Demilec Insulation Removal & Replacement in Glendale: What to Know First
We provide independent Demilec insulation removal and replacement in Glendale, typically completing residential jobs in one to two days with a written price delivered before any work starts. Most Demilec removal and replacement projects in Glendale homes run between $2,800 and $6,500 depending on attic size, contamination level, and whether the existing foam needs full extraction or targeted remediation. Call (213) 474-3828 for a free estimate with a written scope and warranty included.
This page is for Glendale homeowners who have Demilec spray foam insulation in their attic, walls, or crawl space and need it removed due to failure, contamination, or remodeling. We’re an independent Demilec service provider - not affiliated with or authorized by Demilec - and we work on every major brand including Reflectix.
How Demilec Products Fail - and How We Fix Them
- Demilec Heatlok HFO High Lift shrinkage in cathedral ceilings. The HFO blowing agent can produce lift inconsistencies in unvented roof assemblies common in Glendale’s 1960s-1980s ranch remodels. We see 10-15% shrinkage gaps after 7-10 years, especially where rafter bays exceed 14 inches. Our fix: full removal with cold-cutting, then replacement with a compatible open-cell system after blower-door-directed air sealing of the ridge beam and soffit junctions.
- Demilec Sealection 500 off-gassing in conditioned attics with inadequate ventilation. Older Sealection batches in tight Glendale attics - particularly south of the 134 where summer roof deck temperatures exceed 160°F - can emit trace amines. We remove the affected foam, ventilate the cavity to ASTM D7144 standards, and reinstall only after moisture content readings drop below 19%.
- Demilec Heatlok XT moisture trapping in balloon-frame walls. The higher closed-cell density (2.0-2.2 lbs/ft³) blocks vapor drive inward during Glendale’s occasional winter rain events, but can trap construction moisture in walls without proper drying time. We extract the foam with controlled abrasion, install a smart vapor retarder, and replace with a moisture-managed assembly - usually dense-pack cellulose in Verdugo Woodlands-era homes where Wes Okafor’s crew has handled dozens of these.
- Demilec Eco-Pur contact delamination from dusty OSB roof sheathing. Eco-Pur’s adhesive chemistry fails where sheathing was installed during Glendale’s dry Santa Ana periods and never properly cleaned. We scrape to substrate, apply a primer-compatible replacement foam, and document the adhesion test per ASTM D1623.
- Demilec AgriThix in agricultural-adjacent properties attracting rodents. The bio-based content in AgriThix - still present in some Glendale outbuildings and converted structures near the Los Angeles River corridor - can retain food-source odors. We remove contaminated sections, sanitize with enzyme treatment, and replace with a synthetic alternative after rodent-proofing with 1/4-inch hardware cloth at all penetrations.
Our Demilec Insulation Removal & Replacement Process
- 1
Call and scope. A live person answers 24/7. We schedule a site visit, and you’ll get a text when your technician is en route - Haven Standard: Arrive on schedule, named technician.
- 2
Blower-door test and attic inspection. We pressurize the house to measure CFM50 before touching anything. In Glendale’s older homes near Adams Hill, we regularly find 3,500+ CFM50 with the attic contributing 40% of total leakage. You get the number in writing.
- 3
Written price before any work starts. Flat price, written scope, written warranty. No exceptions. This is Haven Standard Clause 1.
- 4
Controlled removal. Demilec foam comes out with cold-cutting or abrasive extraction depending on the substrate - never torch removal that damages rafters or wiring. We bag to RCRA standards if contamination is present.
- 5
Air seal, then insulate. Top plates, can lights, penetrations - sealed first. “Seal the bypasses first. Insulation over air leaks is just expensive noise reduction.” Then we install your replacement insulation with documented R-value and depth.
- 6
Post-work blower-door test and photo record. You get printed pre- and post-installation ACH50 numbers side by side, plus a Documented Photo Record of every stage. The 365-Day Done Right Promise applies from this moment.
Before
AfterWhat Demilec Insulation Removal & Replacement Costs in Glendale
Most Demilec insulation removal and replacement jobs in Glendale fall in these ranges:
| Partial removal (contaminated section, under 300 sq ft) | $2,800 - $4,200 |
| Full attic removal and replacement with blown-in fiberglass | $4,500 - $6,500 |
| Full attic removal and replacement with spray foam | $5,800 - $9,200 |
| Wall cavity extraction (per 1,000 sq ft of wall) | $3,200 - $5,000 |
| Vermiculite or asbestos-contaminated Demilec removal | Add $1,800 - $3,500 for abatement |
What moves the price: roof pitch over 8/12 (slower removal), multiple foam layers from previous contractors, electrical rewiring needed during exposure, and whether the substrate requires repair after extraction. We bring a Free Second Opinion on any written estimate - bring us a competing quote and we’ll read it with you line by line. Call (213) 474-3828 for your exact number; estimates are free.
Why Glendale Homeowners Call Topside Attic Insulation Glendale for Demilec Work
We’ve been running jobs across Glendale since 2016, including older ranch-style homes near the Verdugo Woodlands where dense-pack cellulose in balloon-frame walls is still the right call after Demilec extraction. Every job gets a written price before work starts and a Documented Photo Record when the crew leaves. On applicable jobs, you get before-and-after blower-door numbers so you can verify the air-sealing result yourself - not take our word for it.
Our materials come from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. No proprietary lock-in means if Demilec isn’t the right replacement for your situation, we’ll tell you and install what is. The 365-Day Done Right Promise covers all completed work, and calls are answered by a live person 24/7 - no voicemail loops, no callback windows measured in business days.
FAQs
Demilec’s material warranty covers original installation defects, not subsequent modifications by independent service providers. As an independent Demilec service provider, we document substrate conditions and installation parameters before removal so any valid original claim can still be pursued. For warranty-safe practices, we use removal methods that don’t alter adjacent warranted areas. Call (213) 474-3828 and we’ll review your specific installation date and warranty terms.
We source Demilec products when they’re the right specification for the job, but we’re not locked to any single brand. Our materials list includes Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. We’ll match or exceed the original R-value and vapor profile, and you’ll see the product data sheets in your written scope before work starts.
Spot repair works for isolated delamination or shrinkage under 5% of total coverage. Full removal is necessary when shrinkage exceeds 15%, when moisture readings behind the foam stay above 19% after 48 hours of drying, or when contamination (rodent, mold, or vermiculite) has penetrated the foam matrix. We determine this during the initial blower-door and moisture inspection - not by guessing from the hatch. Call for a free assessment.
Most residential jobs finish in one to two days. Contaminated removals requiring abatement coordination add one day. We don’t schedule faster than we can do right - Haven Standard Clause 1 means the written scope determines the timeline, not a sales target. Same-week scheduling is usually available; call (213) 474-3828 to confirm current openings.
Repair is cheaper when the failure is localized and the surrounding foam tests sound for adhesion and moisture content. Replacement becomes more economical when removal access is already required for another project - like a re-roof or HVAC replacement - or when repair would leave you with mismatched foam densities that complicate future work. We’ll show you both numbers in writing and let you decide.
Written by Wes Okafor, Owner, Topside Attic Insulation Glendale at Topside Attic Insulation Glendale, serving Glendale and nearby areas.