How Much Does Attic Insulation Cost in DFW?

Howdy, neighbor! My name's Neal, and I run DFW Attic Insulation, a local crew based right here in North Texas. I've been in the roofing and construction industry for over 20 years. One thing I kept seeing? Homeowners sweating in homes that should've felt cool as a Whataburger milkshake in December.

The most common question we get is what attic insulation costs. Here's the answer. For a typical 1,500 sq ft attic, blown-in fiberglass installed with air sealing and baffles runs $1,300 to $3,200 depending on the R-value you choose. R-38 is the golden number for North Texas attics — R is for "resistance," not "ridiculously hot attic."

| R-Value | Price Range | What's Included | |---|---|---| | R-38 | $1,300–$2,200 | Materials, labor, air sealing, baffles, cleanup | | R-49 | $1,600–$2,700 | Materials, labor, air sealing, baffles, cleanup | | R-60 | $1,900–$3,200 | Materials, labor, air sealing, baffles, cleanup |

Those prices are all-in. No hidden fees, no "we'll know for sure when we get up there" surprises. The Department of Energy has a good guide on why air sealing matters before insulation — it's not optional if you want real savings.

I've been in 3,940 attics across DFW. Seen things I can't un-see. Mostly fiberglass dust. But also some raccoon families I got attached to.

What affects the price?

Three things determine your final number. Square footage is the biggest variable. A 1,000 sq ft attic costs a lot less than a 2,000 sq ft attic. Current condition matters too — if the old insulation is contaminated or needs removal, that adds to the cost. And access plays a role. Attics with low clearance, lots of obstructions, or no walk boards take more labor.

The IECC 2021 sets R-38 as the minimum attic insulation for Climate Zone 3 (DFW), with a U-factor limit of U-0.030. Most DFW homes built before 2000 fall well below this code requirement. The International Residential Code (IRC) Section R806 also requires balanced attic ventilation at a minimum 1:300 ratio when a vapor barrier is present.

What does that mean for your energy bill?

The average DFW homeowner saves $400 to $800 per year after upgrading to R-38 or R-49. Most people recoup the cost in 2 to 4 years. I had a customer in Plano a few years back. July electric bill: $412. They went with R-49 and air sealing. Next month's bill: $246. That's $166 in monthly savings. The job paid for itself in under two years.

And that's not counting the comfort improvement. No more 10-degree difference between your first and second floor. No more AC running from April to October without a break. Energy Star says sealing air leaks and adding insulation can save up to 10% on annual energy bills. Our customers typically see more.

R-38 vs R-49 — which one should you pick?

We recommend R-38 minimum for DFW. Climate zone 3 — the "Texas Toast" zone. You can check the DOE's climate zone map and R-value recommendations to see what's right for your area.

R-49 is better if you have the ceiling height. The extra cost to go from R-38 to R-49 is typically $300 to $500. The payback is usually under 2 years. Here's a hard truth: if your current insulation is level with or below your floor joists, you don't have enough. If it's contaminated or damaged, read about the replacement process.

Is it worth it for your home?

For the vast majority of DFW homes built before 2010, the answer is yes. If your attic has less than R-19 — about 6 inches of fiberglass — you're leaving money on the table every single month.

One thing I tell people: don't just pick the cheapest quote. The cheap insulation installer is usually cutting corners: thin material, skipped prep work, or uninsured labor. You get what you pay for.

Also worth knowing: we've told plenty of homeowners their insulation was fine. We'd rather lose a sale than sell something you don't need. For comparison, HomeAdvisor reports the national average attic insulation cost at $2,100, with most homeowners paying between $1,700 and $2,500. Angi data shows DFW pricing runs $1 to $3 per square foot for standard blown-in installation, while spray foam ranges from $2 to $5 per square foot. Bob Vila's 2026 cost guide puts the national average at $2,500 for a typical attic project. These aggregator figures include contractor markups and lead-generation fees, which is why direct quotes from local specialists often run lower.

Common questions, straight up

Give us a call. We'll come take a look at your attic with a thermal camera, give you a written quote, and tell you honestly if you even need anything. P.S. Mention "SWEATY ATTIC" when you call and we'll throw in a little discount. Just our way of saying thanks for being clever.