Insulation Materials Database
R-value ratings, coverage areas, thickness, and cost data for fiberglass batts, rolls, and spray foam insulation.
R-13 Fiberglass Batt Insulation (2×4 Wall)
Standard fiberglass batt insulation for exterior 2×4 framed walls. The most common insulation type in residential construction.
| Weight/Density: | 0.5 lbs per sq ft |
| Dimensions: | 15" or 23" wide × 93" long batts (fits 2×4 stud wall) |
| Est. Price: | $0.50 - $0.80 per sq ft |
R-30 Fiberglass Attic Insulation Roll
High R-value fiberglass roll insulation designed for attic floors and cathedral ceilings where deep thermal performance is required.
| Weight/Density: | 1.2 lbs per sq ft |
| Dimensions: | 15" or 23" wide rolls, unfaced or kraft-faced |
| Est. Price: | $0.80 - $1.50 per sq ft |