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 $1,650 to $4,200 for a standard attic of 1,500 to 2,500 square feet, including materials and labor. Most Dallas homeowners pay around $2,800 to bring an under-insulated attic up to the DOE-recommended R-38 to R-60 for our climate zone. The price depends mainly on your attic’s current R-value, the material you choose (fiberglass or cellulose), and whether the crew needs to air seal first.

This guide breaks down real 2026 Dallas pricing, what drives the number up or down, and what questions to ask before you hire anyone. If you want a written estimate for your specific attic, call Alden Insulation Dallas at (940) 748-1726. The price we quote is the price you pay, in writing, before any work starts.

Blown-In Insulation Cost Breakdown (2026)

Here’s what blown-in insulation actually costs in the Dallas market right now. These are line-item ranges based on the jobs our crew runs across Dallas, Garland, Mesquite, Richardson, and Plano.

Key Takeaways

• Most Dallas attics need R-38 to R-60. If yours is sitting at R-15 or R-19, which is common in homes built before 2010, you’re under-insulated for our summers.
• Fiberglass is slightly cheaper up front. Cellulose delivers a higher R-value per inch, which matters if your attic depth is limited.
• Air sealing always pays for itself. A 2025 job in Richardson showed a 22% drop in July cooling load after sealing and blowing to R-49.
• The biggest price variable is removal. If your attic is clean and dry, skip it and save $1,000+.

What the Written Price Includes

At Alden Insulation Dallas, our written estimate includes every line item above, broken out so you can see exactly where your money goes. No vague Blown In Insulation services line. You get the material type, the target R-value, the square footage we’re covering, the air sealing scope, and the final number. Bryce Holloway, who leads our Dallas operation, signs that estimate personally. When the crew shows up, that number doesn’t move unless you ask us to change the scope.

What Affects Blown-In Insulation Pricing in Dallas

Every attic is different, and Dallas homes span a wide range of eras and construction styles. A 1950s bungalow in Lakewood has different needs than a 2015 build in Frisco. Here’s what actually moves the number.

• Current R-value. If your attic already has R-30 and you’re topping up to R-49, that’s a smaller job than an attic with bare drywall and scattered batts. We measure depth and density before quoting, not after.
• Attic square footage and geometry. Low-slope roofs, hip roofs with tight eaves, and attics with lots of cross-bracing take longer to blow evenly. A 2,200 sq ft attic in Plano with a simple gable roof will price lower per square foot than a 1,600 sq ft attic in Oak Cliff with three dormers and a cathedral ceiling section.
• Air sealing scope. Older Dallas homes, particularly those built before 1980, have more penetrations: recessed lights, plumbing stacks, chases, and top plates. Sealing 20 linear feet is quick. Sealing 120 linear feet plus replacing non-IC-rated can light housings adds real labor hours.
• Material choice. Cellulose costs slightly more per square foot but delivers R-3.4 per inch versus fiberglass at R-2.5 per inch. If your truss depth is only 10 to 12 inches, cellulose may be the only way to hit R-38 without rafter work.
• Removal needs. Rodent damage, old rock wool that’s compacted to the density of cardboard, or mold from a past roof leak all require removal first. That’s a separate line item and it’s the most common reason quotes from different companies look wildly different. Some contractors quote the blow-in price only and “discover” the removal need after starting. We inspect first and write everything down.
• Time of year. Dallas attic work is genuinely seasonal. June through September, crews can’t safely spend more than a few hours in a 150°F attic at a stretch. Appointments fill slower, and some companies charge a summer premium. Our pricing stays flat year-round, but summer jobs may be scheduled in shorter windows.

Blown-In Insulation Materials: What the Brands Cost in Dallas

We install and remove insulation using products from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. We name these because you should be able to research what’s going into your attic before you sign anything. Here’s how the material costs shake out in the Dallas market.

Fiberglass (Loose-Fill)

Fiberglass loose-fill from Owens Corning, Johns Manville, and Knauf runs $28 to $48 per bag at Dallas suppliers, with a bag covering roughly 35 to 40 square feet at R-30 depth. A 1,800 sq ft attic to R-38 needs about 45 to 55 bags, so material alone lands between $1,250 and $2,650. You’ll also pay for the blowing machine rental ($80 to $150 per day at Dallas equipment yards) if you’re doing it yourself, though we don’t recommend DIY attic work in a Texas summer.

Cellulose

GreenFiber cellulose costs $14 to $19 per bag in the DFW market, covering about 40 square feet at R-30 per bag. Material for an 1,800 sq ft attic to R-38 runs $950 to $1,450. It’s cheaper at the material level, but the labor is slightly higher because cellulose requires damp-dust management and careful settling expectations. The installed cost ends up similar to fiberglass.

