Attic insulation cost is the first question most Arlington homeowners ask after a summer electric bill tops $400. The answer depends on your attic, but the ranges are predictable. This guide covers typical DFW prices for 2026, a worked example for a 1,500 square foot attic, and when to remove the old material instead of topping it off.
In short
- Typical DFW market pricing runs about $1.00 to $2.00 per square foot for blown-in fiberglass or cellulose, and $3.00 to $7.00 for spray foam.
- Removing old or contaminated insulation adds roughly $1.00 to $2.00 per square foot.
- ENERGY STAR recommends R-38 to R-60 for our climate zone. Many older DFW attics sit at R-11 to R-19.
- Sealing and insulating can trim about 10 percent off total annual energy costs, with payback usually in 3 to 6 years here.
Why attic insulation cost matters more in North Texas
On a July afternoon in Arlington, the air inside an attic reaches 120 to 150 F. That heat pushes down through the ceiling all day, and your air conditioner runs longer to pull it back out.
Insulation is rated by R-value, a measure of resistance to heat flow. The U.S. Department of Energy and ENERGY STAR recommend R-38 to R-60 for attics in climate zone 3, which covers Dallas, Fort Worth, Arlington, Mansfield and Grand Prairie. That is roughly 10 to 16 inches of blown-in material. Many DFW homes built from the 1970s through the 1990s have R-11 to R-19, just 3 to 6 inches of settled gray fiberglass. If you can see the ceiling joists from the hatch, you are under-insulated.
What drives attic insulation cost
Six things move the number on your quote.
- Square footage. Insulation is priced per square foot of attic floor. A two-story home has about half the attic floor of a single-story home of the same size.
- Current depth. Going from R-19 to R-38 needs far less material than going from R-5 to R-49.
- Material. Blown-in fiberglass and cellulose are the standard choices for attic floors. Batts take more labor to fit around wiring. Spray foam on the roof deck costs 3 to 5 times more.
- Removal. Insulation with rodent droppings, mold, water damage or smoke odor should come out first. Removal is a separate line item.
- Air sealing. Sealing gaps around can lights, plumbing stacks and the attic hatch is cheap and makes the insulation work as rated. Leaky attic ductwork is a related problem that duct sealing fixes.
- Attic access. A small scuttle hole, a steep roof pitch, or equipment in the way adds labor time.
Attic insulation cost per square foot in DFW (2026)
These are typical Dallas-Fort Worth market ranges for 2026. They are not Texas Choice Heating And Air prices. Our quotes are given after a free attic inspection, because current depth and condition change the number more than anything else.
| Material or service | Typical DFW range (per sq ft) | Best use |
|---|---|---|
| Blown-in fiberglass | $1.00 to $1.80 | Topping off most attics |
| Blown-in cellulose | $1.20 to $2.00 | Denser, better sound control |
| Fiberglass batts | $1.50 to $2.50 | Open attics with even joist spacing |
| Spray foam (roof deck) | $3.00 to $7.00 | Attics with HVAC equipment and ducts |
| Removal of old insulation | $1.00 to $2.00 | Contaminated, wet, moldy or pest-damaged material |
Air sealing is usually a flat add-on of a few hundred dollars. Texas Choice installs blown-in fiberglass and cellulose and handles full attic clean-outs when the old material has to go.
Worked example: a 1,500 square foot attic in Arlington
Say your attic floor is 1,500 square feet and the existing fiberglass is clean but only about R-15. A top-off to R-38 with blown-in fiberglass at $1.00 to $1.80 per square foot lands between $1,500 and $2,700. Add air sealing and you are usually in the $1,800 to $3,200 range. If the old material must be removed first, add $1,500 to $3,000, which puts the whole project around $3,300 to $6,200.
What you get back: savings and payback
ENERGY STAR estimates that air sealing plus attic insulation saves about 10 percent of a home’s total annual energy costs, per its published methodology. For a DFW household spending $2,400 to $3,600 a year on electricity and gas, that is $240 to $360 a year. Against a $1,800 to $3,200 top-off, payback typically lands in 3 to 6 years, and the insulation keeps working for 20 years or more.
A cooler attic also means shorter AC run times, one of the cheapest ways to extend the life of your HVAC system. If you are already pricing a replacement, compare the insulation quote to our breakdown of new AC system cost in Texas.
Remove the old insulation or top it off?
Topping off is the right call when the existing material is dry, clean, odor-free and simply too shallow. Removal is the right call when you see any of the following:
- Rodent droppings, nests or tunnels through the material
- Black or green staining from mold, or a musty smell in the hallway below
- Water stains from a past roof leak or an AC drain pan overflow
- Smoke damage, or vermiculite in a home built before 1990
- Insulation compressed to 2 inches or less
Our post on what attic insulation removal involves walks through the process, and this checklist of signs your attic insulation needs replacement helps you decide before anyone climbs the ladder.
DIY vs. professional attic insulation cost
Big-box stores rent blowing machines, and material for a 1,500 square foot top-off runs about $600 to $1,100. That saves money if you can work in a 130 F attic with a respirator. Common DIY mistakes are uneven depth, blocked soffit vents and skipped air sealing. A pro crew finishes a 1,500 square foot attic in about 3 to 5 hours, seals first, installs depth rulers, and weatherstrips the hatch. Contaminated material should always be removed by a crew with a vacuum truck and proper disposal.
If the quote is bigger than this month’s budget, we offer financing through trusted lenders for insulation and HVAC work alike. Sealing the ducts that run through the attic on the same visit is often worth it.
Attic insulation cost FAQ
How much does attic insulation cost in Texas in 2026?
Typical DFW market pricing is about $1.00 to $2.00 per square foot for blown-in fiberglass or cellulose and $3.00 to $7.00 for spray foam. A 1,500 square foot top-off usually lands between $1,500 and $3,200 installed.
What R-value do I need in Arlington or Fort Worth?
DOE and ENERGY STAR guidance for climate zone 3 is R-38 to R-60, about 10 to 16 inches of blown-in insulation. Most older DFW homes have R-11 to R-19.
Can I add new insulation on top of old insulation?
Yes, as long as the old material is dry, clean and free of pests or mold. Contaminated insulation should be removed first, which typically adds $1.00 to $2.00 per square foot.
How long does attic insulation take to pay for itself?
With roughly 10 percent savings on total annual energy costs, a typical DFW top-off pays back in about 3 to 6 years.
Does Texas Choice Heating And Air charge for an attic inspection?
No. We measure current depth and condition and give you a written quote with no obligation.
Texas Choice Heating And Air has installed and removed attic insulation across Arlington, Pantego, Fort Worth, Mansfield, Grand Prairie, Rockwall and the rest of DFW since 2005. For a free attic inspection and a written quote, call (469) 213-7527 or request a quote online.
