Icynene Home Energy Audit in Sunnyvale: What to Know First
An Icynene home energy audit in Sunnyvale typically costs between $250 and $450, and we can usually get a technician to your door within 4 to 7 business days. The audit itself takes 2 to 3 hours, and you’ll walk away with a written report that pinpoints exactly where your spray foam is underperforming, where air is bypassing it, and what’s worth fixing versus what can wait. This page is for Sunnyvale homeowners who already have Icynene insulation, whether it was sprayed last year or a decade ago, and want straight answers without a sales pitch.
If you’d rather skip the reading and talk to a person, call (669) 215-4805. A live person answers, 24/7, no voicemail.
How Icynene Products Fail and How We Fix Them
- Icynene Classic (open-cell, half-pound foam) shrinkage at the roofline. In older Sunnyvale ranch homes near Murphy Avenue, we regularly find Classic foam that has pulled back from rafters by a quarter inch or more. Open-cell foam naturally settles a bit over time, but the bigger culprit is the temperature swings between Sunnyvale’s hot attic summer and cool, damp winters. The shrinkage creates a continuous gap between the foam and the framing, and conditioned air escapes right through it. The fix is targeted air sealing at the gap plus a thermal barrier check, not a full re-spray.
- Icynene ProSeal (closed-cell) delamination from OSB sheathing. ProSeal is tough stuff, but when it’s sprayed onto dusty or damp OSB, or when the installer ran the substrate temperature too low, it can delaminate in sheets. A thermal imaging inspection during an energy audit shows this clearly as cold bands across the ceiling. We identify the delaminated zones, remove the loose material, and re-apply a compatible closed-cell product. Done Right, it stays put for the life of the house.
- Air bypass around recessed lights and bath fans in Icynene-insulated ceilings. Icynene is not a caulk. When builders spray foam around non-IC-rated recessed lights, there’s frequently a gap between the foam and the fixture housing because installers have to keep foam off heat-producing cans. Warm air streams into the attic through those gaps. Our audit catches this with a blower door test and a light-smoke test, and we seal it with high-temp rated materials that keep the fixture safe and the air inside the house.
- Uneven application thickness in Icynene Lite (low-density) wall cavities. Lite goes in fast, and on production builder jobs across Sunnyvale’s newer subdivisions, we see wall cavities where the foam is 1 inch thick in spots and 4 inches in others. R-value varies with it. A blower door test combined with thermal imaging maps the thin spots so you know exactly which walls need attention. You don’t have to guess, and you don’t have to open every wall.
- Water intrusion hidden behind Icynene in stucco-sided homes. Closed-cell foam is a great air barrier and a pretty good water barrier, which means a leak behind the foam can go unnoticed for years. In Sunnyvale’s older stucco homes, we sometimes find rotted sheathing behind Icynene that looked fine from both inside and outside. Our audit includes a moisture scan with a penetrating meter wherever staining, mustiness, or stucco cracking suggests a problem. Catching it early saves the framing.
One thing Icynene’s own site won’t tell you: most of the failures we see aren’t the foam’s fault. They’re installation issues, substrate issues, or job-site conditions that weren’t addressed before the spray gun ever turned on. That’s the difference between reading a product spec sheet and doing an audit on an actual house.
Our Icynene Home Energy Audit Process
- 1
Call and talk to a person. You reach us at (669) 215-4805. We ask about your home’s age, when the Icynene was installed, and what symptoms you’re noticing. That sets up the right audit, not a generic one.
- 2
We show up with the right tools. A calibrated blower door, a thermal imaging camera, a duct pressure gauge, and a moisture meter. Background-checked, uniformed technicians, so you know who you’re letting in.
- 3
We run the blower door test first. It quantifies the total air leakage and gives us a baseline. If you have Icynene in the attic but the blower door shows 14 air changes per hour, we know something bypassed the foam.
