GreenFiber Home Energy Audit in Menlo Park: What to Know First
We provide independent GreenFiber home energy audit in Menlo Park, typically completed same-day with written results delivered before we leave. Most audits run between $280 and $520 depending on home size and which diagnostic tests are needed. We do not start any work without a written price, and we do not sell insulation on the same visit as the audit.
This page is for GreenFiber owners in Menlo Park who need a blower-door test, thermal imaging, or insulation inspection to figure out why their home isn’t holding temperature the way it should. If you own a GreenFiber cellulose installation from the last ten to fifteen years and your PG&E bills are climbing, or rooms near the Dumbarton corridor stay cold despite the thermostat reading 72, the problem is usually air movement through the envelope, not the insulation itself. Call (510) 876-4113 to schedule. Estimates are free.
How GreenFiber Products Fail - and How We Fix Them
- GreenFiber All Borate loose-fill cellulose settling below labeled R-value in Menlo Park’s marine climate. The steady humidity off the Bay, especially in older neighborhoods near Flood Park, causes cellulose to compact faster than the dry-heat regions GreenFiber tests for. We measure settled depth with a calibrated probe, compare it to the original bag count, and calculate actual R-value. If it’s dropped below 70% of labeled performance, we document the gap and recommend top-off or removal.
- GreenFiber Sanctuary blown-in wool-cotton blend absorbing moisture in crawl spaces and low-clearance attics. The natural fiber content wicks ground moisture in Menlo Park’s clay-heavy soils, particularly in homes near the Alameda de las Pulgas ridge where drainage is slow. Thermal imaging shows cold spots that look like missing insulation but are actually damp, compressed batts. We pull moisture readings with a pinless meter and specify vapor-barrier retrofit before any new material goes in.
- GreenFiber stabilized cellulose losing fire-retardant borate treatment in homes with roof leaks or bathroom vent discharge into attics. The borate wash leaches out with repeated wetting, and the remaining material becomes a mold substrate. We see this in Menlo Park Eichlers and ranch homes with original low-slope roofs. Our fix: map the wet pattern with an infrared camera, remove compromised material, seal the leak source, then reinsulate with fresh product.
- GreenFiber dense-pack wall insulation sagging in balloon-framed walls common to pre-1960 Menlo Park construction. The material was blown at pressure adequate for platform framing, not the continuous stud bays of homes near the Allied Arts Guild neighborhood. We use borescope inspection through switch-plate openings to check for voids, then re-dense-pack with higher-pressure equipment and targeted tube placement.
- GreenFiber products installed over unsealed top plates and can-light penetrations. This isn’t a product failure, it’s an installation failure we see constantly. GreenFiber cellulose at any R-value cannot stop air flow through a 1/2-inch gap. Our crews seal first with fire-rated caulk and rigid foam, then add insulation. “Seal the leaks first. The insulation has nowhere useful to go until you do.”
Our GreenFiber Home Energy Audit Process

- 1
Call and scheduling. A live person answers. We ask square footage, year built, last insulation date, and whether you have the original GreenFiber installation paperwork. We text a 2-hour arrival window.
- 2
Blower-door test on arrival. We depressurize the house to 50 Pascals and record CFM50, the single number that tells us how much conditioned air is escaping. Wes Okafor started every job this way back in Chicago, and we still do. The pre-test number goes on your written report.
- 3
Thermal imaging and insulation inspection. We scan walls, ceilings, and rim joists with a FLIR camera while the house is under pressure. GreenFiber cellulose shows a characteristic granular pattern when properly installed; voids and settling show as uniform cold spots. We probe depth at six to ten locations.
- 4
Duct leakage test if applicable. Many Menlo Park homes with GreenFiber attic insulation also have flex duct running through the same space. We seal registers and pressurize the duct system to measure leakage to outside. A 15% leakage rate means you’re heating your attic.
- 5
Written findings and price. Before we pack up, you get a printed report with blower-door number, thermal images, insulation depth map, and a flat price for any recommended work. No work starts without it. Haven Standard Clause 1.
- 6
Post-work verification if you hire us. On any air-sealing or insulation job, we run the blower door again and hand you the before-and-after numbers. The 365-Day Done Right Promise applies.
Before
AfterWhat GreenFiber Home Energy Audit Costs in Menlo Park
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Basic home energy audit (blower door + thermal imaging + insulation inspection) | $280 - $380 | Home size under 2,500 sq ft, single HVAC zone |
| Extended audit (adds duct leakage test) | $380 - $520 | Multiple zones, crawl space access required, older ductwork |
| GreenFiber-specific material analysis (lab moisture/borate content) | $120 - $180 | Added to audit if we suspect treatment degradation |
| Written second opinion on competitor’s GreenFiber estimate | Free | Bring us their written scope; we’ll read it with you |
Homes over 3,500 square feet or with conditioned attic space run higher. We do not quote by phone without seeing the space. Call (510) 876-4113 for an exact quote - estimates are free.
Why Menlo Park Homeowners Call Topside Attic Insulation Menlo Park for GreenFiber Work

We are an independent GreenFiber service provider, not affiliated with or authorized by the manufacturer. That independence matters because we also work with Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and Reflectix - if your GreenFiber product is the wrong fit for your home’s condition, we’ll say so and specify something else.
Our crews are background-checked and uniformed. Calls are answered by a live person 24/7. Every job gets a Documented Photo Record, and on applicable work we publish before-and-after blower-door numbers so you can verify the result yourself. The 365-Day Done Right Promise is in writing before anyone lifts a tool. Since 2016, under The Haven Standard, we’ve sealed and insulated over 9,000 homes, every one with a written price first and a documented record at the end.
FAQs
No. GreenFiber’s limited warranty covers product defect, not installation or performance verification. Our audit is diagnostic documentation, not modification. If we find a manufacturing issue during inspection, we flag it in our report so you can file a claim with your original installer or GreenFiber directly. Call (510) 876-4113 to schedule - estimates are free.
GreenFiber does not sell direct to contractors in bag quantities for residential top-off work. We source equivalent borate-treated cellulose from Knauf or Johns Manville that matches GreenFiber’s spec sheet for fire resistance and settled density. If your original installation was part of a utility rebate program with specific product requirements, we note that in our written scope. Call (510) 876-4113 for an exact quote - estimates are free.
Repair is cheaper when settling is uniform and moisture damage is under 10% of total coverage. Removal and replacement makes sense when borate leaching is widespread, rodent contamination is present, or the original installation skipped air sealing and you’re chasing the same leaks for a second time. Our audit gives you the numbers to decide. Call (510) 876-4113 for an exact quote - estimates are free.
Most GreenFiber audits in Menlo Park are scheduled within 48 hours, same-day if you call before 10 AM and the job is urgent - PG&E bill spike, visible mold, or post-storm moisture intrusion. We do not manufacture scarcity. Call (510) 876-4113 for availability.
A printed report with the blower-door CFM50 reading, dated thermal images with temperature annotations, an insulation depth map with probe locations marked, and a written scope with flat price if work is recommended. On jobs we complete, you also get before-and-after blower-door numbers and a photo record of the work. Haven Standard: Have it in writing.
Written by Wes Okafor, Owner, Topside Attic Insulation Menlo Park at Topside Attic Insulation Menlo Park, serving Menlo Park and nearby areas.