Owens Corning Insulation Removal & Replacement in Palo Alto: What to Know First
We provide independent Owens Corning insulation removal and replacement in Palo Alto, typically completing most jobs in one to two days with a written price locked in before any work starts. Most attic insulation removals in Palo Alto homes run between $2,800 and $5,400 depending on contamination level, access difficulty, and whether air sealing is scoped. We do not offer estimates over the phone that change once the crew arrives; the written price you receive is the price you pay.
This page is for homeowners in Palo Alto who have identified Owens Corning insulation in their attic, whether it’s Pink Fiberglas batts, blown-in AttiCat system material, or older Thermafiber mineral wool, and need it removed due to rodent damage, water staining, asbestos-adjacent vermiculite concerns, or simply age-related compression below labeled R-value. If you’re seeing uneven temperatures between rooms, rising PG&E bills despite mild Peninsula winters, or you’ve found droppings during a storage trip to the attic, the insulation may be compromised even if it looks intact from the hatch. Call us at (650) 352-3577 for a free estimate with a written scope and price before any work begins.
How Owens Corning Products Fail - and How We Fix Them
- Pink Fiberglas batts (R-30, R-38, R-49) settle and bridge over joists. The paper-faced batts Owens Corning has sold for decades in Palo Alto’s ranch and Eichler-era homes compress where homeowners walked for storage or where HVAC crews kneeled during duct repairs. We remove the bridged, compressed sections and replace with fresh blown-in material that fills to full depth without gaps.
- AttiCat blown-in Fiberglas loses loft after roof leaks. The loose-fill material Owens Corning markets for fast attic top-offs wicks moisture from Palo Alto’s occasional driving winter rains, especially near vented soffits in older Midtown homes with original cedar shake roofs. We extract the clumped, delaminated material, treat the deck for mold if indicated, and reinstall to labeled depth with a depth marker photo in your documented record.
- Thermafiber mineral wool retains rodent urine odor. The denser, fire-rated mineral wool Owens Corning sells for multifamily and attached-wall applications in Palo Alto’s newer townhome developments doesn’t compress like fiberglas, but it absorbs organic contamination. We remove the affected batts entirely; surface cleaning never fully decontaminates mineral wool, and we won’t reinstall material that will off-gas when the attic heats past 120°F in July.
- Older unfaced Pink Fiberglas becomes a filter for attic dust. Pre-2000 Owens Corning batts without facing act as air filters when the attic is under negative pressure from leaky ductwork; the fiberglas traps Palo Alto’s fine clay soil dust and pollen, darkening and eventually reducing effective R-value by 15-20%. We remove the filtered material and seal the pressure boundary before installing replacement insulation.
- Retrofit jobs over unsealed top plates show thermal bypass. Owens Corning’s installation guidelines assume a reasonably tight envelope, but many Palo Alto homes built 1950-1980 have open top plates where interior walls meet the attic. We find this on nearly every removal job: the insulation was doing nothing at the plate line because warm air was streaming past it. We seal the plates with fire-rated caulk or foam, then insulate.
Our Owens Corning Insulation Removal & Replacement Process

- 1
Written price and scope before work starts. We inspect the attic, identify the Owens Corning product line and condition, and deliver a flat price with no option to escalate. This is Haven Standard Clause 1.
- 2
Containment and negative air setup. We seal the attic hatch with a temporary poly barrier, run HEPA-negative air if contamination is present, and protect your living space. We photograph everything before touching material.
- 3
Removal and deck inspection. The Owens Corning material comes out by hand, vacuum, or both depending on type and contamination. We inspect the deck for leaks, mold, or structural issues that would compromise new insulation.
- 4
Air sealing before any replacement. Seal the leaks first. The insulation has nowhere to work if the air is moving around it. We seal can lights, top plates, penetrations, and chimney chases with appropriate fire-rated materials.
- 5
Replacement with matched or upgraded material. We reinstall with Owens Corning, Johns Manville, Knauf, or another specified brand to the depth required for your target R-value. No proprietary lock-in.
- 6
Documentation and blower-door verification if scoped. You receive a Documented Photo Record, the written scope completed, and on air-sealing jobs, before-and-after blower-door numbers showing the actual CFM50 reduction.
What Owens Corning Insulation Removal & Replacement Costs in Palo Alto
| Scenario | Typical Range | What Moves Price |
|---|---|---|
| Clean removal of batts, no contamination, standard attic access | $2,800 - $3,800 | Attic square footage, joist bay complexity, disposal fees |
| Contaminated removal (rodent, water, mold precursor) | $3,800 - $5,400 | HEPA containment hours, deck treatment, odor sealing |
| AttiCat or loose-fill removal with air sealing and replacement | $4,200 - $6,800 | Depth of existing material, top plate accessibility, blower-door test scope |
| Vermiculite or pre-1990 material (asbestos testing required) | $5,500 - $9,000+ | Lab results, abatement coordination, third-party clearance |
These ranges reflect what we see in Palo Alto homes from the Professorville cottages to the larger two-story builds near Old Palo Alto. Tight access hatches, engineered trusses that limit worker movement, and active roof leaks all add time. We will tell you exactly where your job falls before anyone starts. Call (650) 352-3577 for a free estimate; bring us any competing written quote and we’ll give you a free second opinion line by line.
Why Palo Alto Homeowners Call Topside Attic Insulation Palo Alto for Owens Corning Work

We’ve removed and replaced Owens Corning insulation in Palo Alto homes since 2016, and we’ve learned that the brand’s products perform well only when the envelope is sealed first. Our 365-Day Done Right Promise covers every completed job; if the new insulation settles prematurely or a sealed joint fails, we return and make it right. Wes Okafor trains every technician on Owens Corning’s specific density requirements for blown-in Fiberglas, because underfilled AttiCat jobs are common in this market and the homeowner rarely knows until the next PG&E bill arrives. We also service Reflectix and other brands, so if your attic has mixed materials from multiple renovations, one crew handles it without subcontractor handoffs. Calls are answered by a live person 24/7, and your technician is background-checked, uniformed, and named in a text before arrival.
FAQs
No. Owens Corning’s product warranties cover manufacturing defects, not installation or removal by an independent contractor. As an independent Owens Corning service provider with no manufacturer authorization, our work does not trigger or void any existing product warranty. We document the original product label when visible for your records. Call (650) 352-3577 if you want us to review what you have.
Yes. We source from Owens Corning, Johns Manville, Knauf, Rockwool, and others, and we match R-value by installed depth and density, not by brand name. The important figure is the thermal performance, not the color of the batt. We’ll show you the spec sheet for whatever material we propose.
Remove it if you see rodent droppings, water staining, mold growth, or if the material is compressed below the joist tops. Top off only if the existing material is clean, dry, and uniformly distributed with no thermal bypass at the edges. We photograph the condition and show you before recommending either path. A free estimate includes this assessment with no obligation.
Most jobs are scheduled within three to five business days of estimate approval. Contaminated jobs requiring HEPA setup or vermiculite testing may take longer due to lab turnaround. We do not book work we cannot start promptly; if our calendar is full, we tell you the actual first available date rather than overpromising.
Yes. Disposal to a licensed waste facility is included in our written price for standard Fiberglas batts and blown-in material. Vermiculite or asbestos-positive material requires a separate certified abatement contractor; we coordinate this and the price is shown separately in your scope before work starts. Call (650) 352-3577 for specifics on your material type.
Written by Wes Okafor, Owner, Topside Attic Insulation Palo Alto at Topside Attic Insulation Palo Alto, serving Palo Alto and nearby areas.