Fast, Reliable Blown-In Insulation Across Austin
Blown-in insulation in Austin typically costs $1.80 to $3.40 per square foot installed, with most whole-attic jobs running $2,400-$5,800 depending on accessibility and whether air sealing is needed first. Our crews dispatch from our Austin office and usually reach Hyde Park, Cherrywood, or Brentwood within 45 minutes, Pflugerville or Cedar Park within an hour. We answer calls live at (737) 259-7528, 24/7.
Austin’s housing stock doesn’t forgive shortcuts. The pier-and-beam bungalows packed into Central Austin neighborhoods were built for ventilation, not thermal control, and the garage-conversion ADUs added under the city’s aggressive infill ordinance often have 2×4 walls too shallow for code R-value. We don’t blow insulation over problems. We seal first, document everything, and publish blower-door numbers so you see what you paid for.
Why Topside Attic Insulation Round Rock Is Austin’s Preferred Blown-In Insulation Company
We’ve sealed and insulated over 9,000 homes since 2016, and a growing share of that work is in Austin’s 78751, 78756, and 78702 ZIPs where homeowners research contractors harder than they research cars. Our reviews from Austin customers consistently cite two things: the written price that arrived before any work started, and the photo record and blower-door report they received when the crew left. No voicemail loops. No callback windows measured in business days. A live person answers at (737) 259-7528.
Our Austin crews know the local conditions. We understand how alley-load access on tight Central Austin lots affects material handling, how pier-and-beam crawl spaces in Hyde Park vent humid subfloor air straight into insulation, and how Austin Energy’s Green Building program changes the math on every blown-in job. That municipal rebate structure doesn’t exist in Dallas or Houston. We navigate it daily.
Under Haven Standard Clause 1, every job begins with a flat written price, a written scope, and a written warranty before anyone lifts a tool. The 365-Day Done Right Promise applies to all completed work. If it’s not done right, we make it right.
Our Blown-In Insulation Services in Austin
Blown-In Cellulose
We install GreenFiber cellulose in Austin attics and wall cavities at settled densities that resist settling and airflow. Cellulose performs well in Austin’s climate because it handles the humidity swings better than fiberglass when properly installed, and its higher density reduces air movement through the cavity. In pier-and-beam bungalows around Cherrywood and Travis Heights, we dense-pack cellulose into open wall cavities after sealing the top plates and penetrations. Most Austin attic jobs with cellulose run $2,600-$4,200 for a typical 1,600-square-foot footprint.
Blown-In Fiberglass
We blow Owens Corning fiberglass over sealed attic floors in Austin homes where the existing insulation is compromised or insufficient. Fiberglass doesn’t absorb moisture the way cellulose can, which matters in Austin’s spring humidity spikes when vented attics pull moist air through ceiling penetrations. We never blow over unsealed top plates or open chases. The attic floor gets sealed first, then insulated, then verified with a blower-door test. Fiberglass top-ups in Austin typically run $2,400-$3,800.
Dense-Pack Wall Insulation
Dense-pack is our solution for Austin’s 1940s-1970s bungalows with empty or minimal wall cavities. We drill access holes, pack cellulose to 3.5-4.0 pounds per cubic foot, and seal the holes with matching siding or interior patch. This density creates an air-impermeable barrier that slows both heat gain and air leakage. In Hyde Park and Brentwood, we’ve dense-packed dozens of pier-and-beam homes where the original walls had nothing but lathe and plaster. Dense-pack wall jobs in Austin range $3,200-$5,800 depending on wall area and exterior type.
Blown-In Top-Up
Top-up jobs dominate our Austin call volume, especially after homeowners receive their first $400+ summer cooling bill. But Austin Energy’s Green Building program ties insulation rebates to a blower-door-verified air-leakage threshold above the state code. A blown-in top-up in Austin without air sealing won’t qualify for rebates at all. We assess the existing insulation depth, identify compression and moisture damage, seal all ceiling penetrations and top plates, then blow to the R-value that hits the Green Building tier you want. Top-ups with air sealing in Austin run $2,800-$5,200.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Austin
We source materials from Owens Corning, Knauf, Rockwool, CertainTeed, and GreenFiber, among others. No proprietary lock-in means we spec what’s right for your Austin home’s specific conditions, not what a manufacturer requires us to move. Our Austin warehouse stocks cellulose and fiberglass for same-day deployment on most jobs, and we carry the dense-pack hoses and specialized nozzles needed for tight Central Austin crawl spaces and alley-access jobs. If your project calls for Rockwool mineral wool in a fire-rated ADU separation wall, or Knauf fiberglass in a vented attic with humidity concerns, we install it to the same documented standard.
Common Blown-In Insulation Problems We See in Austin Homes
- Blowing loose fill over unsealed top plates in Hyde Park and Cherrywood bungalows. Stack-effect leakage pulls conditioned air straight through the insulation, undoing the added R-value before the Austin Energy rebate inspector arrives. We see this on competitor jobs regularly. The fix is always the same: pull back the new fill, seal the plates and chases, re-blow, and re-test.