- 4
We walk the whole house with thermal imaging. We’ll show you on the screen where heat is moving in places it shouldn’t. We point out Icynene-specific issues: shrinkage gaps, thin spots, delamination, bypasses around fixtures.
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We put it all in writing. You get a clear report showing what we found, what we recommend, and what it costs. No vague language, no “we need to run some more tests.” If it needs fixing now, we say so. If it can wait, we say that too.
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We fix it, test it again, and back it forever. Any repair we do gets tested before we leave, and it’s covered by the Done Right Promise for as long as you own the home.
What Icynene Home Energy Audit Costs in Sunnyvale
Here’s what Sunnyvale homeowners can expect to pay for the common Icynene-related audit scenarios:
| Service | Typical Cost | What It Includes |
|---|---|---|
| Basic Icynene energy audit | $250 $350 | Blower door test, walkthrough inspection, written recommendations |
| Full audit with thermal imaging | $350 $450 | Everything above plus a room-by-room infrared scan and Icynene-specific findings |
| Duct leakage test (add-on) | $75 $150 | Pressurized testing of supply and return ducts, common leakage locations |
| Targeted moisture scan | $100 $200 | Penetrating meter scan of suspect areas behind Icynene foam |
What moves the price is house size, attic accessibility, and whether you want thermal imaging coverage on every wall or just the problem areas. Older two-story homes in Cherry Chase or the Heritage District with tight crawlspaces take longer than a simple ranch. We give you the number before we start, not after. Estimates are free, and if you’ve got a written estimate from another company, we’ll give you a free second opinion.
Call (669) 215-4805 for an exact quote on your Sunnyvale home.
Why Sunnyvale Homeowners Call Walt’s Insulation for Icynene Work
We’ve been doing this since 2000, longer than most of the spray foam brands now on the market have even existed. Walt Brenner started this company the way it still runs: a real owner, a real address, a real license number, and a phone answered by a real person. When you call about Icynene at 2 in the afternoon or 2 in the morning, you get one of us, not an answering service.
We work with Icynene, Owens Corning, Rockwool, Johns Manville, CertainTeed, Knauf, Demilec, and GreenFiber, so when we tell you something about your foam, it’s because we’ve worked with it and around it, not because we read a brochure. If your Icynene needs supplementing or a section replaced, we sometimes recommend Reflectix for radiant barrier work in specific attic configurations. We know the difference, and we’ll explain it in plain language.
Every job we do, Icynene or otherwise, carries the Done Right Promise. If it’s not done right, we make it right. No runaround, no fine print, for as long as you own the house. That’s the deal, and we’ve been honoring it for over 25 years.
Seniors and veterans save 10% on every job, always. There’s no trip charge inside our service county. And if you’ve got a written estimate from someone else, bring it to us for a free second opinion.
FAQs
Yes. We’re an independent Icynene service provider, which means we can inspect, test, and repair any Icynene product without being tied to a manufacturer’s sales program. That independence actually works in your favor: we’re not incentivized to sell you new Icynene if the old foam just needs a focused repair. Call (669) 215-4805 to schedule.
In most cases we’re at your door within 4 to 7 business days. If you’re dealing with a water issue or a sudden spike in your utility bill, tell us when you call and we’ll do everything we can to move you up.
Not much. Close and latch all windows and exterior doors, close fireplace dampers, and if you have pets, let us know when you schedule. The blower door test changes air pressure in the house for about 15 minutes, and some dogs don’t love it. We’ll work around your routine.
In Sunnyvale, repairing targeted Icynene problems nearly always costs less than a full replacement. A full re-spray of an attic can run $4,000 to $12,000, while typical air seal repairs around shrink gaps and fixture bypasses stay under $1,500. If replacement makes sense, we’ll tell you that with numbers in hand, and we won’t push it unless the existing foam is beyond saving.
It does. Any Icynene repair we perform, from air sealing to targeted re-application, carries the same lifetime Done Right Promise as any other job we do. If it’s not done right, we make it right, for as long as you own the home.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving Sunnyvale and nearby areas.