Spray Foam (for reference)

Icynene and Demilec open-cell spray foam runs $1.90 to $3.25 per board foot in Dallas, and closed-cell runs $2.75 to $4.60 per board foot. Spray foam is a different product category than blown-in, but we mention the brands because some Dallas homeowners find their attic has vaulted sections where foam is the only practical option. If that’s your situation, we’ll tell you honestly and quote accordingly.

Dallas Climate and Why R-Value Matters Here

Dallas sits in DOE Climate Zone 3A, where the recommendation for attic insulation is R-38 for fiberglass and R-38 for cellulose, up to R-60 for homes that want maximum summer cooling efficiency. The reason is simple: your attic hits 140°F to 150°F on an August afternoon. If your ceiling insulation is thin, that heat radiates down into your living space all afternoon and evening, and your AC runs to fight a battle it cannot win.

We regularly see Dallas homes built between 1970 and 2005 with R-19 batts laid between the joists and nothing covering the joists themselves. That leaves the wood framing as a thermal bridge, conducting attic heat straight into the drywall below. A blow-in job that covers the joists to a consistent R-38 depth closes that gap. In a 2,400 sq ft two-story home in the Richardson ISD area, that typically means 14 to 16 inches of fiberglass or 11 to 12 inches of cellulose.

The R-value math is straightforward: R-38 means the insulation resists heat flow about 38 times better than an uninsulated surface. If you’re at R-19, you’re losing roughly twice as much heat transfer through your ceiling as you would at R-38. It’s not a comfort upgrade, it’s a mechanical load reduction.

How Much Does Air Sealing Add in Dallas?

Air sealing is the step most homeowners skip, and it’s the step that determines whether your new insulation actually performs. In Dallas attics, the biggest leak points are:

• Recessed can lights – non-IC-rated fixtures leak conditioned air straight into the attic. Sealing or replacing them costs $25 to $75 per fixture.
• Top plates – the gap where interior walls meet the attic floor. Sealing runs $2 to $6 per linear foot.
• Plumbing and electrical penetrations – $10 to $30 each.
• Attic hatch or pull-down stairs – sealing and insulating the access point runs $75 to $350 depending on whether you need a new hatch cover or an attic tent.

A typical 1,800 sq ft Dallas home needs $400 to $750 in air sealing before insulation goes in. That’s not an upsell. It’s the difference between an attic that holds its R-value and one that leaks conditioned air around the insulation. In McKinney, we sealed a 1,950 sq ft attic with 14 recessed lights, two plumbing stacks, and a leaky pull-down stair, and the homeowner’s August electric bill dropped from $412 to $298 the following month. The air sealing paid for itself in one summer.

DIY vs. Professional Blown-In Insulation Cost

You can rent a blowing machine from a Dallas home improvement store for $80 to $150 per day, buy bags of fiberglass or cellulose, and do the work yourself. On paper, a DIY attic blow-in to R-38 on an 1,800 sq ft home costs $1,100 to $2,200 in materials. The hidden costs are what get you.

First, working in a Dallas attic in any month other than December through February means working in heat that can exceed 130°F. The attic surface itself can reach 150°F or higher in July and August. Dehydration and heat exhaustion are real risks. We schedule summer attic work in early-morning windows for our own crew for exactly this reason.

Second, most DIY blow-ins fail to hit a consistent depth. You end up with 15 inches in one corner and 8 inches in another, and the R-value varies just as much. Third, DIY work skips air sealing almost by default, because that’s the part that takes training and patience. The result is insulation that underperforms from day one.

Professional installation from Alden Insulation Dallas includes depth markers in every bay, consistent coverage verified before we leave, air sealing recommended and priced separately, and a written guarantee that covers the work for 365 days. If the insulation settles below the promised R-value inside that year, we come back and top it up at no charge. That’s the 365-Day Done Right Promise, and it’s in writing on every job we do.

Read more about our approach on our Blown-In Insulation in Dallas page, or call (940) 748-1726 to talk through your attic’s specifics.

How to Save on Blown-In Insulation in Dallas

Blown-in insulation is not the place to chase the lowest bid. It’s the place to get a fair, written price and a guarantee that holds up. Here’s how to save without sacrificing quality.

