CertainTeed Insulation Removal & Replacement in Glendale: What to Know First
We provide independent CertainTeed insulation removal and replacement in Glendale, typically completing attic jobs in one to two days with same-day assessment available. Most CertainTeed removal and replacement projects in this market run between $2,800 and $6,400 depending on attic square footage, contamination level, and whether air sealing is required before new material goes in. We do not start work without a written price, and we do not blow new insulation over unsealed bypasses.
This page is for Glendale homeowners who’ve found CertainTeed insulation in their attic, walls, or crawl space and need it removed due to age, moisture damage, rodent activity, or pre-renovation prep. Call (213) 474-3828 to schedule a free assessment with a written estimate.
How CertainTeed Products Fail - and How We Fix Them
- CertainTeed InsulSafe SP (spray-applied fiberglass) - common in Glendale tract builds from the mid-2000s, this product settles into a dense mat when attic humidity cycles above 65% repeatedly, which happens in Glendale’s spring marine layer months. The settled material compresses to half its labeled R-value and traps moisture against drywall. We remove it with HEPA-contained vacuums, map the humidity source (usually bathroom vents terminating in attic space), then replace with properly vented, non-settling material.
- CertainTeed OPTIMA (dense-pack cellulose in netted cavities) - found in Verdugo Woodlands and Chevy Chase Canyon retrofits, this product fails when the installation net tears or staple spacing exceeds 8 inches, letting cellulose slump in balloon-frame wall cavities. We find the voids with thermal imaging, remove the compromised material through minimal exterior or interior access points, and re-dense-pack with new cellulose at 3.5 lbs/cu ft using proper inset stapling.
- CertainTeed SoftTouch (duct wrap and mechanical insulation) - used on HVAC flex runs in Glendale’s older ranch homes, the fiberglass facing degrades where it contacts metal duct seams at temperature differential points. The facing cracks, fiberglass sheds into airflow, and R-value drops at exactly the junction where condensation forms. We strip the old wrap, seal duct seams with mastic (not tape), then replace with new mechanical insulation sized to the actual duct diameter, not the nominal size.
- CertainTeed CertaSpray (open-cell spray foam, early formulations) - installed in some 2010-2016 Glendale additions, early lots shrank at the stud interface during curing, creating gap channels that bypass the air barrier entirely. You feel it as drafts despite “spray foam” on the invoice. We shave the failed foam flush to studs, remove the debris, and reapply with current-density open-cell or switch to closed-cell at rim joists where Glendale’s occasional freeze-thaw cycling demands it.
- CertainTeed MemBrain (smart vapor retarder, misapplied as primary air barrier) - this is a humidity-variable polyamide film, not an air barrier, but we’ve found it stapled over leaky attic floors in several Glendale homes as a cheap substitute for proper sealing. It does nothing for air leakage at 50 Pascals. We remove it, perform targeted air sealing at top plates, wire penetrations, and can lights, then install the actual insulation with correct vapor control for the assembly.
Our CertainTeed Insulation Removal & Replacement Process

- 1
Assessment and blower-door baseline. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing. In Glendale’s older stock, we typically see 3,500 to 5,500 CFM50 before any work. You get the number in writing.
- 2
Written price before any work starts. Under Haven Standard Clause 1, we deliver a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions.
- 3
Contained removal. We set up HEPA-negative containment, remove the failed CertainTeed product, and document the cavity condition with photos. If we find vermiculite (pre-1990 Glendale homes), we stop and advise on asbestos testing before proceeding.
- 4
Air sealing first, always. Seal the bypasses first. Insulation over air leaks is just expensive noise reduction. We seal top plates, electrical penetrations, can light housings, and duct boot junctions.
- 5
Replacement with matched or upgraded material. We source replacement from our supplier network including CertainTeed, Owens Corning, Johns Manville, Knauf, Rockwool, and others - no proprietary lock-in. The choice depends on your assembly, budget, and performance target.
- 6
Post-work blower-door and documentation. We test again, publish the before-and-after numbers, and deliver your Documented Photo Record with the ACH50 comparison. The 365-Day Done Right Promise begins when you sign off.
