Fast, Reliable Blown-In Insulation Across Cedar Park
Blown-in insulation in Cedar Park typically runs $1.80-$3.20 per square foot for attic top-ups and $2.50-$4.50 for full replacement with air sealing, with most jobs completed in one day. We’re dispatching crews to Cedar Park from our Austin office daily, and we know the specific insulation failures hiding in the master-planned communities built during the 2002-2012 boom. Call (737) 252-7159 for a written price before any work starts.
We’ve sealed and insulated more than 9,000 homes since 2016, and a significant share of them sit in Williamson County. The housing stock here is distinctive: tract homes in Avery Ranch, The Fairways at Crystal Falls, and similar subdivisions were built fast, to minimum IECC code for Climate Zone 3, with blown fiberglass attic floors that were never quite thick enough even when new. After 15-25 years of settling and compression, those attics are performing well below today’s R-49-plus benchmark. That gap shows up in July utility bills, in bonus rooms that won’t cool below 80°F, and in pipe chases that froze solid during Winter Storm Uri in February 2021.
Our Blown-In Insulation team treats every Cedar Park job as a building-envelope repair, not a commodity blow-in. We start with a blower-door test - a pressurization reading that shows, in one number, how much conditioned air your home is losing - and we air-seal every penetration before the insulation hose fires up. You get the before-and-after numbers in writing, plus a Documented Photo Record, before we leave.
Why Topside Attic Insulation Leander Is Cedar Park’s Preferred Blown-In Insulation Company
We’ve worked in Cedar Park long enough to recognize the specific failure patterns in local homes. The 2006 two-story off Avery Ranch Boulevard with the 8-10°F hot bonus room? We’ve been in dozens just like it. The Fairways at Crystal Falls ranch with original blown fiberglass compressed to R-20 and can lights pouring conditioned air into a 150°F attic? That’s a standard Tuesday for our crew. Our reviews from Cedar Park customers consistently mention two things: we show up when we say we will, and we leave documentation behind - not just a receipt, but photos, blower-door readings, and a written scope.
Response time to Cedar Park is typically same-day or next-day for estimates, with most installation work scheduled within a week. We don’t use callback windows measured in business days; a live person answers calls 24/7, and our technicians are background-checked, uniformed, and named in the text you receive when they’re on the way.
Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way. Wes Okafor built this protocol into the company from the start.
Our Blown-In Insulation Services in Cedar Park

Blown-In Cellulose
Cellulose works well in Cedar Park attics where we’re doing full replacement rather than top-up, especially when the original fiberglass is contaminated or when we’re dense-packing walls. We source GreenFiber cellulose, which is treated for fire resistance and pest deterrence. In Climate Zone 3, cellulose at R-49 requires roughly 14 inches settled depth, and it performs particularly well in the irregular framing cavities common in the 2000s-era truss designs found throughout Avery Ranch. We air-seal first, always. No exceptions.

Blown-In Fiberglass
Fiberglass is what most Cedar Park attics started with, and it’s often what we blow back in for top-ups - provided the existing layer is clean and the air sealing is complete. We stock Owens Corning and Johns Manville fiberglass systems, and we match the new material to the old when compatibility matters. A typical Cedar Park attic top-up with fiberglass runs $1.80-$2.80 per square foot, with full replacement and air sealing at $2.80-$4.20. The field vignette we keep returning to: that Avery Ranch two-story where we found six non-IC recessed cans acting as open chimneys. We sealed them with fire-rated covers, dammed the can wells, and blew Owens Corning fiberglass to bring the lid past R-49. The bonus room temperature split dropped to under 3°F.

Dense-Pack Wall Insulation
Cedar Park’s 2000s-2010s tract homes were built with fiberglass batts in walls, and those batts settle, compress, and leave gaps at electrical boxes and plumbing penetrations. Dense-pack cellulose or fiberglass, blown at 3.5 pounds per cubic foot or higher, fills those cavities completely and cuts air movement through the wall assembly. This matters in Climate Zone 3, where the temperature swing between a 100°F July afternoon and a 20°F January night stresses every gap in the envelope. We dense-pack from the interior or exterior depending on siding type and homeowner preference, and we always provide a written scope before cutting any access holes.

Blown-In Top-Up
This is our most common Cedar Park service, and it’s where the most money gets wasted when done wrong. A top-up over unsealed can lights, unsealed top plates, and leaking HVAC chases is just burying the problem in loose fill. We won’t do it. Our top-up protocol for Cedar Park: blower-door test, air-seal all penetrations, dam recessed cans, then blow to achieve R-49-plus total depth. Most Avery Ranch and Crystal Falls homes need 8-14 inches of additional material on top of the compressed original layer. Price range: $1.60-$2.60 per square foot for the top-up itself, with air sealing typically adding $0.80-$1.40 per square foot depending on can light count and chase complexity.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Cedar Park
We source materials from Owens Corning, Johns Manville, Knauf, and GreenFiber - no proprietary product lock-in, so we specify what performs best for your specific cavity and budget. For Cedar Park’s hot attic conditions, we typically specify high-temperature-stable fiberglass or borate-treated cellulose. We maintain local inventory for standard Cedar Park job profiles, which means no multi-week material delays for typical attic top-ups or replacements. If your home has an unusual existing material or you’re matching a specific product for warranty continuity, we can source it.
Common Blown-In Insulation Problems We See in Cedar Park Homes

