What is a Board Foot?

In the spray foam industry, material is measured in "board feet." A board foot is a unit of volume, not length. It represents a one-foot by one-foot square area (1 sq ft) insulated to a depth of one inch.

The formula is simple: Total Board Feet = Area (sq ft) × Depth (in). This calculator determines the total board feet your project requires, which is the primary factor contractors use to price a job.