Insulation

Not every attic needs spray foam at the roofline. Green Attic reviews how the attic is meant to dry before recommending spray foam or another insulation plan.

Small areas of cured spray foam can often be trimmed by hand. Larger jobs in attics, roof decks, or deep gaps usually require more cleanup and need more care due to a higher risk of damage.

Spray foam insulation in Chicagoland starts at about $0.75 per sq ft for 1 inch of open-cell spray foam and $1.25 per sq ft for 1 inch of closed-cell spray foam. Final pricing varies based on foam type, thickness, access, prep work, old insulation and more.

Choosing the right attic insulation involves balancing cost and performance, with options ranging from $2,700 to $8,600 per 1,000 square feet. Modern alternatives like cellulose and spray foam offer superior benefits over traditional fiberglass in extreme conditions.