Johns Manville Home Energy Audit in Fullerton: What to Know First
We perform independent Johns Manville home energy audits in Fullerton, and most inspections take about two to three hours from start to finish. The audit itself runs $199 to $495 depending on home size and how many diagnostic tests you want, and we apply that full amount toward any insulation or air sealing work you hire us to do. If you own a Johns Manville-insulated home in Fullerton and want to know exactly where your conditioned air is leaking, call (657) 216-9948 and a live person will pick up.
This page is written for Fullerton homeowners who specifically have Johns Manville insulation products in their attics or walls and want the audit done by someone who actually knows how those products age in Southern California heat. We’ve been crawling through Fullerton attics since 2000, and we’ve seen enough Johns Manville jobs to know what holds up and what doesn’t.
How Johns Manville Products Fail - and How We Fix Them
- Johns Manville ComfortTherm batts losing R-value due to compression. ComfortTherm is the poly-wrapped batt line Johns Manville sells for walls and cathedral ceilings. In Fullerton ranch homes built in the 60s and 70s, we regularly find these batts jammed behind wiring and plumbing, which crushes the fiberglass and drops the effective R-value by 30% or more. A thermal imaging inspection during our audit catches this fast. The fix is usually pulling and re-fitting, or supplementing with blown-in fiberglass where the framing won’t cooperate.
- AtticProtect blown-in fiberglass settling unevenly in Fullerton’s dry heat. Johns Manville AtticProtect is a loose-fill product that’s common in newer Fullerton builds. What we see in homes around Coyote Hills and up toward the Brea border is that attic-side heat cycles cause the material to settle unevenly, especially around can lights and junction boxes. That leaves thin spots right where you need coverage. We measure settled depth during the audit and flag any zones below code minimums.
- Vapor barrier facing peeling on older Johns Manville kraft-faced batts. In crawl space and knee wall applications, the kraft paper facing on older Johns Manville batts eventually delaminates from the fiberglass. Once that paper separates, the vapor barrier stops doing its job, and in Fullerton’s marine-layer mornings, that means moisture creeping into the assembly. We see this a lot in homes near the Fullerton Arboretum where ground moisture runs higher. The fix is typically replacing with unfaced batts plus a proper separate vapor barrier.
- JM Spider loose-fill clumping around bathroom exhaust vents. Johns Manville Spider is a spray-applied fiberglass that insulates and sound-dampens. In Fullerton homes where bathroom fans vent into the attic (still surprisingly common in older stock), we find Spider clumping and matting around the vent terminations from years of humid air hitting the fibers. That clumped material loses loft and R-value. Our audit includes checking every exhaust termination, something most generic energy audits skip.
- Johns Manville foam board gaps at rim joists in raised foundations. Fullerton has a lot of raised-foundation homes, and Johns Manville AP Foil-Faced polyiso boards are a popular rim joist treatment. The failure we find is not the board itself but the installation: gaps where boards meet framing, no foam sealant at the edges, and thermal bridging that a blower door test exposes immediately. We seal those gaps with can foam and re-insulate correctly, because that’s often the single biggest air leak in the house.
Our Johns Manville Home Energy Audit Process
- 1
You call, you get a person. Not a phone tree. One of us answers, asks about your home’s age, square footage, and what’s making you suspect energy loss. We schedule the audit at a time that works for you.
- 2
We walk the house with you. Before any equipment comes out, we look at the obvious stuff: insulation levels, visible gaps, window seals, duct runs. We want to hear what you’ve noticed too, because you’ve been living with the drafts.
- 3
Blower door test. We set up the blower door and depressurize the house. This tells us the exact number of air changes per hour, which is the whole point of the exercise. Most Johns Manville-insulated Fullerton homes we test are still leaking way more air than the owners expect.
- 4
Thermal imaging and duct leakage testing. The infrared camera shows us exactly where heat is moving through your Johns Manville insulation, and a duct blaster test on the HVAC side quantifies how much conditioned air never reaches your rooms. In Fullerton summers, that duct number is often 20 to 30 percent loss.
