Demilec Insulation Removal & Replacement in Cedar Park: What to Know First
We provide independent Demilec insulation removal & replacement in Cedar Park, with most jobs completed in one to two days and pricing set in writing before any work starts. Most Demilec removal and replacement projects in Cedar Park run between $2,800 and $6,500 depending on product line, contamination level, and whether the attic floor has been air-sealed. We are not affiliated with or authorized by Demilec; we are an independent service provider with hands-on experience across their full product range.
This page is for Cedar Park homeowners who have Demilec open-cell or closed-cell spray foam, Demilec SEALECTION 500, or Heatlok HFO High Lift in their attic or walls and need it removed due to failure, contamination, or remodeling. If you’re seeing odors, shrinkage, or moisture issues behind your Demilec, call (737) 245-6428. We’ll read your situation with you and give you a written price before any work starts.
How Demilec Products Fail - and How We Fix Them
- SEALECTION 500 shrinkage and pull-back from top plates. We’ve found this open-cell product in dozens of Cedar Park homes built between 2012 and 2019, especially in Ranch at Brushy Creek and Anderson Mill West. The foam shrinks 2-5% over time in our 100°F+ attic summers, pulling away from framing and creating convection loops that bypass the insulation entirely. We remove the compromised foam mechanically, seal the gaps with compatible sealant, and replace with a product matched to the cavity depth and your budget.
- Heatlok HFO High Lift off-gassing and odor retention. This closed-cell line uses hydrofluoroolefin blowing agents that can trap amine catalyst odors if the mix ratio was off during original install - a problem we see in faster-built subdivisions like Buttercup Creek where crews raced production schedules. The smell lingers because closed-cell foam is vapor-closed; there’s nowhere for the VOCs to go. Full removal is the only fix, followed by active ventilation during cure time of the replacement material.
- Demilec open-cell moisture absorption in vented attics. Open-cell foam is vapor-permeable, which works fine in conditioned spaces but becomes a liability in Cedar Park’s vented, 140°F attics where humid outdoor air meets cooled interior drywall. We’ve pulled saturated Demilec open-cell from Twin Creeks homes where the R-value had dropped to that of damp cardboard. We remove it, verify the roof deck isn’t compromised, and specify closed-cell or a hybrid system with proper air sealing.
- Demilec closed-cell thermal drift from UV exposure. When installed in knee walls or bonus room applications without proper ignition barrier coverage, the surface of Heatlok or Demilec 200 dembrowns and loses thermal performance. The outer 1/2 inch becomes a crust that conducts heat. We strip the damaged layer, assess structural moisture, and reapply with correct ignition barrier per IRC 316.5 - documentation included.
- Rodent and pest infiltration in Demilec-perimeter homes. Demilec’s tight seal can mask entry points elsewhere; when mice find a gap at the soffit, they nest against the foam and contaminate it with urine that standard cleaning won’t touch. We’ve replaced Demilec in Cedar Park homes near Brushy Creek where the foam itself was structurally sound but biologically compromised. Full removal, HEPA cleanup, and rodent proofing before any new insulation goes in.
Our Demilec Insulation Removal & Replacement Process
- 1
Pre-work blower-door test and infiltration measurement. We pressurize the house and measure ACH50 - the air changes per hour at 50 Pascals pressure - so you know exactly how leaky the envelope is before we touch anything. This number goes on your written scope.
- 2
Containment and mechanical removal. For Demilec closed-cell, we use cold-knife cutting and controlled fracturing; for open-cell, we use specialized scraping tools that minimize substrate damage. HEPA-negative air machines run continuously. We don’t blast foam loose with pressure washers - that drives moisture into studs and voids your replacement warranty.
- 3
Substrate inspection and remediation. Once the Demilec is out, we check sheathing, top plates, and can light housings for moisture damage or rodent activity. Anything compromised gets documented with photos and addressed before the next step.
