What spray foam insulation means
Spray foam is insulation sprayed as a liquid that expands and hardens in place. Open cell foam is lighter and lets vapor through; closed cell foam is denser, insulates more per inch and resists vapor.
Also called open cell foam, closed cell foam, SPF.
Where it matters on a insulation job
Foam seals air and insulates in one step but costs more, needs protective gear and ventilation during spraying, and usually must be covered by a thermal barrier. Quote the thickness and type by area.
What it costs
Koira's spray foam insulation cost guide puts a typical job at $2,900, with most between $1,450 to $4,350. The guide shows its sources and what moves the price. The insulation cost calculator prices a job line by line.
Work it out
- Free calculator: Insulation cost calculator
- Cost guide: Spray foam insulation cost
- Tools, templates and guides: Free insulation resources