Icynene Home Energy Audit in Cupertino: What to Know First
We provide independent Icynene home energy audit in Cupertino, typically completed same-day with written results delivered before we leave. Most audits run between $280 and $520 depending on home size and whether duct leakage testing is included. We do not start any work without a written price under Haven Standard Clause 1.
This page is for Cupertino homeowners with Icynene spray foam or cavity-fill insulation who are seeing uneven temperatures, rising PG&E bills, or moisture issues in the envelope. Whether your home is a 1970s ranch near Rancho Rinconada or a newer build in the Monta Vista hills, the audit protocol is the same: pressurize the house, measure the leaks, photograph the conditions, then hand you a report with numbers you can verify.
Call (831) 217-8521. A live person answers, 24/7.
How Icynene Products Fail - and How We Fix Them
- Icynene Classic Max shrinks in hot-roof assemblies. In Cupertino’s unvented attics where summer roof deck temperatures exceed 140°F, this open-cell foam can pull away from rafter bays, creating convection loops that bypass the insulation entirely. We find these gaps with thermal imaging during blower-door depressurization, then remove the failed sections and re-foam with a product rated for the assembly type.
- Icynene MD-R-200 develops surface oxidation in crawl spaces with seasonal moisture. The Cupertino foothills see winter groundwater rise that many builders didn’t account for; this medium-density foam’s skin degrades, turning chalky and reducing its vapor-retarder performance. Our fix is full removal, drying the substrate with targeted ventilation, then reinstalling with proper drainage plane integration.
- Icynene LD-C-50 loses adhesion on dusty top plates in older homes. The original blown-in cellulose in pre-1990 Cupertino tract housing leaves a fine silt on framing members. When LD-C-50 was applied directly over this without HEPA vacuum prep, the bond fails and air leaks resume at the ceiling-wall junction. We scrape, vacuum, prime with compatible contact adhesive, then reapply.
- Icynene H2Foam Lite absorbs water in rim joist applications. This hydrophilic open-cell formula was sometimes used below grade in Cupertino’s 1980s split-levels; when perimeter drainage failed, the foam saturated, rotted adjacent sill plates, and lost R-value. We remove it, assess structural damage, switch to a closed-cell product or exterior waterproofing, and document the assembly change.
- Icynene ProSeal Eco shrinks at extreme temperature cycling. Homes near Stevens Creek Boulevard with dark composite roofing see daily expansion-contraction stress that this eco-formulation wasn’t designed for. The resulting cracks are invisible from the living space but show clearly under blower-door infrared. We cut back to sound foam, fill with compatible sealant, and add a radiant barrier where appropriate.
Our Icynene Home Energy Audit Process

- 1
Schedule and scope. You call (831) 217-8521. We confirm home age, square footage, known Icynene product line if you have it, and whether you’ve noticed specific symptoms. We give you a written price range before booking.
- 2
Blower-door test. We install a calibrated fan in an exterior door and depressurize to 50 pascals. The CFM50 reading tells us, in one number, how leaky your envelope is. Typical Cupertino homes built 1965-1995 read 3,500-6,000 CFM50 before any work.
- 3
Thermal imaging under pressure. With the house depressurized, we scan walls, ceilings, and rim joists with a FLIR camera. Icynene failures show as cold stripes (missing adhesion), hot spots (convection loops), or irregular patterns (shrinkage gaps). Every anomaly is photographed and GPS-tagged.
- 4
Insulation inspection and R-value verification. We probe accessible cavities with a depth gauge and identify settled, compressed, or moisture-compromised Icynene. We note the original product specification against what’s actually installed.
- 5
Duct leakage test (if selected). We pressurize the duct system and measure leakage to outside. In Cupertino’s tight envelopes, even 15% duct leakage can dominate the heating and cooling load. We compare against the blower-door result to prioritize fixes.
- 6
Written report and next steps. You receive: the CFM50 number, ACH50 (air changes per hour), thermal images with annotations, R-value map, and a prioritized scope with flat pricing for any remediation. No work starts without your written approval.
Before
AfterWhat Icynene Home Energy Audit Costs in Cupertino
| Service | Typical Range |
|---|---|
| Basic Icynene audit (blower door + thermal imaging) | $280 - $380 |
| Full envelope audit with insulation inspection | $350 - $450 |
| Audit with duct leakage testing | $420 - $520 |
| Re-audit after remediation work | $180 - $240 |
What moves the price: home size above 3,000 square feet, multiple HVAC zones, inaccessible crawl spaces requiring prep, or homes with multiple Icynene product generations that need material identification. We have never charged a Cupertino homeowner more than the written price we provided before arrival.
Bring us any competing written estimate for a free second opinion. We’ll read it with you.
Why Cupertino Homeowners Call Topside Attic Insulation Cupertino for Icynene Work

We are an independent Icynene service provider, not a manufacturer affiliate. That means we stock and service Reflectix and other brands too, so our recommendation is based on what your assembly actually needs, not what a single product line can do.
Wes Okafor learned blower-door diagnostics at Olive-Harvey College before most contractors in the region had heard of the tool. His crew has audited homes from Rancho Rinconada to the foothills above Stevens Canyon Road, including the split-levels where original attic bypasses were never sealed before the insulation went down. We publish before-and-after blower-door numbers on every applicable job. The 365-Day Done Right Promise applies to all work, and every visit generates a Documented Photo Record.
Seal the leaks first. Insulation covers problems; it does not fix them.
FAQs
No. A diagnostic audit does not alter the installed product and does not affect warranty status. We document conditions photographically so any future warranty claim has independent third-party evidence. If we find a manufacturer defect during the audit, we flag it in the report and you can pursue that with your installer or Icynene directly. Call (831) 217-8521 to schedule.
Most Cupertino appointments are available within 48 hours, and same-day booking happens regularly. We do not use callback windows measured in business days. A live person answers (831) 217-8521 24/7 and can confirm the next available slot while you’re on the line.
Repair is viable when the failure is localized, the substrate is sound, and the original product was correctly specified for the assembly. Full removal and replacement makes sense when moisture has degraded the foam structure, when the wrong product was used (open-cell below grade, for instance), or when the failure pattern indicates systematic installation error. Our audit report gives you both options with flat pricing for each. Call (831) 217-8521 for a free estimate.
We use OEM Icynene when it is the correct product for the assembly and available with reasonable lead time. We also use quality aftermarket foams from our stocked lines, including Reflectix-compatible systems, when they outperform the OEM option for your specific condition. We never lock you into a proprietary product. The written scope specifies exactly what material goes where before any work starts.
You get a written report with: the blower-door CFM50 and ACH50 numbers, annotated thermal images, an R-value map of inspected cavities, photographed conditions of any Icynene failures, and a flat-priced scope for remediation if needed. This is standard on every audit, not available on request. Under Haven Standard, documentation is not optional.
Ready to see what your Icynene insulation is actually doing? Call (831) 217-8521. We’ll answer, schedule at your convenience, and give you a written price before anyone arrives.
Written by Wes Okafor, Owner, Topside Attic Insulation Cupertino at Topside Attic Insulation Cupertino, serving Cupertino and nearby areas.