Roof Insulation Cost Calculator
Estimate what attic insulation will cost for your Oklahoma home. Enter your attic square footage, pick an insulation type, and choose a target R-value — get an instant low-to-high range for material, labor, and total cost, plus what you can expect to save on energy bills.
Enter Your Attic Details
Adjust any value — your estimate updates instantly.
Measure the attic floor area you want insulated (length × width). A typical 2,000 sq ft Oklahoma home has roughly 1,200–1,800 sq ft of attic space.
Estimated Attic Insulation Cost
Enter your attic details above to see an itemized estimate.
| Item | Low | High |
|---|
Attic Insulation Cost FAQ
How much does attic insulation cost in Oklahoma?
Most Oklahoma homeowners pay between roughly $0.50 and $4.50 per square foot of attic space installed, depending on the insulation type and target R-value. Blown-in fiberglass runs about $0.50–$1.00 per sq ft, batt runs $0.80–$1.50 per sq ft, and spray foam runs $2.50–$4.50 per sq ft. Use the calculator above for a personalized range, then call Proof Construction at (918) 734-4444 for a free, exact quote.
What R-value is recommended for attics in Oklahoma?
The U.S. Department of Energy recommends R-38 to R-49 for attics in Oklahoma's climate zone, with R-49 the preferred target for new or replacement insulation. Most Tulsa-area homes built before 2000 have R-19 to R-30, so upgrading to R-38 or R-49 is one of the most cost-effective energy improvements available.
Is blown-in or spray foam insulation better for an attic?
Blown-in fiberglass is the most economical choice for topping up attic floor insulation and typically costs $0.50–$1.00 per sq ft installed. Spray foam costs $2.50–$4.50 per sq ft but adds an air seal and the highest R-value per inch, making it a strong option for attics with ductwork or homes with persistent air leaks. A free inspection can tell you which makes more sense for your home.
How much can new attic insulation save on energy bills?
Upgrading an under-insulated attic from around R-19 or R-30 to R-38 or R-49 typically cuts heating and cooling costs by 10–20%, which is often $200–$600 per year for an average Oklahoma home. Most attic insulation projects pay for themselves within a few years through lower utility bills.
Ready for a Free, Exact Insulation Quote?
Skip the guesswork. Proof Construction will inspect your attic, measure the space, recommend the right insulation and R-value for Oklahoma's climate, and give you a precise written estimate — no obligation.
Call (918) 734-4444 or request a quote online