What is a board foot?

Spray foam insulation is measured in board feet and we understand that can be a confusing term in how it is applicable.

Understanding how to measure a board foot is useful because it will allow you to accurately estimate the installation cost and know just how much space you will be insulating

Board feet are calculated from the square footage of the cavities in the area you going to insulate.

Typically, the dimensions of a board foot is 12 inches by 12 inches by 1 inch.  The equation of a board foot is a volume measurement and in this case; used to find out how much spray foam is needed to fill the space.  To get this measurement you would multiply the length by the height by the thickness or R-Value necessary.


Lapolla has over 30 years of expertise helping home and building owners cut their energy bills.

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Related Resources

What is R Value?

The basic function of insulation is to provide a resistance to the flow of heat. R-Value is the term in which an insulation's thermal resistance is rated. Which also indicates the resistance to the flow of heat.

Metal Building Application

Spray foam insulation are proven to work well in a variety of climates and scenarios.  Licensed property specialists can apply the solutions onto ceilings, floors and walls, and the materials quickly seal a building's envelope.

How Safe is Spray Foam?

Spray Foam material is just as safe as the foam pillows you rest your head on.  As it is also used in clothing, automobiles, and electronic equipment as well as many other daily used items.

Crawl Space Insulation

Crawl spaces are peak entry points where humid summer or cold winter air can disturb a home’s temperature stability.  This especially can cause energy bills to skyrocket during the peak of winter and summer.