Before
AfterWhat CertainTeed Insulation Removal & Replacement Costs in Glendale
These are real ranges for jobs we’ve run in Glendale, from the ranch homes near Fremont Park to the hillside builds above Glenoaks Canyon:
| Scenario | Typical Range |
|---|---|
| Attic insulation removal, clean attic, replace with new fiberglass (1,200-1,800 sq ft) | $2,800 - $4,200 |
| Attic removal with rodent contamination, sanitize, air seal, replace | $4,500 - $6,400 |
| Dense-pack wall cellulose removal and replacement (per 1,000 sq ft of wall) | $3,200 - $5,100 |
| Spray foam shave-and-replace (early formulation failure, limited area) | $5,500 - $9,800 |
| Crawl space removal, vapor barrier, replace with conditioned-space appropriate material | $4,000 - $7,200 |
What moves the price: attic accessibility (vaulted ceilings add labor), contamination level (rodent droppings require PPE and disposal protocols), whether the original installation was done over unsealed bypasses (we fix that first), and material choice. We also service Reflectix and other brands if your project involves mixed materials.
Call (213) 474-3828 for a written estimate - assessments are free, and we offer a Free Second Opinion on any competing written quote.
Why Glendale Homeowners Call Topside Attic Insulation Glendale for CertainTeed Work

We’ve been running jobs across Glendale since 2016, and Wes Okafor’s crew knows the local housing stock: the 1940s balloon frames near Verdugo Woodlands, the 1970s ranch homes with original CertaSpray additions, the mid-2000s builds where InsulSafe SP settled into dense mats. We don’t guess at what’s in your walls; we inspect, test, and document.
Every job gets the Haven Standard: written price first, background-checked uniformed technicians, a text when your tech is en route, and a Documented Photo Record when the crew leaves. On applicable jobs, you get before-and-after blower-door numbers showing exactly how much air leakage we eliminated. The 365-Day Done Right Promise covers all completed work, and a live person answers calls 24/7 - no voicemail loops, no callback windows measured in business days.
We’re an independent CertainTeed service provider, not affiliated with or authorized by CertainTeed Corporation. That independence means we source replacement from multiple manufacturers and recommend what performs, not what moves a particular product line.
FAQs
CertainTeed’s product warranty covers manufacturing defects, not installation or removal performed by others. If your insulation failed due to installation error or environmental conditions (the usual case we see in Glendale), the warranty was likely already non-applicable. We document the failure mode with photos so you have a record if any manufacturer claim remains possible. Call (213) 474-3828 and we’ll review your situation.
We can source current CertainTeed equivalents when they’re the right choice for the assembly, but we don’t default to brand matching. In many Glendale homes, a different material performs better: Rockwool where fire rating matters at party walls, closed-cell spray foam at rim joists with freeze-thaw exposure, or dense-pack cellulose in balloon frames where air sealing is the actual priority. We explain the trade-offs and you choose.
Repair is rarely cost-effective for distributed insulation failure. Spot-repairing settled fiberglass or shrunk spray foam leaves you with inconsistent R-values and continued air leakage at the unrepaired areas. Full removal and replacement, with proper air sealing first, gives a documented result and qualifies for utility rebates that patchwork doesn’t. Most Glendale homeowners find the replacement route pays back faster through energy savings. We can run the numbers for your specific home.
Most attic jobs finish in one to two working days from start to finish. Wall cavity work takes two to three days due to access requirements. We can usually assess within 48 hours of your call and provide the written price same-day. If you have a sale or renovation deadline, tell us when you call - we’ll flag it in scheduling. Call (213) 474-3828 to book.
We do not remove asbestos-containing material ourselves. If we suspect vermiculite or damaged asbestos-containing insulation during our assessment, we stop work and refer you to a licensed abatement contractor. Once clearance testing is complete, we resume with the replacement installation. This protects your health and our crew’s, and it keeps your project documented for future disclosure. We include this contingency in your written price discussion so there’s no surprise.
Written by Wes Okafor, Owner, Topside Attic Insulation Glendale at Topside Attic Insulation Glendale, serving Glendale and nearby areas.