GreenFiber Home Energy Audit in Tustin: What to Know First
We provide independent GreenFiber home energy audit in Tustin, typically completed in 2 to 4 hours with same-day scheduling available most weekdays. Most GreenFiber audit jobs run between $280 and $520 depending on house size and whether duct leakage testing is included. We publish a written price before any work starts, and every audit ends with a documented photo record plus blower-door numbers you can hand to an HVAC contractor or future buyer.
This page is for Tustin homeowners who have GreenFiber cellulose insulation in their attic or walls and need to know where conditioned air is escaping, whether the existing insulation is performing to its rated R-value, and what to fix before adding more. If you’re in Tustin Legacy, Old Town Tustin, or the hillside pockets off Jamboree where the Santa Ana winds pressurize attic spaces differently than flatland homes, the leakage patterns we find are distinct. Call (657) 286-7673 to book. A live person answers, 24/7.
How GreenFiber Products Fail - and How We Fix Them
- GreenFiber All Borate loose-fill cellulose settling below labeled depth in Tustin attics. The product is specified at R-3.7 per inch, but we’ve measured settled depths in Tustin Legacy homes that lost 20 to 30 percent of their original thickness after five to seven years. Heat cycling in Orange County’s dry climate accelerates compression. We pull depth measurements at twelve points, calculate the effective R-value, and document the gap. If you’re below R-38 per 2022 California Energy Code, we note whether the fix is additional fill or removal and replacement.
- GreenFiber Sanctuary stabilized cellulose with failed borate retention in wall cavities. The borate fire retardant can leach in high-humidity conditions, though Tustin’s dry climate makes this less common than coastal Orange County. What we do find: pockets where installation density was inconsistent, creating thermal bypasses visible on our FLIR camera. We map these with thermal imaging, then determine whether dense-packing the cavity or removing and reinstalling is the right call.
- GreenFiber Low Dust formulations creating false confidence in air-tightness. The low-dust additive doesn’t change the material’s air permeability. Homeowners see clean installation and assume the envelope is tight. Our blower-door test tells the real story. In a 2019 Tustin Ranch job, the attic looked pristine at 14 inches of Low Dust, but the blower-door read 3,800 CFM50. Top plates and can-light penetrations were unsealed. We air-sealed first, then topped off. Post-test: 2,100 CFM50.
- GreenFiber wet-spray or stabilized products applied over unsealed electrical and plumbing penetrations. The cellulose bridges gaps temporarily, then cracks as it dries or settles. Conditioned air follows the path of least resistance. We find this most often in Tustin’s 1980s and 1990s stock, where trades ran romex and PEX through common wall plates without gaskets. Our fix: pull back, seal with fire-rated caulk or foam, reinstall.
- GreenFiber installed directly against non-IC-rated recessed can lights in older Tustin homes. This is a fire-safety issue and an energy issue. The cans create a chimney effect, pulling conditioned air into the attic. We identify non-IC fixtures during thermal imaging, mark them for replacement or proper air-sealing with ten-inch clearance and fire-rated covers, then document for the homeowner’s records.
Our GreenFiber Home Energy Audit Process

- 1
Call and scope. You describe the house, the GreenFiber product if you know it, and any symptoms: hot rooms, high bills, dust from vents. We quote a written price range before scheduling. No one arrives without you knowing the cost ceiling.
- 2
Blower-door test on arrival. We depressurize the house to 50 pascals and record CFM50. This single number quantifies total envelope leakage. We also run a zonal pressure test to identify which zones - attic, crawl space, garage - are most connected to conditioned space.
- 3
Thermal imaging and insulation inspection. FLIR scan of walls, ceilings, and duct runs. We measure GreenFiber depth at multiple points, check for settling, voids, moisture staining, and pest disturbance. Photos are time-stamped and geotagged.
- 4
Duct leakage test if included in scope. We pressurize the duct system and measure leakage to outside. In Tustin, where many homes have flex duct in hot attics, this often reveals more energy loss than the envelope itself.
- 5
Written findings and prioritized scope. You receive a documented photo record, the blower-door number, thermal images with annotations, and a written scope ranked by cost-effectiveness. We note what we can fix, what requires an electrician or roofer, and what the California Energy Code requires if you sell or remodel.
