = Better: Higher R-values provide better insulation
- Climate Zones: Colder climates need higher R-values
- Coverage: Standard roll covers 40-50 sq ft
Recommended R-Values by Location
- Attic: R-30 to R-60 depending on climate
- Walls: R-13 to R-21 for most climates
- Floors: R-13 to R-30 over unheated spaces
- Basement: R-10 to R-15 for walls
Frequently Asked Questions
What R-value do I need?
It depends on your climate and location. Northern climates need R-49 to R-60 in attics, while southern climates need R-30 to R-49. Check local building codes for requirements.
Can I layer insulation to increase R-value?
Yes, R-values are additive. You can layer different insulation types. For example, R-19 + R-11 = R-30 total.
How many square feet does a roll of insulation cover?
Standard rolls cover 40-50 square feet depending on width and thickness. Check the product packaging for exact coverage.