• Get your attic measured by someone who will give you a written breakdown. Square footage, current R-value, target R-value, air sealing scope, and the price for each line. If a contractor won’t itemize, the number they give you isn’t real.
• Ask about the guarantee before you sign. What does it cover? How long? What happens if the insulation settles or cold spots appear? The Alden standard is a written 365-day guarantee, and if it fails, we return free of charge.
• Don’t pay for removal you don’t need. If your attic insulation is dry, free of rodent damage, and not compressed to nothing, you can blow new material right over it. Removal is a real need sometimes, but it should be recommended based on inspection, not added to every quote by default.
• Combine with air sealing. It adds a few hundred dollars up front and reduces your HVAC load every month after. If you’re going to spend $2,500 on insulation, spending $500 on sealing the attic floor is the highest-return add-on in the whole project.
• Check for utility rebates. Oncor and some Dallas-area municipal utilities run periodic insulation rebate programs. Ask your provider directly. We’ll help you document the job if a rebate applies.

We offer free estimates. Call (940) 748-1726 and you’ll get a live person on the phone, any hour of the day, not a voicemail. We’ll schedule a measurement at a time that works for you, and the written price you approve is the price on the invoice.

FAQs – Blown-In Insulation Cost

How much does blown-in insulation cost per square foot in Dallas?

Blown-in insulation in Dallas runs $1.25 to $2.40 per square foot installed, depending on material and attic condition. Fiberglass lands on the lower end at $1.25 to $2.10, while cellulose runs $1.40 to $2.40. A 1,800 sq ft attic to R-38 typically totals $2,250 to $4,320 before any air sealing or removal. Call (940) 748-1726 for an exact written quote, free of charge.

Is it cheaper to blow insulation myself in Dallas?

Yes, a DIY blown-in job on an 1,800 sq ft attic runs $1,100 to $2,200 in materials versus $2,250 to $4,320 professionally installed. But that savings disappears quickly when you factor in a summer attic that reaches 150°F, inconsistent depth, skipped air sealing, and no written guarantee. Most Dallas homeowners we talk to who attempted a DIY blow-in call us within two years because the coverage was uneven and their upstairs still wouldn’t cool. Our price includes depth markers, verified coverage, and a 365-day written guarantee.

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

Adding blown-in insulation to an existing Dallas attic that already has some cover typically runs $1,450 to $2,800 for a top-up to R-38 or R-49. The cost depends on how much material is needed to reach the target depth and whether the existing insulation needs any attention first. If air sealing is included, add $400 to $750. Call (940) 748-1726 for a measurement and written quote at no cost.

How long does blown-in insulation last in Texas?

Fiberglass blown-in insulation holds its R-value for 30 to 50 years if it stays dry and undisturbed. Cellulose holds its R-value for 20 to 30 years, though it settles slightly in the first year and should be blown slightly over-depth to compensate. The bigger risk in Dallas is moisture from a roof leak or condensation, which compresses either material and destroys its performance. If your attic has had a leak, have it inspected before adding insulation. We’ll tell you if removal is needed and price it separately.

When can you start a blown-in insulation job in Dallas?

We schedule blown-in insulation jobs in Dallas within 3 to 7 days of the estimate in most cases. Summer months may push that slightly longer because we limit attic work to early-morning hours for crew safety, but we never quote a job and then go silent for weeks. Call (940) 748-1726 and we’ll get you on the schedule with a written price before any tools come off the truck.

The Garrison Standard and What It Means for Your Price

Alden Insulation Dallas is part of the Garrison Partners family, established in 2002. That matters because The Garrison Standard governs every job we run in Dallas, and it’s the reason our pricing works the way it does. No surprises at the door. No crew of strangers who show up late or not at all. No warranty that evaporates when the truck pulls away.

Every Alden technician is background-checked and arrives in uniform, inside the scheduled window we gave you. Our calls are answered by a live person, 24/7, not a voicemail or a call center script. And every job carries the 365-Day Done Right Promise: if the insulation work fails within a full year, we return and make it right at no charge, in writing.

Bryce Holloway leads our Dallas operation. He signs every estimate and stands behind every job. If you get a quote from Alden Insulation Dallas, you’re getting a number from someone who will still be reachable after the job is done, not a salesperson who vanishes after the contract is signed.

The brands we install are ones you can research yourself: Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. We don’t hide behind “premium materials” language. You’ll know exactly what’s going into your attic, and you can look up the manufacturer specs before you commit.

Get a Written Blown-In Insulation Estimate in Dallas

If you’re ready to find out exactly what your attic needs and what it will cost, call Alden Insulation Dallas at (940) 748-1726. We’ll schedule a free measurement, walk you through what we find, and hand you a written price with every line item broken out. The number you approve is the number on your invoice, guaranteed in writing for 365 days.

Or start with our home page to see how we approach attic work across the Dallas market.

Written by Bryce Holloway, Owner at Alden Insulation Dallas, serving the Dallas metro area since joining Garrison Partners in 2002.

Pricing reflects the Dallas market as of 2026. Alden Insulation Dallas offers free estimates – call (940) 748-1726.