- 4
Air sealing before insulation. Seal the leaks first. Then insulate. The order matters more than the product. We seal top plates, electrical penetrations, and chimney chases with fire-rated caulk and foam. Then we run the blower-door again so you see the improvement in actual CFM50.
- 5
Replacement material selection and install. We match the product to your goals - not our inventory. Options include new Demilec (if you prefer), Owens Corning fiberglass, Johns Manville mineral wool, or Rockwool batts. Every material is sourced from our named suppliers; no proprietary lock-in.
- 6
Final blower-door test, photo documentation, and written closeout. You get the second set of numbers, the photo record, and the 365-Day Done Right Promise in writing. Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool.
What Demilec Insulation Removal & Replacement Costs in Cedar Park
These are real ranges from jobs we’ve run in Cedar Park, Leander, and Round Rock. Your written price will land inside these brackets once we see the space.
| Scenario | Typical Range |
|---|---|
| Partial Demilec removal (contaminated section, under 300 sq ft) | $2,800 - $4,200 |
| Full attic Demilec removal, open-cell, vented attic | $4,500 - $6,500 |
| Full attic Demilec removal, closed-cell, with substrate repair | $5,200 - $7,800 |
| Wall cavity Demilec removal (per 1,000 sq ft of wall) | $3,500 - $5,500 |
| Air sealing + replacement with fiberglass or mineral wool | Add $1,200 - $2,400 |
What moves the price: accessibility (cathedral ceilings cost more), contamination level (rodent-soaked foam requires hazmat-level cleanup), and whether the original Demilec was applied over knob-and-tube wiring or other surprises. We don’t find those surprises and then renegotiate - we build contingency into the written price upfront.
Bring us any competing written estimate for a free second opinion. We’ll read it with you line by line. Call (737) 245-6428 for your written price - estimates are free.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for Demilec Work
We’ve removed Demilec from attics in Buttercup Creek where the original installer is long gone, from Ranch at Brushy Creek where the HOA required photo documentation of every step, and from Twin Creeks homes where the owner wanted the blower-door numbers to show their energy auditor. Wes Okafor runs every job with the same discipline he learned at Olive-Harvey College: measure first, fix the leaks, measure again, then write it down.
Our 365-Day Done Right Promise covers the removal, the replacement, and the air sealing. If you also have Reflectix radiant barrier that needs assessment, we handle that too - no need to coordinate two trades. Calls are answered by a live person 24/7, and your technician is background-checked, uniformed, and named on your written scope before they arrive.
FAQs
Does removing Demilec void my warranty?
The original Demilec material warranty was between you and your installer, and most expire with the original contractor’s workmanship guarantee. As an independent Demilec service provider, we don’t extend or honor manufacturer warranties, but our 365-Day Done Right Promise covers our removal and replacement work in writing. Call (737) 245-6428 and we’ll review what documentation you have.
Can you match my existing Demilec product, or do I have to switch brands?
We can source new Demilec through our supplier network if you prefer product continuity, though many Cedar Park homeowners switch to fiberglass or mineral wool after removal due to cost and breathability. We don’t push either direction - we price both and let the written numbers decide. Free estimates include both options.
How do I know if my Demilec needs removal or just repair?
Surface defects smaller than a softball in closed-cell Demilec can sometimes be cut out and patched if the substrate is dry. Open-cell Demilec that’s shrunk, yellowed, or odor-active almost always needs full removal - the failure mode is systemic, not localized. We’ll tell you which category you’re in during the free estimate, not after we’ve started billing.
How soon can you start a Demilec removal in Cedar Park?
Most Demilec removals in Cedar Park are scheduled within 3-5 business days of estimate approval. Contaminated jobs with active rodent issues get priority. Same-week starts happen when the attic is accessible and no asbestos-containing vermiculite is present underneath. Call (737) 245-6428 to check current scheduling.
What do I get to keep when the job is done?
You get a written scope with before-and-after blower-door numbers, a Documented Photo Record of removal and replacement, and the 365-Day Done Right Promise in writing. These are delivered by email before the crew leaves your driveway. Haven Standard: Have it in writing.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.