Demilec Blown-In Insulation in Cedar Park: What to Know First
We provide independent Demilec blown-in insulation service in Cedar Park, typically completing attic top-ups and dense-pack wall jobs in one day with a written price delivered before any work starts. Most Demilec blown-in cellulose or fiberglass projects in a Cedar Park home this size run between $1,800 and $4,200 depending on attic square footage and whether air sealing is needed first. This page is for homeowners who already have Demilec insulation in their walls or attic and need a qualified crew that understands how this specific material behaves in Central Texas heat. Call (737) 245-6428 for a free estimate with upfront pricing.
How Demilec Products Fail - and How We Fix Them
- Demilec SEALECTION 500 open-cell spray foam shrinkage in Buttercup Creek attics. We’ve found this 0.5 lb density foam pulling away from top plates in homes built 2012-2018, creating thermal bypass channels that render any blown-in top-up ineffective until the gaps are cut out and resealed. We map the shrinkage with thermal imaging, remove the failed sections, and air-seal with compatible one-component foam before blowing new cellulose.
- Demilec HEATLOK Soya HFO closed-cell moisture trapping in Cedar Park’s humid shoulder seasons. When this 2.0 lb foam is applied too thick in a single pass, the exothermic reaction can lock in moisture that later degrades adjacent blown-in fiberglass. We probe suspect areas with a moisture meter, remove wet batts or loose fill, allow drying, then reinstall with proper vapor-profile sequencing.
- Demilec APX 500 blown-in cellulose settlement in 12:12 pitch attics near Brushy Creek. The steeper the roof, the more gravity works on this stabilized cellulose over five to seven years, leaving bare spots near ridge vents. We don’t just add more; we first inspect baffle integrity, then dense-pack the settled areas to original R-value rather than loose-filling on top.
- Demilec ECO-TOUGH fiberglass binder breakdown from sustained 140°F attic temperatures. In Cedar Park’s west-facing attics, the bio-based binder in this blown-in fiberglass can degrade, turning the material into loose, unmanageable dust. We remove the degraded product with HEPA-contained extraction and replace with fresh material, documenting the condition with photos for your record.
- Demilec air-barrier discontinuity at recessed can lights in Leander ISD-era builds. Many Cedar Park homes from the 2000s have Demilec spray foam at the roofline but unsealed IC-rated cans below, creating a chimney effect that pulls conditioned air through blown-in insulation on the attic floor. We seal with fire-rated covers and compatible caulk, then verify with blower-door subtraction testing.
Our Demilec Blown-In Insulation Process
- 1
Call and scheduling. A live person answers 24/7. We book a site visit in Cedar Park, usually within 48 hours. You receive a text when your technician is en route with a name and photo.
- 2
Pre-install infiltration test. We run a blower-door test - a pressurization reading that shows, in one number, how much conditioned air your building envelope is losing. Wes Okafor brought this discipline from Chicago’s building science program and won’t skip it. The ACH50 figure goes on your written scope.
- 3
Air sealing first, then insulation. Seal the leaks first. Then insulate. The order matters more than the product. We seal top plates, can lights, penetrations, and any Demilec foam discontinuities before a single bag of blown-in material enters the attic.
- 4
Material selection and installation. We match new Demilec blown-in cellulose or fiberglass to existing product specifications, or cross to compatible Johns Manville, Knauf, or GreenFiber if Demilec stock is backordered. No proprietary lock-in.
- 5
Post-test and documentation. We rerun the blower door and hand you the before-and-after readings, plus a Documented Photo Record of the completed work. Your written warranty and 365-Day Done Right Promise are already in your inbox.
- 6
Cleanup and walkthrough. We HEPA-vacuum the work path, leave the attic access better than we found it, and review your documentation with you on site or by text.
What Demilec Blown-In Insulation Costs in Cedar Park
| Job Type | Typical Range | What Moves the Price |
|---|---|---|
| Attic top-up (existing Demilec, 1,200-2,000 sq ft) | $1,800 - $2,800 | Depth needed, access difficulty, whether air sealing is required first |
| Dense-pack wall insulation (Demilec cellulose, per sq ft of wall) | $2.80 - $4.50 | Cavity condition, drill-and-fill vs. gut access, plaster vs. drywall |
| Full attic replacement (removal + new Demilec blown-in) | $3,200 - $5,500 | Volume of degraded material, HEPA extraction needed, baffle replacement |
| Air sealing + blown-in package | $2,800 - $4,200 | Blower-door starting number, number of penetrations, can light count |
These are real Cedar Park numbers based on jobs we’ve completed in neighborhoods from Buttercup Creek to Ranch at Brushy Creek. We don’t do “call for pricing” - Haven Standard Clause 1 requires a flat, written price before any work starts. Call (737) 245-6428 for your free estimate.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for Demilec Work
We’re an independent Demilec service provider - not affiliated with or authorized by the manufacturer - which means we source parts and materials based on what your specific job needs, not a factory-mandated kit. Our technicians are background-checked and uniformed, and they’ve handled Demilec shrinkage, binder breakdown, and settlement patterns across enough Cedar Park attics to recognize the difference between normal aging and actual failure. When Demilec product is unavailable, we draw from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, GreenFiber, and Reflectix without upcharge or delay. Every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door numbers you can verify yourself. The 365-Day Done Right Promise is in writing before anyone lifts a tool.
FAQs
No - Demilec’s product warranty covers manufacturing defects regardless of who installs or services it, though workmanship issues fall to the contractor who performed the work. We document our installation with photos and written scope so any future claim has clear evidence of proper handling. Call (737) 245-6428 if you need help interpreting your existing warranty language.
Yes - cellulose density is specified by weight per cubic foot and R-value per inch, not brand magic. We match Demilec’s 3.2-3.5 lbs/cu ft dense-pack spec with compatible third-party material when needed, and we verify installed density with a cavity probe during the job. Your written scope specifies exactly what density you’re getting.
Repair - meaning dense-packing settled areas back to original depth - typically runs 40-60% less than full removal and replacement, but only if the existing material is dry, uncontaminated, and the original binder is intact. We test a sample cavity before recommending either path. Call (737) 245-6428 and we’ll show you what we found in your attic.
Most attic top-ups and dense-pack wall jobs finish in one day; full removals with air sealing typically take two. We schedule within 48 hours of your call and don’t queue you behind out-of-town projects. A live person answers (737) 245-6428 24/7 to book your slot.
Yes - Haven Standard Clause 1 includes a Free Second Opinion on any written estimate. Bring us the competing scope and we’ll read it with you, line by line, and tell you where we agree and where we’d do something differently. No obligation to hire us. Call (737) 245-6428 to schedule.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.