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.
Technical Specifications
| Parameter | Standard Value |
|---|---|
| Actual Dimensions | 15" or 23" wide × 93" long batts (fits 2×4 stud wall) |
| Unit Weight / Density | 0.5 lbs per sq ft |
| Estimated Price Range | $0.50 - $0.80 per sq ft |
| R-Value | R-13 |
| Wall Cavity Fit | 2×4 stud wall (3.5" depth) |
| Batts per Pack | 10 batts (covers ~40 sq ft) |
Overview & Cost Implications
R-13 fiberglass batt insulation is the standard choice for 2×4 exterior walls in mild to moderate climates. It provides a cost-effective thermal barrier that meets minimum energy code requirements in most US states.
Standard Formula Used
For estimating materials quantity and weight on job sites, estimators use this mathematical model:
Packs = Wall Area (sq ft) / 40 × 1.05 (waste) INTEGRATED ESTIMATOR
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