- 6
Scheduling and follow-through. If you proceed with air sealing or insulation work, we schedule under our 365-Day Done Right Promise. Every applicable job gets a post-work blower-door test so you see the change you paid for.
Before
AfterWhat GreenFiber Home Energy Audit Costs in Tustin
| Service | Typical Range | What Moves Price |
|---|---|---|
| Basic home energy audit (blower-door + thermal imaging) | $280 - $380 | House size, attic accessibility, number of HVAC zones |
| Audit with duct leakage testing | $380 - $520 | Duct accessibility, number of returns, need to seal registers for test |
| Follow-up post-work blower-door verification | $0 - $150 | Included if we did the original audit; standalone if another contractor performed work |
| Insulation depth assessment with R-value calculation | Included in base audit | N/A |
Homes over 3,500 square feet in Tustin Ranch or with conditioned attic space run toward the higher end. Tustin Legacy townhomes with shared walls and single-zone systems typically fall at or below the midpoint. We also provide a Free Second Opinion on any written estimate from another contractor - bring us their scope and we’ll read it with you.
Every audit price is flat and written before we start. No hourly surprises, no equipment surcharges. Call (657) 286-7673 for your exact quote. Estimates are free.
Why Tustin Homeowners Call Topside Attic Insulation Tustin for GreenFiber Work

We’ve logged a lot of hours in Tustin Legacy, where the post-redevelopment housing stock made blower-door testing a baseline step rather than an afterthought. Wes Okafor and our crew have been at this since 2016, and we don’t blow insulation over an unsealed attic floor. Ever. Seal the leaks first. Then insulate. The R-value on the bag means nothing if conditioned air is moving through the gap around that recessed can.
Our 365-Day Done Right Promise covers all completed work. You get a written scope, written warranty, and documented photo record before anyone lifts a tool. On applicable jobs, we publish before-and-after blower-door numbers so you can verify the performance change. We also service Reflectix and other brands, so if your audit reveals that a different material suits your situation better, we won’t force-fit GreenFiber where it doesn’t belong.
Calls are answered by a live person, 24/7. Background-checked, uniformed technicians. Named technician, text when we’re on the way. That’s Haven Standard.
FAQs
No. GreenFiber’s warranty covers product defects, not diagnostic testing. As an independent GreenFiber service provider with no manufacturer affiliation, our audit is non-invasive: we pressurize the house, take images, and measure depths. We don’t alter the installation unless you authorize separate repair work. If you’re concerned about warranty status, we document the pre-existing condition so there’s a clear record.
Call (657) 286-7673 if you need clarification on what’s covered.
Most Tustin appointments are available within 48 hours, sometimes same-day if you call before 10 a.m. We don’t do callback windows measured in business days. A live person answers 24/7 and can hold a slot with your address and a written price range.
Call (657) 286-7673 to check today’s availability.
Repair is viable if the cellulose is dry, pest-free, and simply settled below spec. We dense-pack or top off and air-seal. Replacement makes sense if there’s moisture damage, rodent contamination, or failed borate retention - rare in Tustin’s climate but possible near roof leaks or bathroom vent discharges. The audit tells us which path is cost-effective. We’ll show you the thermal images and explain the numbers so you decide.
Call (657) 286-7673 for a free estimate on either path.
GreenFiber doesn’t manufacture “parts” in the traditional sense - it’s a cellulose insulation product line. For air-sealing materials used in conjunction with GreenFiber systems, we source from Owens Corning, Johns Manville, Knauf, and other manufacturers as the job requires. No proprietary lock-in. If your audit reveals that a different insulation brand performs better for your specific envelope, we’ll say so. We also service Reflectix installations and can compare real-world performance data.
Call (657) 286-7673 to discuss material options for your scope.
You receive a documented photo record with time-stamped images, the blower-door test result in CFM50, thermal images with annotations, measured insulation depths with calculated R-values, and a written scope of recommended work ranked by cost-effectiveness. This is your paper trail for future HVAC contractors, home sales, or California Energy Code compliance. We deliver it before we leave or within 24 hours by email.
Call (657) 286-7673 to schedule your documented audit.
Written by Wes Okafor, Owner, Topside Attic Insulation Tustin at Topside Attic Insulation Tustin, serving Tustin and nearby areas.