Insulation R-Value Thickness Calculator
calc_insulation_r_valueRead-only
Thickness needed to reach a target R-value for the R-per-inch printed on your insulation product. Formula: Thickness(in) = target R ÷ R per inch. Volume in board feet = area(sq ft) × thickness(in).
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| target_r | No | Target R-value; default 38 | |
| area_sqft | No | Area (optional) (sq ft); default 1000 | |
| r_per_inch | No | R-value per inch (product label); default 3.2 |