Blown-In Insulation in Cedar Park - Same-Day Service, Done Right the First Time

Trusted Blown-In Insulation for Cedar Park Homeowners

Our Blown-In Insulation in Cedar Park typically costs $1,800-$4,500 for a complete attic installation and can be finished in a single day. Most homes in Cedar Park built between 1995 and 2015 were insulated to a lower R-value than today’s code requires, and the Hill Country’s temperature swings, summer heat, and occasional winter freezes make under-insulated attics expensive to condition.

Call (737) 245-6428

We’ve sealed and insulated over 9,000 homes since 2016, every one starting with a written price and ending with a documented record. In Cedar Park neighborhoods like Buttercup Creek, Ranch at Brushy Creek, and Anderson Mill West, we regularly find attics with original insulation settled below R-30, well short of the R-38 to R-60 the Department of Energy recommends for this climate zone. Our crews are background-checked and uniformed, and a live person answers calls at (737) 245-6428, 24 hours a day. Same-day estimates are available throughout Cedar Park and nearby areas, including Blown-In Insulation in Leander.

What Our Blown-In Insulation Service Includes

Blown-In Cellulose

Blown-in cellulose is ground paper fiber treated with borate fire retardant, dense-packed to fill irregular joist cavities and block air movement through the attic floor. In Cedar Park, we specify cellulose for homeowners who want a recycled-content material with strong resistance to the Hill Country’s occasional humidity spikes. We source cellulose from GreenFiber and other manufacturers, and we never blow it over an unsealed attic floor, our air sealing of top plates, can lights, and plumbing penetrations happens first. After installation, we run a blower-door test, a pressurization reading that shows, in one number, how much conditioned air your building envelope was losing before and after the work.

Blown-In Fiberglass

Blown-in fiberglass is spun glass fiber blown loose into attic spaces, lighter than cellulose and less prone to settling over decades of service. We recommend fiberglass for Cedar Park homes with complex rooflines or limited attic access where the lighter material distributes more evenly. We stock Owens Corning and Johns Manville fiberglass systems, and our crews are trained to maintain consistent depth across the entire attic plane, critical because thin spots become thermal bypasses. Every fiberglass job includes a documented photo record showing coverage depth and any air-sealing work completed beforehand.

Dense-Pack Wall Insulation

Dense-pack wall insulation is blown-in cellulose or fiberglass installed at high pressure into enclosed wall cavities, dense enough to resist air flow while filling around electrical boxes and framing irregularities. In Cedar Park’s older neighborhoods like Cluck Creek Estates and original Buttercup Creek, we use dense-pack to retrofit walls that were never insulated during construction, the 2×4 framing common in 1980s and 1990s builds limits cavity depth, so the density of the pack matters more than the R-value alone. We drill access holes strategically, blow to calculated density, then patch and texture-match the siding or drywall.

Blown-In Top-Up

Blown-in top-up is additional insulation added over existing material to restore or exceed original R-value after settling, compression, or partial removal. In Cedar Park, we perform top-ups most often after rodent damage, HVAC duct replacement, or when homeowners have stored heavy items in the attic that compressed the existing layer. We inspect the existing insulation for moisture damage or pest contamination first, if it’s compromised, we remove and replace rather than cover it. A top-up runs faster than a full installation, but we still seal accessible leaks before adding material, per our sealed-first protocol.

Brands We Service for Blown-In Insulation

We work with blown-in insulation systems from Owens Corning, Johns Manville, Knauf, and GreenFiber, among others. Owens Corning’s AttiCat system is a fiberglass product we’ve installed in hundreds of Cedar Park homes, the machine blows consistent, non-compressed density that holds its R-value over time. Johns Manville’s Climate Pro blown fiberglass is another system we stock regularly, particularly for attics with sensitive recessed lighting where the lower dust factor matters. We’ve also dense-packed with Knauf’s Jet Stream Ultra fiberglass in wall retrofit applications where the higher blow pressure helps fill around existing electrical and plumbing.

GreenFiber’s all-borate cellulose is our go-to for homeowners prioritizing recycled content, we’ve used it in Cedar Park’s LEED-targeted builds and standard retrofits alike. Whether you have a preference for one of these brands or need guidance selecting material for your specific attic conditions, we can help. We carry no proprietary product lock-in, the recommendation in your written scope is based on your home’s construction, your budget, and the performance data from our initial assessment.

