Fast, Reliable Spray Foam Insulation Across Austin
Spray foam insulation in Austin typically runs $2.50 to $6.80 per square foot installed, with most whole-attic jobs landing between $4,800 and $11,500 depending on foam type and house size. Our crews work every Austin neighborhood from Allendale to Zilker, and we’re at your door in 24 to 48 hours for estimates, often same-day for emergency garage and rim joist work. The heat doesn’t wait, and neither do your cooling bills. Call (325) 246-2929 and a live person answers, day or night.
Here’s the thing about Austin spray foam: the right foam in the right place cuts cooling costs dramatically, but the wrong foam or a rushed install creates moisture problems you won’t see until the damage is done. Our techs know the difference between what works in a 1930s East Austin bungalow and what’s appropriate for a 2015 tract home in Circle C. That local knowledge is why homeowners across Travis County call us first.
- Open-cell spray foam: $2.50 to $3.90 per sq ft. Great for sound dampening and attic air sealing.
- Closed-cell spray foam: $4.20 to $6.80 per sq ft. Adds structural strength and moisture resistance, ideal for crawlspaces and rim joists.
- Rim joist spray foam: $450 to $1,200 per typical Austin home. Solves the drafty-floor problem in pier-and-beam houses.
- Garage ceiling spray foam: $1,800 to $4,600. Keeps garage-adjacent rooms from turning into ovens in August.
Why Aspen Attic Insulation Austin Is Austin’s Preferred Spray Foam Insulation Company
Austin homeowners don’t hire an insulation crew on a handshake. They want to know who’s walking through the door, what they’ll pay, and what happens if the job isn’t right. That’s exactly what we put in writing before the first can of foam opens. Garrett Sloane leads the team, and every technician who shows up in Austin arrives with a photo ID badge, a clean marked uniform, and their name and photo texted or emailed to you before the visit. If someone else arrives, the visit is free and we make it right.
Founded in 2002, Aspen Attic Insulation is part of the Threshold Group family, and our Austin operation follows the Threshold Standard on every job. That means background-checked, identity-verified techs, written pricing delivered before work starts, and a 365-Day Done Right Promise in writing covering labor and materials. If a repair fails within a year, we return and fix it free. No fine print, no call-center runaround.
We serve the whole Austin metro from our Austin dispatch office, with crews in Round Rock, Cedar Park, Buda, and Elgin weekly. Call us at (325) 246-2929 and you’ll talk to a person who knows Austin zip codes, Austin building styles, and Austin’s brutal August attic temperatures, which regularly hit 150°F. We know what that heat does to insulation and we plan for it.
Garage Spray Foam Insulation in Austin
Garage Spray Foam Insulation in Austin is one of the most requested jobs we do, because most Austin garages weren’t built with insulation at all, and the rooms above them bake all summer. You’ll see it in older neighborhoods like Hyde Park and Brentwood, where a converted garage or a bonus room sits right over a hollow, uninsulated ceiling. We spray the garage ceiling cavity with open-cell or closed-cell foam, sealing the air leaks and cutting the heat transfer into the living space above.
What you pay in Austin runs roughly $1,800 to $4,600 for a typical two-car garage ceiling, depending on foam depth and access. A detached garage that just stores cars doesn’t need this treatment, but if your laundry room, bedroom, or office shares floor space above the garage, it’s one of the best dollar-for-dollar upgrades available here.
Attached Garage Ceilings With Living Space Above
When a bedroom sits over a garage in an Austin tract home, that room often runs 8 to 12 degrees hotter than the rest of the house in July. Spray foam on the garage ceiling stops the heat at the source. We air-seal around the door opener mounting points and any electrical boxes before foaming, because those are the gaps that let 150°F garage air pour through.
Detached Garages and Workshop Conversions
Some Austin homeowners convert detached garages into home gyms or workshops, and that’s where spray foam shines. We’ve worked off South Lamar and in Mueller, insulating garage walls and ceilings so a CrossFit setup doesn’t turn into a sauna. For these jobs we usually recommend open-cell foam for its sound dampening – it keeps the neighbors friendly too.
Closed Cell Spray Foam Insulation in Austin
Closed Cell Spray Foam Insulation in Austin is the go-to choice for crawlspaces, rim joists, and any area where moisture is a concern. Here’s the local truth: open-cell foam in a 150°F attic can soften and sag over time, losing R-value and air-sealing ability. Closed-cell doesn’t sag. It cures rigid, adds structural strength, and acts as a moisture barrier. In Austin’s East Austin pier-and-beam homes, closed-cell is often the only foam we recommend for floor cavities.
Pricing in Austin runs $4.20 to $6.80 per square foot for closed-cell. That’s higher than open-cell, but in a crawlspace with 75% humidity, the extra cost prevents mold growth on joists and stops rot before it starts. We install closed-cell from Demilec and Icynene, both of which hold up to Austin’s heat and humidity swings.
Crawlspace and Rim Joist Applications
Under an older Austin bungalow, the rim joist is the band of wood where the floor meets the foundation wall. If you can feel a draft through the baseboards in winter, or if your floors in the summer feel like they radiate heat, the rim joist is usually the problem. We seal every bay with closed-cell foam, which stops air movement and keeps crawlspace humidity from wicking into the floor system.
Roof Deck and Attic Applications
When we spray closed-cell on the underside of a roof deck in a hot Austin attic, we turn the attic into conditioned space. That means your AC ductwork, which often runs through the attic, no longer sits in 150°F air. Duct losses drop, and rooms cool faster. It’s a bigger investment, but for a David Weekley or Meritage home with ducts in the attic, it makes a real difference in August electric bills.
