Insulation Calculator

Calculate how much insulation you need and estimate cost based on area and insulation type.

Area to Insulate (sq ft)

Insulation Type

Price per roll (optional, uses typical price if blank)

Roll (40 sq ft)s Needed13rolls for 500 sq ft at R-13

R-ValueR-13

Est. Material Cost$260

Recommended R-Values by Location

Attic (warm climate, zone 1-2)R-30 to R-49

Attic (moderate, zone 3-4)R-38 to R-60

Attic (cold, zone 5-8)R-49 to R-60

Walls (all zones)R-13 to R-21

Floor over unheated spaceR-13 to R-25

Crawl space wallsR-5 to R-10