Question 1

How much does attic insulation cost?

Accepted Answer

For a 1,000 sq ft attic: blown-in fiberglass runs $1,500–$3,500; cellulose $1,700–$3,800; fiberglass batts $1,200–$2,800; spray foam $3,000–$7,500 installed.

Question 2

What R-value do I need?

Accepted Answer

Most U.S. climates call for R-38 to R-60 in the attic. Your state energy code and utility rebate program specify the target for your ZIP code.

Question 3

Is removing old insulation required?

Accepted Answer

Not always. If the old insulation is wet, contaminated or compressed, removal ($1–$2 per sq ft) is usually recommended before adding new material.

Question 4

Does air sealing matter more than insulation?

Accepted Answer

Often yes: sealing gaps around lights, fans and top plates before insulating is the highest-return part of an attic project.

Attic Insulation Cost in New York

Calculate your attic insulation cost

Estimated installed cost

Get local installer pricing

What affects cost in New York

Related