Kostenloser Dämmstoff-Rechner
Berechnen Sie den Dämmstoffbedarf in Quadratfuß und Rollen für Wände, Dachboden oder Keller.
93 in for 8ft walls, 105 in for 9ft walls
Batts Needed
52
Batts Needed vs Total Area to Insulate
Formel
## How to Calculate Insulation ### Formula **Batts Needed = Total Area / Coverage per Batt** Batt width fits between studs: 15 inches for 16" OC studs, 23 inches for 24" OC studs. Batt length is typically 93 inches (8 ft walls) or 105 inches (9 ft walls). Choose R-value based on application: - R-13: Standard 2×4 exterior walls - R-19: 2×6 exterior walls - R-30 to R-38: Attic floors - R-49: Attic floors in very cold climates
Lösungsbeispiel
500 sq ft of wall area with 16-inch OC studs, 93-inch batts, R-13.
- 01Batt width = (16 - 1) / 12 = 1.25 ft
- 02Batt length = 93 / 12 = 7.75 ft
- 03Coverage per batt = 1.25 × 7.75 = 9.69 sq ft
- 04Batts needed = 500 / 9.69 = 51.6 → 52 batts
Häufig Gestellte Fragen
What R-value do I need for exterior walls?
In most US climate zones: R-13 for 2×4 walls and R-19 to R-21 for 2×6 walls. Check local building codes for specific requirements in your area.
What R-value for an attic?
R-30 is minimum in moderate climates. R-38 to R-49 is recommended in cold climates. The DOE recommends R-38 to R-60 for most of the United States.
Can I compress insulation to fit?
Compressing batt insulation reduces its R-value because R-value depends on the trapped air spaces. Always use the correct thickness for the desired R-value.
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