Icynene Attic Cleaning & Rodent Proofing in Cupertino: What to Know First
We provide independent Icynene attic cleaning & rodent proofing in Cupertino, typically completing most jobs same-day or next-day with a written price locked in before any work starts. Most Icynene attic cleaning & rodent proofing jobs in Cupertino run between $1,800 and $4,200 depending on contamination level, accessibility, and whether the foam needs selective removal. We do not require a phone call to learn your price - we deliver a flat, written scope after inspection.
This page is for Cupertino homeowners with Icynene open-cell or closed-cell spray foam in their attics who are dealing with rodent intrusion, soiled insulation, or compromised thermal boundaries. Whether you have Icynene Classic Plus, Icynene ProSeal, or the older Icynene MD-R-200 in a Rancho Rinconada tract home or a foothills split-level, we have worked on it. Call (831) 217-8521 or text us - a live person answers 24/7.
How Icynene Products Fail - and How We Fix Them
- Icynene Classic Plus (open-cell) - rodent tunneling and compression damage. Classic Plus cures to a semi-rigid foam with a density of about 0.5 lbs per cubic foot. In Cupertino attics, roof rats and mice chew pathways through this foam rather than going around it, creating thermal bypasses that blower-door tests reveal as spikes at the attic floor plane. We remove the compromised sections, sanitize the substrate, and reinstall matching-density open-cell or switch to a more rodent-resistant closed-cell barrier in high-risk zones.
- Icynene ProSeal (closed-cell) - delamination from plywood roof decks during high heat. ProSeal’s 2.0 lb density provides excellent R-value per inch, but in south-facing Cupertino attics where roof sheathing hits 160°F+ in August, the foam can pull away from the deck at the interface. We cut back the delaminated sections, expose the gap for inspection of rodent activity behind the foam, reattach with proper substrate prep, and seal the repair perimeter.
- Icynene MD-R-200 (legacy open-cell) - dust and allergen retention in degraded surface skin. The older MD-R-200 formulations develop a friable surface over 10+ years that traps rodent droppings, dander, and attic dust. Standard vacuuming does not remove material embedded in the cellular structure. We use HEPA-contained removal for the top 1-2 inches of degraded foam, followed by antimicrobial treatment and controlled reapplication - never just “cleaning over” contaminated foam.
- Icynene Water Blown (LC-50) - moisture accumulation and secondary mold. This lower-density formulation was used in some Cupertino green-build projects around 2015-2018. When rodents breach the attic envelope and introduce moisture through urine, the water-blown chemistry absorbs more readily than HFC-blown alternatives. We map moisture content with pinless meters, remove affected foam in layers to trace the intrusion path, and install a vapor-smart replacement with proper drying time documented.
- Icynene ProSeal Eco - UV degradation at gable vent exposures. Even brief UV exposure through unscreened gable vents degrades the surface chemistry, creating a powder that rodents track through and that standard attic cleaning cannot address. We trim back UV-damaged foam to sound material, install proper vent screening as part of rodent proofing, and resurface with compatible closed-cell or a protective coating depending on exposure risk.
Our Icynene Attic Cleaning & Rodent Proofing Process
- 1
Inspection with written scope. We access the attic, document foam type and condition with photos, identify rodent entry points, and deliver a written price before any work starts - Haven Standard Clause 1.
- 2
Containment and HEPA extraction. We isolate the work zone, remove soiled or compromised Icynene foam with vacuum systems rated for fine particulate, and bag all contaminated material for proper disposal.
- 3
Substrate sanitization and rodent exclusion. The exposed deck, top plates, and penetrations receive antimicrobial treatment. We seal entry points with rodent-proof materials - steel mesh, concrete patch, or metal flashing - not spray foam alone, which rodents chew through.
- 4
Foam replacement or restoration. We match the original Icynene density and chemistry where possible, or specify an alternative (including Reflectix radiant barrier in select applications) with the homeowner’s approval documented in writing.
- 5
Verification and documentation. On applicable jobs, we run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - and provide before-and-after CFM50 readings. Every job closes with a Documented Photo Record and the written warranty.
Before
AfterWhat Icynene Attic Cleaning & Rodent Proofing Costs in Cupertino
| Scenario | Typical Range |
|---|---|
| Spot rodent damage, localized foam removal & sanitizing (under 100 sq ft) | $1,800 - $2,600 |
| Moderate contamination, partial attic decontamination, exclusion work | $2,600 - $3,800 |
| Full attic restoration, extensive foam removal, comprehensive rodent proofing | $3,800 - $5,500+ |
| Add-on: blower-door verification with documented ACH50 report | $350 - $500 |
What moves the price: attic accessibility (scuttle vs. pull-down stairs), roof pitch, extent of foam degradation, whether the original Icynene was applied over unsealed bypasses that now need correction, and the number of rodent entry points requiring structural exclusion. We have seen Cupertino foothills homes where the original contractor blew Icynene Classic Plus directly over unsealed top plates - the air leaks are still there, just hidden, and fixing them properly adds scope but prevents the same failure twice.
Every estimate is free, written, and delivered before any work starts. Bring us a competing quote - we offer a Free Second Opinion on any written estimate.
Why Cupertino Homeowners Call Topside Attic Insulation Cupertino for Icynene Work
We are an independent Icynene service provider - not affiliated with or authorized by Icynene - which means we source materials from Icynene, Demilec, and other manufacturers based on what the job actually needs, not a distributor lock-in. Wes Okafor learned the trade at Olive-Harvey College, where blower-door diagnostics were standard curriculum before most South Bay contractors owned the equipment. His crew has worked on Icynene installations from Rancho Rinconada to the Monta Vista foothills, including the older split-levels where attic bypasses were never sealed before the foam went down.
Seal the leaks first. Insulation covers problems; it does not fix them.
Our 365-Day Done Right Promise applies to every job. Calls are answered by a live person 24/7. Background-checked, uniformed technicians arrive on schedule with a text when they are on the way - Haven Standard: Arrive on schedule, you get a named technician.
FAQs
No - Icynene’s limited warranty covers material defects, not service work performed by independent contractors, though we document our work to protect your coverage if a material claim arises later. We photograph pre-existing conditions and use Icynene-compatible chemistry for any repairs adjacent to warranted areas. Call (831) 217-8521 if you have your original warranty documents - we will review them with you before quoting.
We source Icynene OEM foam for jobs where density matching is critical, particularly with ProSeal closed-cell repairs that must bond to existing material. For some open-cell restoration work, we use equivalent-density formulations from Demilec or other suppliers with equivalent performance data - always disclosed in writing before application, never substituted without approval.
Spot cleaning and sanitizing runs roughly 40-60% less than full removal and reinstallation, but only makes sense when the foam structure is sound and contamination is surface-level. When rodents have tunneled through open-cell foam or moisture has degraded the cellular structure, partial removal becomes false economy - we will show you the difference with photos and a written comparison of both approaches. Estimates are free.
We typically schedule Icynene attic inspections within 24-48 hours, with same-day service available for active rodent intrusions that have compromised your thermal boundary. A live person answers (831) 217-8521 24/7 - no voicemail loops.
Yes - we regularly work with Demilec, and we also service Reflectix radiant barrier systems in attics where radiant heat gain is the primary concern rather than conductive loss. Our materials list includes Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in means we specify what performs, not what we are contracted to sell.
Written by Wes Okafor, Owner, Topside Attic Insulation Cupertino at Topside Attic Insulation Cupertino, serving Cupertino and nearby areas.