- Settled original fiberglass below effective R-20. The blown fiberglass installed in Avery Ranch and Crystal Falls homes during the 2002-2012 build-out was typically blown to a nominal R-30 at best, and after two decades of compression it’s often performing at R-20 or lower - two full R-steps below current Climate Zone 3 code minimums.
- Non-IC recessed can lights acting as thermal chimneys. The open-concept floor plans popular in this era required abundant recessed lighting, and the cans installed were code-legal at the time but not insulation-contact or airtight-rated. Each one is a hole in your ceiling envelope, pulling conditioned air upward in summer and allowing 150°F attic air to radiate downward.
- Unsealed top plates and pipe chases. The framing transition between wall top plates and ceiling drywall was rarely sealed in 2000s tract construction, and pipe chases for plumbing vents and HVAC lines create direct air paths between conditioned space and attic. These leak in both directions, which is why Cedar Park attics swing from brutal summer heat to freeze vulnerability on the same pipe runs.
- Roof and HVAC penetrations with failed or missing sealant. Exhaust fan housings, flue penetrations, and flex-duct boots were often sealed with caulk that has dried and cracked after 15-20 years of 150°F-plus attic cycling. We photograph every penetration and show you the condition before we seal it.
Pricing for Blown-In Insulation in Cedar Park, TX
| Service | Typical Range (per sq ft) | Most Common Job Size |
|---|---|---|
| Blown-In Fiberglass Top-Up (attic) | $1.60 - $2.60 | 1,200 - 2,400 sq ft attic floor |
| Blown-In Fiberglass Full Replacement + Air Sealing | $2.80 - $4.20 | 1,200 - 2,400 sq ft attic floor |
| Blown-In Cellulose Full Replacement + Air Sealing | $3.00 - $4.50 | 1,200 - 2,400 sq ft attic floor |
| Dense-Pack Wall Insulation | $2.20 - $3.80 | Per wall cavity square footage |
| Air Sealing Only (before top-up) | $0.80 - $1.40 | Varies by can light count, chase complexity |
A typical 2,000-square-foot attic floor in Cedar Park runs $2,900-$5,800 for a complete top-up with air sealing, or $4,500-$8,400 for full removal, air sealing, and replacement to R-49-plus. The specific number depends on can light count, accessibility, and whether we’re working around stored belongings or a floored section. We provide a flat, written price before any work starts - Haven Standard Clause 1 - and we offer a Free Second Opinion on any competing written estimate. Call (737) 252-7159 for an exact quote; estimates are free.
We Also Serve Cities Near Cedar Park

Our crews work throughout Williamson County and north Travis County, including Cedar Park, Leander, Round Rock, Pflugerville, and Georgetown. Dispatch and scheduling are coordinated from our Austin office, with local crews serving each area daily.
Serving Cedar Park, TX - Our Local Coverage Area
We’re based in the Cedar Park 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 Cedar Park

We can, but only after we verify the existing layer is clean and we air-seal every penetration first. In 2004 Avery Ranch construction, the original blown fiberglass was almost certainly blown to less than R-30 nominal, and after 20 years it’s likely compressed to R-20 or lower. Burying that in new material without sealing the non-IC recessed cans and unsealed top plates leaves most of your energy savings on the table. We test with a blower-door, seal everything, then blow. Call (737) 252-7159 for a written price - estimates are free.
Measure the depth with a ruler at multiple points, avoiding the center of joist bays where insulation may have been disturbed. In Cedar Park’s Climate Zone 3, current code calls for R-49-plus in attics, which requires roughly 14 inches of settled fiberglass or 12-13 inches of cellulose. If you’re seeing 8-10 inches or less, you’re below code and likely well below effective performance. We document depth with photos during every estimate and show you exactly what we found. Call (737) 252-7159 to schedule.
Yes - they matter enormously. The can lights installed in 2000s-2010s Crystal Falls homes were not IC/AT-rated, meaning insulation cannot safely contact them and they leak air continuously. Each one is essentially a 6-inch hole in your ceiling envelope. We seal them with fire-rated covers, dam the surrounding well to maintain insulation depth, and only then blow new material. Skipping this step is why many “insulated” Cedar Park attics still perform poorly. We include can sealing in our written scope when it’s needed.
For most Cedar Park top-ups over clean existing fiberglass, we specify fiberglass for material compatibility and cost efficiency - typically Owens Corning or Johns Manville systems at $1.80-$2.80 per square foot installed. Cellulose makes more sense when we’re doing full replacement, when the existing material is contaminated, or when we’re dense-packing walls. Both materials perform to R-49-plus when installed at proper depth with air sealing complete. We’ll recommend the specific material in your written price after seeing the attic. Call (737) 252-7159 for that assessment.
It helps, but only if air sealing is part of the work. The pipe freezes during Uri happened where attic air reached the plumbing chases - and in Cedar Park’s 2000s tract homes, those chases are rarely sealed at the top plate. Adding insulation without sealing the air leaks just gives the cold air a thicker blanket to push through. Our protocol seals chases, top plates, and penetrations first, then blows to R-49-plus. The 365-Day Done Right Promise covers all completed work. Call (737) 252-7159 for a written price before any work starts.
Ready to fix your Cedar Park attic? Call (737) 252-7159 for a free estimate with a written price before any work starts. We answer live, 24/7.
Written by Wes Okafor, Owner at Topside Attic Insulation Leander, serving Cedar Park since 2016.