Blown-In Insulation Cost - Same-Day Service, Done Right the First Time

How Much Does Blown-In Insulation Cost in Dallas?

Blown-in insulation in Dallas typically costs between $1,800 and $4,200 for a standard 1,500 to 2,000 square foot attic, with most homeowners landing right around $2,600 to $3,200 for fiberglass or cellulose at R-38 to R-49. On a per-square-foot basis, you’re looking at $1.10 to $2.30 installed, depending on material, depth, and whether your attic needs air sealing or old insulation removal first. That’s a real range for the Dallas market in 2026, and we give you a written price before any work starts so the number never moves at the door.

This is the exact question we’ve answered for Dallas homeowners since 2002, and it’s the one where honesty matters most. Here’s the full breakdown, what pushes the price up or down, and how to know you’re paying the right amount.

Key Takeaways: Blown-In Insulation Cost in Dallas

• Typical total cost: $1,800 to $4,200 for a standard attic, before any rebates or utility incentives.
• Per square foot: $1.10 to $2.30 installed, depending on material and R-value.
• Cellulose runs slightly less than fiberglass in Dallas, but the gap is narrow; spray foam is a separate category at $3.50 to $7.00 per square foot.
• Biggest cost variables: attic size, target R-value, old insulation removal, and whether you add air sealing.
• Labor is 40 to 50 percent of the bill, which means who installs it matters as much as what they install.
• Free estimates: call (469) 916-4622 and we’ll give you a written price after measuring the attic, not a range over the phone.

Blown-In Insulation Cost Breakdown (2026)

Here’s what Dallas homeowners can expect to pay in 2026, broken down by material and scope. These numbers reflect what we see across the Metroplex, from Lakewood to Frisco to Waxahachie, and they’re based on actual job pricing, not national averages that don’t account for Texas attics.

Three things drive those numbers more than anything else in Dallas.

First, the condition of what’s already up there. If you’ve got 25-year-old fiberglass batts that have flattened to R-8 and are full of rodent droppings from rats that found their way in through your soffit vents, you’re looking at removal before anything new goes down. Removal adds $1 to $2 per square foot, and in a city where attics hit 140 degrees in August, it’s not optional. You don’t bury a problem; you haul it out, clean the deck, seal the gaps, and start fresh.

Second, R-value. Older Dallas homes built before 2000 often sit at R-11 to R-19, which is nowhere near what our summers and winters demand. Building code in Dallas now calls for R-38 minimum, and we recommend R-49 for most homes. The difference between topping off to R-38 and doing a full removal to R-49 is about $800 to $1,600 on a standard attic, and it’s the single best money you can spend if the old insulation has degraded.

Third, air sealing. This is the part nobody quotes but everybody needs in Dallas. Your home’s envelope leaks at the top plate, around can lights, at plumbing penetrations, and through the chase where your furnace and water heater flues run. Sealing those before blowing insulation costs $600 to $1,200 on a typical attic and it’s the difference between insulation that performs and insulation that just sits there while your heated air escapes into the attic in January.

What Affects Blown-In Insulation Pricing in Dallas

• Attic square footage. The math is simple: more area, more material, more labor. A 1,200 sq ft ranch in Garland costs less to insulate than a 3,000 sq ft two-story in Preston Hollow, even though they’re both technically “Dallas.”
• Old insulation condition and removal. Homes in East Dallas and Oak Cliff built before 1970 often have original insulation with vermiculite or degraded cellulose that needs full removal. That’s a line item, not a surprise upgrade.
• Access and attic height. Some Dallas bungalows have attics you can practically stand in. Others, especially in the M Streets and Lakewood, have low-pitch roofs where the crew is working on their knees the entire time. Labor hours move the price.
• Air sealing before the blow. We mentioned it above, but it deserves its own line: sealing the attic floor before you blow is the highest-ROI upgrade available. It costs $600 to $1,200 and pays for itself in the first two years on most Dallas utility bills.
• Material choice: fiberglass vs. cellulose. Fiberglass runs slightly higher on material cost but holds R-value well in humid conditions. Cellulose is denser and does a better job at retarding air movement, which matters in our hot, dry summers. We’ll recommend based on your attic’s specific conditions, not on whichever pallet happens to be on the truck.
• Rebates and utility incentives. Oncor and TXU have programs that occasionally offer insulation rebates for Dallas homeowners. These shift from year to year, and we’ll point you toward current ones if you ask on the call at (469) 916-4622. We don’t pad the price and then “subtract” a rebate; the written price is the real price.

