Spray Foam Insulation in Sacramento

Spray foam is the premium option: it insulates and air-seals in a single application, expanding into every crack and gap. For hard-to-reach areas, cathedral ceilings, and maximum efficiency, nothing else comes close. Call (916) 555-0140. Free matching, no obligation.

Open Cell vs. Closed Cell

Open cell foam ($3.80–$4.95/sq ft): lighter, less expensive, excellent air-sealer. Best for interior applications — attic rooflines, wall cavities.

Closed cell foam ($5.35–$6.75/sq ft): denser, higher R-value per inch, adds structural rigidity, resists moisture. Right for crawlspaces, rim joists, anywhere moisture is a concern.

Where Spray Foam Shines

• Attic rooflines (sealed, conditioned attic — popular where HVAC sits in the attic)
• Cathedral/vaulted ceilings with no attic access
• Crawlspaces and rim joists
• Garage-to-house walls and bonus rooms over garages

What It Costs

Roughly 2–3x blown-in for the same area. A 1,500 sq ft attic floor in open cell: $3,000–$5,000+. Full attic envelope costs significantly more but moves your thermal boundary to the roofline.

Honest Tradeoffs

Harder to modify later, must be installed by trained applicators with proper ventilation during curing, and the upfront cost is real. A good contractor tells you when blown-in gets 80% of the benefit for 40% of the price. 25C tax credit eligible: 30% back, up to $1,200/year.