- Top-up jobs in garage-conversion ADUs with shallow 2×4 cavities. Austin’s Green Building tier requires specific R-values that 3.5-inch cavities can’t hit with standard blown-in density. We solve this with dense-pack cellulose at higher installed weight, or by furring out the cavity when structurally feasible. Either way, we tell you before we start, in writing.
- Skipping the pre-blow air-seal pass in pier-and-beam crawl spaces. Cross-vented subfloor gaps let humid Austin air loft cellulose and accelerate winter heat loss. After Uri, we no longer treat Austin crawl spaces as afterthoughts. Every pier-and-beam job gets a sealed subfloor or encapsulated crawl space before insulation touches the cavity.
- Undersized R-value specs for solar heat gain conditions. Austin attics hit 150°F+ in July and August. A spec that works in Dallas won’t cut it here. We size for peak attic temperature, not average outdoor temperature, and we document the design assumption in your written scope.
Pricing for Blown-In Insulation in Austin, TX
Most blown-in attic jobs in Austin run $2,400-$5,800 depending on four factors: square footage, existing insulation condition, accessibility (tight Central Austin lots with alley parking add time), and whether air sealing is required to hit Austin Energy Green Building rebate tiers. Dense-pack wall insulation runs $3,200-$5,800. Blown-in top-ups with air sealing run $2,800-$5,200.
| Service | Typical Austin Range |
|---|---|
| Blown-in cellulose attic (air seal + blow) | $2,600-$4,200 |
| Blown-in fiberglass attic (air seal + blow) | $2,400-$3,800 |
| Dense-pack wall insulation | $3,200-$5,800 |
| Blown-in top-up with air sealing | $2,800-$5,200 |
Every price is flat and written before work starts, per Haven Standard Clause 1. We also provide a Free Second Opinion on any written estimate from another contractor. Call (737) 259-7528 for a written quote - estimates are free, and you’ll know exactly what you’re paying before anyone arrives.
We Also Serve Cities Near Austin
Our crews work throughout the Austin metro, including Austin proper plus Pflugerville, Cedar Park, Manor, and Round Rock. Dispatch and scheduling are coordinated from our Austin office. The same written-price standard, same documented photo record, and same blower-door verification apply whether we’re working on a Brentwood bungalow or a Cedar Park subdivision.
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 - Blown-In Insulation in Austin
No. Austin Energy’s Green Building program requires blower-door-verified air leakage below a specific threshold to qualify for insulation rebates at any tier. A blown-in top-up without air sealing will not pass verification. We seal top plates, can lights, chimney chases, and all ceiling penetrations before blowing any insulation, then test and document the before-and-after CFM50 reading for your rebate submission. Call (737) 259-7528 and we’ll walk through the rebate path with you - estimates are free.
Yes, if the crawl space is sealed or encapsulated first. Cellulose performs well in cold conditions when it’s protected from wind-washing and moisture intrusion. The Uri failures we saw in Hyde Park and Cherrywood happened where unsealed crawl spaces let cold air penetrate the floor assembly and where attic insulation was blown over unsealed penetrations, allowing stack-effect heat loss. We don’t install cellulose in vented, unsealed crawl spaces anymore. Call (737) 259-7528 for a written assessment of your specific assembly.
Sometimes, but it requires dense-pack cellulose at higher installed density than standard blowing, or structural modification to deepen the cavity. Standard loose-fill in a 3.5-inch cavity won’t hit the R-value Austin Energy’s Green Building tier requires. We measure your cavity depth, calculate the achievable R-value at dense-pack density, and give you a written price for both the insulation and any necessary furring before we start. Call (737) 259-7528 for a written evaluation.
We need attic access, but we’ve worked around Austin’s access constraints for years. Our hose trucks fit most alley widths in Hyde Park and Brentwood, and we carry 200-foot hose reels for jobs where parking is street-only. For walk-up attic hatches in converted garages or ADUs, we use compact blowing machines that fit through standard doorways. We text when the technician is en route so you can coordinate access. Call (737) 259-7528 to discuss your specific site - we’ve likely solved it before.
Austin’s unvented attics without radiant barriers or spray foam exceed 150°F in peak summer, which increases the temperature differential across your ceiling assembly by 80°F or more compared to a milder climate. We spec higher R-values than national charts suggest because those charts don’t account for extreme attic temperatures. We also evaluate whether a radiant barrier or spray foam transition makes more sense than blown-in alone. The written scope you receive before work starts includes our design assumptions and expected performance. Call (737) 259-7528 for a written analysis of your attic.
Ready to get a written price before any work starts? Call (737) 259-7528 now. Our Blown-In Insulation team serves Austin with documented results, live-answer scheduling, and the Haven Standard: flat price, written scope, written warranty, every time.
Written by Wes Okafor, Owner at Topside Attic Insulation Round Rock, serving Austin since 2016.