Blown-In Insulation Cost per Square Foot: What Dallas Homeowners Actually Pay

The per-square-foot number people ask about most is the installed price, material and labor together. In Dallas right now, blown-in fiberglass runs $1.20 to $1.80 per square foot at R-38 to R-49, and cellulose runs $1.10 to $1.65. Those numbers include the two-person crew, the machine, the material, and the clean-up. They don’t include removal, air sealing, or any prep work.

Here’s the part that matters more than the square foot price: insulation isn’t a commodity product where the lowest bid wins. It’s a system, and the system only works if the prep is done right. Blowing R-49 over a dusty, leaking attic floor with no air sealing is like putting a winter coat on over a wet shirt. It feels like you did something, but you’re still going to be cold. And in Dallas, cold means January nights in the 30s with a furnace that runs nonstop.

We installed blown-in insulation across Dallas for over two decades under the Kingswell name, and we’ve seen the differences between jobs done to a written scope and jobs done to a lowball quote. The lowball never includes removal. It never includes sealing. It never includes the part where the crew actually shows up in the window they promised. We do it differently. Every single time.

Labor vs. Materials: Where the Money Goes

Dallas homeowners often ask why insulation labor costs what it does. It’s a fair question, so here’s the honest answer:

• Material accounts for roughly 50 to 60 percent of the job. Blown-in fiberglass from Owens Corning or Knauf, or cellulose from GreenFiber, runs $0.45 to $0.75 per square foot at R-49 depending on volume.
• Labor accounts for roughly 40 to 50 percent. You’re paying for a two-person crew, the blowing machine, the ventilation, the safety gear for a 140-degree attic, and the hour of cleanup afterward.
• Prep and disposal vary. If old insulation is coming out, you’re paying for bags, the vacuum truck, landfill fees, and another hour or two of crew time in a hot, dusty space.

That labor number is why we’re careful about who we send into your home. Every Woolsey technician is background-checked and uniformed. You know exactly who’s walking through your front door, and you know they’ve been vetted. That matters in a trade where too many companies send whoever was available that morning, and you’re left hoping they know what R-value means.

How to Save on Blown-In Insulation in Dallas

Saving money on blown-in insulation doesn’t mean finding the cheapest bid. It means not paying twice. Here’s what actually works in Dallas:

• Get a written price before work starts. This is the Kingswell Way, and it’s non-negotiable for us: you get a written price after we measure, and that number doesn’t move. No door-step additions, no “we found something while we were up there” phone calls. The price is the price.
• Time the job for spring or fall. Attic work is more pleasant in March or October, and crews can move faster, which sometimes shaves a bit off labor. We’d rather you be comfortable anyway.
• Bundle air sealing with your blow. This seems like spending more, but it’s the opposite. Sealing before you blow means the insulation actually does its job, which means you’re not calling us back in three years to add more, and you’re not paying Oncor $400 a month in August because your conditioned air is escaping through the top plate.
• Check current rebates. Some years Oncor and CoServ offer insulation rebates in Dallas. We’ll tell you what’s active when you call (469) 916-4622. No games, no inflated prices designed to eat the rebate.
• Don’t wait until the attic is failing. We see this constantly in older Dallas neighborhoods like Casa View and Lake Highlands. The insulation has settled to R-9, the HVAC has been overworking for five years, and the homeowner has been paying $100 extra a month every single summer. The sooner you fix it, the sooner the savings start.

Blown-In vs. Spray Foam: What’s the Real Difference in Dallas Pricing?

This is the fork in the road for a lot of Dallas homeowners, so let’s be clear: blown-in insulation and spray foam insulation are different products for different situations. Blown-in is the right call when you have a fairly standard attic that needs a thermal barrier. Spray foam, which we also install, is the right call when you’re converting an attic into living space, or when you need an air barrier and thermal barrier in one application.