Signs You Need Blown-In Insulation Right Now

• Your upstairs rooms are 8-12 degrees hotter than downstairs in July. This temperature stratification is common in Cedar Park homes with under-insulated attics, the roof deck radiates heat downward faster than the HVAC can compensate. We measure attic floor temperatures during summer assessments and regularly see 140°F surfaces above bedrooms that should read below 110°F with proper insulation and air sealing.
• Your energy bills spike every August and January. Austin Energy and Pedernales Electric Cooperative customers in Cedar Park often see 40-60% seasonal increases when attic performance is poor. The thermal load forces your HVAC to run longer cycles, and the compressor wear shows up in premature system failure, not just higher bills.
• You can see ceiling joists through your attic insulation. Original insulation in Cedar Park’s 1990s and 2000s subdivisions was often blown to R-30 or less, and fiberglass settles 10-20% over two decades. If joists are visible, you’re likely at R-20 or below, half of current recommendations for this climate.
• Your attic has been accessed for electrical, plumbing, or pest control work. Every footstep, cable pull, and trap placement compresses blown insulation and creates thin spots. We photograph these disturbed areas during assessments and include restoration in the written scope, not as an afterthought.
• Ice dams formed on your roof during the February 2021 freeze or subsequent winter events. Ice dams require heat loss through the roof deck, which in Cedar Park’s mild climate almost always means air leakage from conditioned space plus inadequate insulation. The water damage from backed-up meltwater costs more to repair than the insulation upgrade that prevents it.

Our Blown-In Insulation Process - Step by Step

1. 1
   Schedule your free estimate. Call (737) 245-6428 and a live person will answer, 24/7. We’ll confirm your address in Cedar Park or a surrounding community, ask about your home’s age and any known issues, and schedule an assessment, typically within 48 hours. You’ll receive a text confirmation with your technician’s name and a 2-hour arrival window.
2. 2
   Attic assessment and blower-door test. Your technician arrives uniformed and background-checked, with a ladder, lighting, and diagnostic equipment. We run a blower-door test, a pressurization reading that shows, in one number, how much air your building envelope is losing. We photograph existing insulation depth, identify air leaks at top plates, recessed cans, and penetrations, and check for moisture damage, pest activity, or compromised ductwork. This assessment takes 45-90 minutes.
3. 3
   Written scope and price delivered before any work starts. Within 24 hours, you receive a written proposal with your blower-door number, photos from the attic, a line-item scope of air sealing and insulation work, material specifications, and a flat price. Under Haven Standard Clause 1, no work begins without your signed approval of this document. We also offer a Free Second Opinion on any competing written estimate, bring us another contractor’s scope and we’ll review it with you.
4. 4
   Air sealing before insulation. On installation day, our crew seals all accessible leaks using caulk, foam, and gasketed covers for recessed lighting. This step is never skipped, never sold separately. We then run a mid-job blower-door test to verify the sealing result before any insulation is added, so the final number reflects the complete system performance.
5. 5
   Insulation installation, final test, and documented record. We blow insulation to the specified depth and density, using depth markers throughout the attic for verification. After cleanup, we run a final blower-door test and provide before-and-after numbers on applicable jobs. You receive a Documented Photo Record of the completed work, the written warranty, and our 365-Day Done Right Promise, if it’s not done right, we make it right.

How Much Does Blown-In Insulation Cost in Cedar Park?

Blown-In Insulation Near Cedar Park - Our Service Area

We install blown-in insulation throughout Cedar Park and respond to neighboring communities including Leander, Brushy Creek, Jollyville, Round Rock, Wells Branch, Lago Vista, Georgetown, Pflugerville, Lakeway, Austin, and Lost Creek. Most Cedar Park addresses receive same-day or next-day estimate availability. Jobs in Leander and Brushy Creek typically schedule within 48 hours. For homes in Lakeway or Lago Vista with lake-access restrictions, we coordinate timing to meet HOA or dock-access requirements. Wherever you’re located in the greater Austin area, the same Haven Standard applies, written price first, documented record last, blower-door numbers when applicable.

Frequently Asked Questions - Blown-In Insulation in Cedar Park

Schedule Your Blown-In Insulation Service in Cedar Park Today

Call (737) 245-6428 to speak with a live person, 24/7, and schedule your free estimate. We’ll assess your attic, run a blower-door test, and deliver a written price before any work starts. Every job includes air sealing first, documented photos, and our 365-Day Done Right Promise. No obligation, no voicemail loops, no callback windows measured in business days.

Written by Wes Okafor, Owner at Envelope Insulation Co., serving Cedar Park since 2016.