- 5
We go over findings with you, plainly. You get a written report with photos, numbers, and specific recommendations. No scare tactics. If your Johns Manville insulation is doing fine and the real problem is duct leakage, we’ll tell you that. If the insulation needs work, we’ll price it frankly.
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You decide what’s next. The audit cost comes off any work we do. If we do the work, it’s covered by our Done Right Promise: lifetime workmanship, period. We stand behind it because we’re the ones who have to if something fails.
What Johns Manville Home Energy Audit Costs in Fullerton
Here’s what Fullerton homeowners should expect, based on what we’ve been charging and what our competitors are quoting:
- Blower door test only: $150 to $300
- Thermal imaging inspection (whole house): $100 to $250
- Full audit with blower door, thermal, and duct leakage test: $350 to $495
- Report-only follow-up (if we didn’t do the original audit): $75 to $150
What moves the price: home square footage, whether you have a single or multi-story home, and how many HVAC zones you have. Homes in the hills around Fullerton with split-level layouts take longer. We also don’t charge a trip fee inside our service county, and if you have a written estimate from another company, we’ll give you a free second opinion on it. Call (657) 216-9948 and we’ll give you an exact number before we show up.
Why Fullerton Homeowners Call Walt’s Insulation for Johns Manville Work
We’re the one down the road. We’ve been in Fullerton since 2000, our address is published, and our license number is real. Walt Brenner grew up in San Antonio, cut his teeth at San Antonio College, and has spent more hours in Fullerton attics than he’ll admit to. When we audit a Johns Manville-insulated home, we know what we’re looking at because we’ve seen how those products perform in Fullerton’s specific climate, from the dry inland heat around Cal State Fullerton to the cooler pockets near the Coyote Hills. We also service Reflectix radiant barriers, so if your home has a mix of products, we’re not going to scratch our heads. Every technician who walks into your house is background-checked and uniformed, and every call gets answered by a live person, 24/7. No voicemail, no answering service, no runaround.
FAQs
A full Johns Manville home energy audit in Fullerton costs $199 to $495 depending on home size and the specific tests involved. Basic blower door testing starts around $150, and a complete diagnostic package with thermal imaging and duct leakage testing lands in the $350 to $495 range. Call (657) 216-9948 for a firm quote, and remember that the audit fee is credited toward any work we do.
No. A home energy audit is diagnostic only; it does not modify, remove, or alter the insulation, so Johns Manville warranty coverage is not affected. If we find an actual defect in your Johns Manville product and you have documentation, we’ll tell you how to pursue a claim and we’ll handle the labor side properly. We do the job right the first time, because we’re the ones who have to stand behind it.
Often we can, especially if you call before noon. We run multiple crews across Fullerton, and we’ll always try to get someone out same-day when your schedule allows. Call (657) 216-9948 and ask; if we can’t make it today, we’ll get you on the book for the next day or two.
It depends what the audit finds. Settled AtticProtect or Spider can usually be fluffed or topped off, which is less expensive than a full removal. But compressed ComfortTherm batts or moisture-damaged kraft-faced batts usually need replacement rather than repair. We’ll show you the numbers for both options before you commit, and we’ll never recommend replacement when a repair does the job.
Yes. When you hire Walt’s Insulation for any insulation or air sealing work identified in your audit, we deduct the full audit cost from the work price. That means if the audit cost $350 and your repair quote is $2,000, you pay $1,650. There’s no separate fine-print rebate to wait on.
We can. Plenty of Fullerton homes have a mix of Johns Manville batts, Reflectix radiant barrier, and older fiberglass we didn’t install. Our audit covers all of it, and our recommendations will be brand-specific where it matters. We service all the major insulation brands, so you won’t get a generic answer.
Ready to Find Out Where Your Home Is Losing Energy?
Call Walt’s Insulation at (657) 216-9948 to schedule your Johns Manville home energy audit in Fullerton. A live person answers, the estimate is free, and the audit fee comes off any work you hire us to do. We service homes throughout Fullerton, from the ranch-style neighborhoods around the Arboretum to the newer developments up toward the Brea line. That’s how we’ve done it since 2000, and that’s how we’ll do it for you.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving Fullerton and nearby areas.