Trusted Brands We Service in Austin
We’re not tied to one manufacturer. Our Austin crews install spray foam from Demilec, Icynene, and several other premium brands, and we carry GreenFiber and Owens Corning products for the fiberglass and blown-in jobs that often accompany a spray foam retrofit. That matters in a city where housing stock runs from pier-and-beam bungalows to sheetrock-and-stucco production homes. If a job calls for closed-cell on a rim joist and open-cell in a party wall, we match the product to the problem. Call (325) 246-2929 and we’ll tell you exactly which material we’d use and why.
Common Spray Foam Insulation Problems We See in Austin Homes
- Open-cell foam sagging in hot attics: Austin attics hit 150°F in August, and we regularly see open-cell foam that has softened and delaminated from the roof deck. This cuts air-sealing performance and R-value, and the fix usually means removing and re-spraying with closed-cell.
- Foam trapping moisture in pier-and-beam crawlspaces: Under older homes near East Cesar Chavez and Holly, spray foam applied to crawlspace ceilings without addressing standing water or grading traps humidity against the joists. We see rot starting within two to three years in the worst cases.
- Unsealed attic bypasses in 1970s-90s tract homes: Homes built before 2000 in neighborhoods like Northwest Hills often have recessed lights, plumbing chases, and unsealed top plates. Foam installed over those gaps without air-sealing first leaves the attic still leaking, and the homeowner wonders why the energy bill didn’t drop.
- Undersized foam depth on garage ceilings: Some crews spray two inches of open-cell and call it done. In an Austin garage ceiling below a bedroom, that’s not enough to stop the heat. We spray to the full depth that the space allows and document every inch in writing.
Pricing for Spray Foam Insulation in Austin, TX
Here’s what we tell every Austin homeowner who calls: a typical garage ceiling spray foam job runs $1,800 to $4,600, rim joist sealing runs $450 to $1,200, and a full attic with closed-cell foam runs $8,500 to $11,500 depending on square footage. Open-cell attic work runs lower, usually $4,800 to $7,200. Your written price depends on the square footage, foam type, and how much air-sealing the house needs first. We give you that price in writing before any work starts, and it doesn’t change unless you add scope. No surprises, no post-job upcharges. Call (325) 246-2929 for a free estimate, and we’ll send a tech whose name and photo you already have.
We Also Serve Cities Near Austin
Our crews run regular routes to Cedar Park, Round Rock, Buda, and Elgin, and we know the housing stock in those towns as well as we know Austin itself. If you’re in a Leander highrise or a Buda farmhouse retrofit, the same written pricing and 365-Day Done Right Promise applies. See our Spray Foam Insulation main page for the full scope of what we do, or call (325) 246-2929 and ask for Garrett.
Serving Austin, TX - Our Local Coverage Area
We’re based in the Austin area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Spray Foam Insulation in Austin
Yes, in Austin’s 150°F attics and high-humidity crawlspaces, closed-cell spray foam is usually worth the extra cost. Closed-cell won’t sag in extreme heat, acts as a moisture barrier, and adds structural strength. Open-cell is fine for interior walls and some attic applications, but in pier-and-beam crawlspaces or on roof decks exposed to direct sun, we recommend closed-cell every time. The price difference in Austin runs about $1.70 to $2.90 more per square foot, but you avoid the sagging and moisture issues we see on open-cell jobs installed poorly. Call (325) 246-2929 and we’ll walk you through which foam fits your house.
No, you should not spray foam directly over fiberglass batts. The foam needs to adhere to the substrate, and fiberglass creates a poor bond that leads to delamination. In a 1980s Austin attic, we remove the old batts, air-seal the bypasses around recessed lights and top plates, then spray. Leaving the batts in place also hides air leaks we need to see and seal first.
Closed-cell spray foam is the best answer for an Austin pier-and-beam crawlspace, but only if moisture is handled first. We check for standing water, grading problems, and vapor barrier condition before we spray. Then we seal the rim joists and floor cavities with closed-cell. In homes off East Cesar Chavez, we’ve measured crawlspace humidity at 75%, and closed-cell stops that moisture from wicking into joists. Skip the moisture check and you’ll trap water against wood, which is how rot starts.
Yes, even in an unconditioned attached garage, spray foam on the ceiling cuts heat transfer into the rooms above and reduces the temperature inside the garage itself. In an Austin summer, an uninsulated attached garage can hit 110°F, and that heat radiates into the house through the shared wall and ceiling. Foam the ceiling and the wall that faces the house, and you’ll notice cooler rooms above the garage and a cooler space for laundry or tools. Typical cost in Austin: $1,800 to $4,600.
The difference is night and day. In an older East Austin pier-and-beam home, the problem is usually zero insulation in floor cavities plus high crawlspace humidity, so closed-cell on rim joists and floor systems is the fix. In a newer West Austin home with a big attic, the issue is often cheap batt insulation and duct leakage, so open-cell or closed-cell on the roof deck with air-sealing is the better play. If you’re not sure which describes your house, call (325) 246-2929 and we’ll tell you over the phone after a few questions.
If your attic feels like a furnace in July or your floors might as well be griddles, don’t wait through another Austin summer. Call (325) 246-2929 now for a free, written estimate. A live person answers, we send you the tech’s name and photo before the visit, and the price we give you is the price you pay. That’s the Aspen way, in writing, every time.
Written by Garrett Sloane, Owner at Aspen Attic Insulation Austin, serving the Austin metro area since the company’s founding in 2002.