GreenFiber Home Energy Audit in Boerne: What to Know First
We provide independent GreenFiber home energy audit in Boerne, typically completed same-day with written results delivered before we leave. Most audits run between $280 and $550 depending on home size and test scope, and we publish every blower-door reading so you can verify the finding yourself. This page is for GreenFiber owners in Boerne who want to understand why their insulation isn’t performing the way the bag promised, and what a proper diagnostic looks like before anyone suggests adding more. Call (830) 529-7780 to schedule - a live person answers, 24/7.
How GreenFiber Products Fail - and How We Fix Them
- Low-Slope Settling in SANCTUARY Loose-Fill: SANCTUARY cellulose is marketed at R-3.7 per inch, but in Boerne’s Hill Country heat it can settle 15-20% in the first two summers when installed over an unsealed attic floor. The R-value drops; the homeowner sees a $40-$80 summer bill spike before they notice the insulation looks thinner. We pull back settled SANCTUARY, seal top plates and can-light penetrations with fire-rated foam, then reinstall to proper depth with density verification.
- Moisture Uptake in Humid Crawl Spaces: GreenFiber’s stabilized cellulose contains borate treatment, but in vented crawl spaces around Boerne’s Cibolo Creek basin, seasonal humidity above 70% overwhelms the borate buffer. The material clumps, loses loft, and can support mold on the paper backing of adjacent batts. We encounter this in 1980s ranch homes near River Road Park. Our fix: remove compromised material, install a proper vapor barrier, then switch to closed-cell spray foam or Rockwool if the crawl space can’t be fully encapsulated.
- Thermal Bridging Where SANCTUARY Meets Top Plates: GreenFiber’s loose-fill doesn’t address the wood-to-wood heat path at exterior wall top plates - a 1.5-inch gap that reads 15-20°F colder on our FLIR camera during a Boerne August afternoon. Homeowners blame the cellulose; the real problem is air moving through the plate gap, carrying conditioned air out and attic heat in. We seal with ZypFoam or equivalent fire-rated caulk before any new insulation goes in.
- Duct Contact with GreenFiber in Tight Attics: In Boerne’s older homes near Main Street, flex ducts often rest directly on SANCTUARY at the attic floor. The cellulose compresses to R-2 or less under the duct weight, and the contact point becomes a condensate risk when attic dew points spike. We suspend ducts with proper strapping, replace compressed material, and verify with blower-door that the duct boot isn’t pulling attic air into the supply.
- Insulator-Grade Skipping of Air Sealing: GreenFiber’s installation guidelines specify air sealing first, but we’ve audited three Boerne homes in the last eighteen months where a previous contractor blew SANCTUARY directly over unsealed recessed housings and plumbing stacks. The blower-door numbers barely moved. We extract the new material, seal properly, and reinstall - documenting the before-and-after CFM50 so the homeowner sees exactly what the first crew skipped.
Our GreenFiber Home Energy Audit Process

- 1
Schedule and scope confirmation. You call (830) 529-7780; we confirm square footage, year built, and any known comfort complaints. We send a written price range before arrival - Haven Standard Clause 1, no exceptions.
- 2
Pre-work blower-door test. We depressurize the house to 50 pascals and record CFM50 - the single number that tells us how much conditioned air is escaping through the envelope. In Boerne’s 1990s subdivisions, we typically see 3,500-5,500 CFM50 before any work.
- 3
Thermal imaging and insulation inspection. FLIR scan identifies thermal bypasses: missing insulation at eaves, compressed GreenFiber at duct contact points, unsealed top plates. We photograph everything for the Documented Photo Record.
- 4
Duct leakage testing (when indicated). We pressurize the duct system and measure leakage to outside. GreenFiber homes with ducts in vented attics often leak 20-35% of conditioned air - you’re paying to cool your attic.
- 5
Written findings and prioritized scope. You get a printed report with blower-door number, thermal images, and a ranked fix list. No generic recommendations - each item ties to a specific finding in your home.
