If you're an Oklahoma City homeowner wondering how much it costs to insulate (or re-insulate) your attic, you're asking the right question. Your attic is the single biggest source of energy loss in most homes. In the summer, an under-insulated attic acts like an oven sitting on top of your house. In the winter, all that expensive heated air rises and escapes through the ceiling. Either way, you're paying for it on every OGE or PSO bill.
We've insulated hundreds of attics across the OKC metro over the past eight years. Below is a straightforward breakdown of what you can expect to pay in 2025, what affects the price, and how to get the best value for your money.
Attic Insulation Cost by Type
The cost of attic insulation in Oklahoma City depends primarily on the type of insulation you choose. Here's what each option typically costs, installed:
Blown-In Insulation: $1.00 - $2.50 per Square Foot
Blown-in insulation is the most common and cost-effective choice for attic floors in Oklahoma City. It comes in two varieties:
- Blown-in fiberglass: $1.00 - $1.75 per square foot installed. Lightweight, non-combustible, and won't absorb moisture. R-value of about R-2.5 per inch.
- Blown-in cellulose: $1.25 - $2.50 per square foot installed. Made from recycled paper treated with fire retardant. Slightly higher R-value (R-3.5 per inch) and better at filling irregular gaps and crevices.
For a typical 1,500-square-foot Oklahoma City home, blown-in attic insulation runs between $1,500 and $3,750 for a complete job. That includes material, labor, and cleanup.
Batt Insulation: $1.50 - $3.00 per Square Foot
Batt insulation (the pink or yellow rolls you see at Home Depot) is a familiar option, but it's not always the best choice for existing attics. It works well in new construction where you can lay it perfectly between joists, but retrofitting batts into an existing attic with wiring, pipes, and HVAC ducts means lots of cutting and fitting. Gaps reduce performance significantly.
- Fiberglass batts: $1.50 - $2.50 per square foot installed
- Mineral wool batts: $2.00 - $3.00 per square foot installed (better fire resistance and soundproofing)
For most existing OKC homes, we typically recommend blown-in over batt insulation for attics because it provides better coverage and is faster to install.
Spray Foam Insulation: $1.50 - $4.00 per Square Foot
Spray foam is the premium option, and it's the only insulation that also acts as an air barrier. There are two types:
- Open-cell spray foam: $1.50 - $2.50 per square foot. R-value of about R-3.7 per inch. Good for interior applications and sound dampening.
- Closed-cell spray foam: $2.50 - $4.00 per square foot. R-value of about R-6.5 per inch. Adds structural rigidity and acts as a vapor barrier. Best for areas prone to moisture.
Spray foam is typically applied to the underside of the roof deck rather than the attic floor. This turns your attic into "conditioned space," which is ideal if you have HVAC equipment or ductwork in the attic (which many OKC homes do).
What Factors Affect the Cost?
No two attic insulation projects are exactly the same. Here are the main variables that affect your final price:
1. Attic Size and Layout
This is the most obvious factor. A 1,000-square-foot attic costs less than a 2,500-square-foot attic. But layout matters too. If your attic has lots of tight corners, low clearance areas, or multiple levels (common in older homes around Mesta Park, Heritage Hills, and Gatewood), it takes more time and material to insulate properly.
2. Current Insulation Condition
If your existing insulation is old, compressed, water-damaged, or contaminated by pests, it may need to be removed before new insulation goes in. Insulation removal typically adds $1.00 - $2.00 per square foot to the project. However, in many cases, new blown-in insulation can be added on top of existing insulation if it's still in decent shape.
3. Access and Obstacles
Attics with difficult access points, lots of HVAC ductwork, recessed lighting cans, or electrical junction boxes take longer to insulate properly. We have to work around these obstacles carefully, and that labor adds to the cost. Homes in older OKC neighborhoods like Paseo, Crown Heights, and Midtown often have more complex attic configurations than newer builds in Edmond or Moore.
4. Target R-Value
The Department of Energy recommends R-38 to R-60 for attics in Oklahoma (Climate Zone 3A). Many older OKC homes have R-11 to R-19 — well below the recommended level. Getting from R-19 to R-38 costs less than going from zero to R-49, but the amount of material needed directly affects your price.
5. Air Sealing
Before adding insulation, we strongly recommend air sealing the attic floor. This means sealing gaps around electrical wires, plumbing pipes, recessed lights, and the attic hatch. Air sealing typically adds $300 - $800 to the project but can improve the effectiveness of your new insulation by 15-25%. It's one of the best investments you can make.
OGE Rebates Can Reduce Your Cost
If you're an OGE customer (and most Oklahoma City homeowners are), you may qualify for insulation rebates through OGE's energy efficiency programs. These rebates can offset a significant portion of your project cost. The exact rebate amount depends on the type and amount of insulation installed, but we've seen customers save anywhere from $200 to $500 or more.
Bo's Insulation handles the rebate paperwork for our customers. We know the requirements, we document the job properly, and we make sure you get every dollar you're entitled to. For more details, check out our complete guide to OGE insulation rebates.
ROI and Payback Period
Here's the bottom line most OKC homeowners want to know: how long until the insulation pays for itself?
Based on our experience with hundreds of local projects, most homeowners see a 20-40% reduction in heating and cooling costs after properly insulating their attic. For an average Oklahoma City home spending $200-$300 per month on energy (and much more during July/August and December/January), that translates to roughly $600 - $1,400 in annual savings.
On a $2,500 blown-in insulation project, you're looking at a payback period of 2-4 years. After that, it's pure savings — for as long as you own the home. And since insulation lasts 20-30+ years, that's a significant return on investment.
There's also the comfort factor that doesn't show up on a spreadsheet. Rooms that were always too hot in summer or too cold in winter become livable. Your HVAC system runs less, which means fewer repairs and a longer equipment life. If you've ever suffered through an Oklahoma August in an upstairs bedroom with thin insulation, you know exactly what we're talking about.
Why Bo's Insulation Offers Competitive Pricing
We're a family-owned company — just the Bohannan brothers and our crew. We don't have a huge corporate overhead, a fleet of branded trucks, or a national marketing budget to fund. That means our pricing is straightforward and competitive.
We also don't upsell. If blown-in cellulose is the right answer for your attic, we'll tell you — even if spray foam would be a bigger ticket. We'd rather do the right job and earn a five-star review (we have 89+ of them) than pad the invoice.
Every estimate is free, and we'll walk you through exactly what we recommend and why. Plus, 20% of the proceeds from every project go to a local nonprofit, so your investment does double duty — making your home better and your community stronger.
Get Your Free Attic Insulation Estimate
The best way to find out what attic insulation will cost for your specific home is to get a professional assessment. We'll come out, inspect your attic, check your current insulation levels, and give you an honest quote — typically within a day or two of your call.
Call Bo's Insulation at (405) 437-0146 or reach out online for your free estimate. We serve the entire OKC metro, including Edmond, Norman, Moore, Yukon, Mustang, Midwest City, and surrounding communities.