On price: spray foam in Dallas runs $3.50 to $7.00 per square foot for open-cell, and $5.50 to $9.00 for closed-cell. It’s a two-part liquid that expands on contact and seals gaps airtight. For most Dallas homeowners with a traditional ventilated attic, blown-in at R-49 is the better value. We’re happy to walk you through both options when you call, and we’ll recommend the one your attic actually needs, not the one with the higher ticket.

We work with eight leading insulation brands, including Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. That range means we’re never stuck recommending one material for every home. Your attic gets what fits it, not what’s already loaded on the truck.

Why the Installer Matters as Much as the Price in Dallas

You can buy the best Owens Corning fiberglass on the market, and if it’s blown unevenly, left shallow around the eaves, and never sealed at the top plate, it won’t perform. We’ve fixed enough bad installs across Dallas to know this isn’t theoretical. It’s the main reason a job that should have cost $2,500 ends up costing $5,500: the first installer did it wrong, and now someone has to undo it.

That’s where our 365-Day Done Right Promise comes in. If it’s not done right, we make it right, in writing, at no charge. That’s the whole sentence. It applies to every blown-in insulation job we do in Dallas, and it’s included on every job. If the insulation settles, if the R-value comes in low, if the air sealing fails, we come back. That’s what we mean when we say a written guarantee on every repair and installation, with a free second visit if the work fails.

Glenn Hartley, who leads Woolsey Insulation Dallas, has been delivering that promise since 2002 as part of the Kingswell family of independently owned and operated insulation companies. Not a franchise, not a chain. A Dallas business that answers its own phone.

FAQs – Blown-In Insulation Cost in Dallas

How much does blown-in insulation cost for a 1,500 sq ft attic in Dallas?

For a 1,500 square foot attic in Dallas, you’ll typically pay $1,700 to $2,800 to blow fiberglass or cellulose to R-49 over existing insulation. If the old insulation needs full removal first, expect $2,900 to $4,200. Call (469) 916-4622 for a free estimate with exact numbers for your attic.

Is it cheaper to blow insulation yourself or hire a Dallas company?

You can rent a blower and buy bags of cellulose for around $0.50 to $0.70 per square foot in Dallas, which looks cheaper than the $1.10 to $2.30 installed rate. But you’re not getting air sealing, you’re not getting removal, and you’re not getting a written guarantee. And in a hot attic, one day of DIY insulation work is how heat exhaustion happens. We recommend a trained professional for this job.

How much does it cost to add blown-in insulation to an existing attic in Dallas?

Adding blown-in insulation over existing fiberglass or cellulose in Dallas runs $1,700 to $2,900 for most homes, assuming the existing material is dry, uncontaminated, and at least somewhat intact. If it’s compressed, wet, or full of rat droppings, removal changes the scope. We give the written price after we see the attic.

What’s the payback period for blown-in insulation in Dallas?

Most Dallas homeowners recover the cost of blown-in insulation within 3 to 5 years through lower cooling bills. Homes with air sealing added see the fastest payback, often under 3 years, because summer AC savings are substantial when your attic stops leaking conditioned air. After 5 years, it’s pure savings.

Can you install blown-in insulation the same day in Dallas?

Yes. Most standard blown-in insulation jobs in Dallas are completed in one day, typically 3 to 6 hours on site. If removal or air sealing is included, expect the crew to be there most of the day. Call (469) 916-4622 and we’ll give you a written price and a real arrival window before anything starts.

Get a Written Price for Blown-In Insulation in Dallas

You’ve got the ranges. You know what drives the cost. The next step is getting a real number for your specific attic, and that starts with a phone call to (469) 916-4622. We answer live, 24 hours a day, 7 days a week, no voicemail maze. We’ll schedule a measurement, send a background-checked, uniformed technician, and hand you a written price before any work starts. That’s the Kingswell Way. We’ve been doing it in Dallas since 2002, and every job comes with the 365-Day Done Right Promise in writing.

Read more about our Blown-In Insulation in Dallas service, or head back to our home page to learn more about the Kingswell Guarantee.

Pricing reflects the Dallas market as of 2026. Woolsey Insulation Dallas offers free estimates – call (469) 916-4622.