- 6
Post-repair verification (if we do the work). After air sealing and any insulation correction, we rerun the blower door and hand you the before-and-after comparison. Seal the envelope first. Then fill it.
What GreenFiber Home Energy Audit Costs in Boerne
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Basic audit (blower door + thermal imaging) | $280-$380 | Home size under 2,500 sq ft, single HVAC system |
| Full audit with duct leakage test | $380-$550 | Multiple systems, ductwork in vented attic, access difficulty |
| Air sealing (after audit, if needed) | $1,200-$2,800 | Attic square footage, number of penetrations, existing insulation removal |
| GreenFiber reinstallation or supplement | $1.80-$2.80/sq ft | Depth required, access constraints, density specification |
Homes near the Cibolo Nature Center with original 1980s construction and no prior air sealing typically land at the higher end of audit and sealing ranges - more penetrations, more bypasses, more hours. We also service Reflectix installations and can compare your GreenFiber performance against radiant barrier alternatives if your roof geometry suits it. Every estimate is free; every price is written before work starts.
Why Boerne Homeowners Call Topside Attic Insulation Boerne for GreenFiber Work

We’ve sealed and insulated over 9,000 homes since 2016, and the ones that stick with us are the homeowners who read their three-star reviews as carefully as their fives. They want the blower-door number, not a promise. Wes Okafor runs every applicable job with before-and-after pressurization readings in pascals, printed and signed. Our 365-Day Done Right Promise means if the CFM50 doesn’t hold, we return - no dispatch fee, no argument. Technicians are background-checked, uniformed, and named before they arrive; you get a text when they’re en route. Materials come from Owens Corning, Johns Manville, Knauf, Rockwool, and GreenFiber - no proprietary lock-in, so we specify what actually fits your home. Calls are answered by a live person, 24/7. No voicemail loops. No callback windows measured in business days.
FAQs
No - an independent diagnostic audit does not void GreenFiber’s product warranty. We are not affiliated with or authorized by GreenFiber; as an independent GreenFiber service provider, we document existing conditions without altering installed material unless you authorize separate repair work. If we do perform air sealing or reinstallation, we follow GreenFiber’s published density and coverage specifications so any future warranty claim remains clean. Call (830) 529-7780 to schedule - estimates are free.
GreenFiber does not sell “parts” in the traditional sense - we specify fresh SANCTUARY loose-fill or alternative materials from our multi-brand inventory including Rockwool and Johns Manville. For borate-stabilized cellulose specifically, we source equivalent or identical spec material through regional distributors. We do not claim exclusive or preferred status with any manufacturer. The written scope you receive before work starts lists exact material, R-value target, and installed depth.
Repair is cheaper when the material is dry, uncompacted, and simply under-depth - typically $800-$1,500 to supplement SANCTUARY to proper R-38 after air sealing. Full removal and replacement runs $2.50-$4.00 per square foot in Boerne when moisture, rodent activity, or severe compression has compromised the cellulose. We make this recommendation during the audit, with photos, and never suggest removal when supplementing will work. Call (830) 529-7780 for an exact quote - estimates are free.
Most Boerne appointments are available within 48 hours, same-day for urgent comfort complaints or post-installation concerns. We answer calls 24/7 and schedule precise arrival windows, not four-hour blocks. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
You receive a printed blower-door report with pre-test CFM50, thermal images with temperature annotations, a written scope of recommended work with flat pricing, and a Documented Photo Record of all accessible conditions. If we perform subsequent air sealing, the post-test CFM50 is included so you can verify the performance change. These documents belong to you - we don’t withhold them for follow-up sales calls.
Ready to find out what your GreenFiber installation is actually doing? Call (830) 529-7780 to schedule your Boerne home energy audit. We’ll give you a written price before we arrive, run the blower door, and show you the numbers that matter.
Written by Wes Okafor, Owner, Topside Attic Insulation Boerne at Topside Attic Insulation Boerne, serving Boerne and nearby areas.