Demilec Wall Insulation in Cedar Park: What to Know First
We provide independent Demilec wall insulation service in Cedar Park, typically turning around standard injection foam and drill-and-fill jobs within one to three business days. Most Demilec wall insulation projects in a Cedar Park home this size run between $2,400 and $5,800, and we deliver a written price before any work starts. This page is for homeowners who already have Demilec product in their walls and need to know whether it’s failing, what fixing it actually involves, and what they’ll walk away with. Call (737) 245-6428 for a free estimate or to schedule a pre-install infiltration test.
How Demilec Products Fail - and How We Fix Them
- Demilec Heatlok Soya HFO shrinkage in Cedar Park’s thermal cycling. The HFO-blown closed-cell foam can pull 3-5% from wall studs after three to five years of Central Texas heat spikes, leaving thermal bypass channels we find with infrared during our pre-install survey. We remove the compromised lift and reapply at the corrected yield thickness, documenting the before-and-after R-value with a thermal camera report.
- Demilec Sealection 500 density loss in retrofit cavities. This open-cell water-blown foam can slump in irregular stud bays common in 1990s Cedar Park builds, particularly in the Ranch at Brushy Creek and Buttercup Creek subdivisions where wall cavities weren’t always uniform. We spot these voids with borescope inspection, then inject a compatible fill to restore the original design density.
- Demilec Heatlok XT moisture trapping at the exterior sheathing. When the vapor retarder properties shift with age, seasonal humidity in Cedar Park can accumulate at the OSB layer. We pull affected sections, allow the sheathing to dry to 15% moisture content verified with pin meter, then reinstall with corrected vapor profile.
- Demilec Agribalance off-ratio curing from original install errors. The 2.0 lb density closed-cell product demands precise A:B mix temperature; installers working too fast in summer heat can create tacky, underperforming foam that never reaches full compressive strength. We cut out the failed material and reapply with temperature-controlled rigs, logging drum temps in the job record.
- Demilec open-cell dusting and surface degradation. In wall cavities where Sealection 500 was left exposed to attic air exchange, UV and oxidation can frizzle the surface into respirable particles. We encapsulate or remove depending on depth of degradation, with air sampling documentation if occupants reported irritation.
Our Demilec Wall Insulation Process
- 1
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 - before touching any wall. You get the ACH50 figure in writing.
- 2
Borescope and thermal survey. We inspect suspected failure cavities with a borescope camera and FLIR imaging, marking exactly where Demilec product has failed and why.
- 3
Written scope and price. Under Haven Standard Clause 1, you receive a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions.
- 4
Air sealing first, then insulation. We seal top plates, electrical penetrations, and any bypasses we find. Seal the leaks first. Then insulate. The order matters more than the product.
- 5
Demilec-compatible reinstall or injection. We select OEM or quality aftermarket fill based on the original product chemistry and your wall assembly’s vapor management needs. We do not lock you into proprietary product lines.
- 6
Post-work verification. We run a second blower-door test, deliver the before-and-after comparison, and add the Documented Photo Record to your file. The 365-Day Done Right Promise begins when we leave.
What Demilec Wall Insulation Costs in Cedar Park
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| Drill-and-fill injection foam, single-story, 1,800 sq ft | $2,400 - $3,600 | Cavity depth, stud spacing, access to exterior walls |
| Two-story with Demilec removal and replacement | $4,200 - $5,800 | Amount of failed foam to extract, sheathing condition, interior finish repair |
| Interior wall soundproofing with Demilec-compatible open-cell | $3,100 - $4,500 | Wall count, electrical box sealing, STC rating target |
| Spot repair, 2-3 failed cavities | $680 - $1,200 | Location (second story exterior adds ladder work), cavity accessibility |
Prices include the blower-door test, written scope, and Documented Photo Record. We also offer a Free Second Opinion on any written estimate you’ve already received - bring us a competing quote and we’ll read it with you. Call (737) 245-6428 for your exact written price.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for Demilec Work
We’ve sealed and insulated over 9,000 homes since 2016, and the ones in Cedar Park keep us honest about heat. Wes Okafor, our owner, spent years running jobs across this market, including retrofits in Buttercup Creek where attics routinely read 140°F before his crew touches them. That thermal stress is hard on Demilec product installed during the 2012-2018 building boom. We publish before-and-after blower-door numbers on every applicable job so you can verify the air-sealing result you paid for. Our technicians are background-checked and uniformed, and a live person answers calls 24/7. We also work with Reflectix and other brands when a wall assembly calls for a hybrid approach rather than single-product replacement. The 365-Day Done Right Promise applies to all completed work.
FAQs
Demilec’s material warranty covers product defects, not installation workmanship, and using an independent service provider does not void the material coverage itself. We document our install conditions and product batch numbers so any legitimate material claim can still be filed. If you’re unsure about your remaining coverage, we’ll review your original install paperwork with you during the free estimate. Call (737) 245-6428 to schedule.
We can source OEM Demilec product when the chemistry matches your wall assembly’s needs, though we also carry compatible fills from Icynene, Johns Manville, and other manufacturers we name in our materials list. We recommend based on performance, not brand lock-in, and we explain the trade-offs in writing before you decide. Call (737) 245-6428 for a written scope with your options.
Spot repair is usually cheaper when fewer than 20% of cavities are compromised; once failure is widespread, full removal and replacement becomes more cost-effective than chasing individual voids. We determine this during the borescope survey and tell you which path costs less before quoting either. Call (737) 245-6428 for the assessment.
Most standard jobs are scheduled within one to three business days; complex removals requiring interior finish repair may take five to seven days to stage. We do not manufacture urgency, and we do not start work without a written price. Call (737) 245-6428 to check current availability.
You receive a written scope completion checklist, the before-and-after blower-door readings if applicable, a thermal or borescope photo record of treated cavities, and the 365-Day Done Right Promise warranty document. This is standard on every job, not available on request. Call (737) 245-6428 if you want to see a sample report before booking.
Ready to know what’s actually happening inside your walls? Call (737) 245-6428 for a free estimate with written pricing, or text us to schedule your pre-install infiltration test. We’ll run the blower-door test, show you the numbers, and give you a flat price before any work starts.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.