GreenFiber Wall Insulation in Cedar Park: What to Know First
We provide independent GreenFiber wall insulation service in Cedar Park, typically completing drill-and-fill and injection jobs within one to two days of your scheduled start. Most GreenFiber wall retrofits in a Cedar Park home this size run between $2,800 and $5,400, and we give you that written price before anyone lifts a tool. This page is for homeowners who already have GreenFiber in their walls and need more of it, better of it, or a fix for what’s failing. Call (737) 245-6428 to get a free estimate with a real number on paper.
How GreenFiber Products Fail - and How We Fix Them
- GreenFiber All Borate Cellulose settling in 2×4 walls. The loose-fill product we see in Cedar Park’s 1990s and early-2000s builds, especially around Buttercup Creek and Ranch at Deer Creek, settles 20-25 percent over the first five years. That leaves a cold band at the top plate where R-value drops to nearly nothing. We pull the settled material, dense-pack to 3.5 pounds per cubic foot with fresh All Borate, and verify fill depth with a borescope at the header.
- GreenFiber Sanctuary settling behind poly vapor barriers. The stabilized cellulose in Sanctuary is treated with a water-based adhesive meant to resist settling, but in Cedar Park’s humidity cycling - 85 percent summer mornings dropping to 30 percent winter afternoons - that adhesive can break down where walls breathe. We find hollow channels behind intact poly that look fine until you probe. Our fix: remove the compromised section, let the cavity dry if moisture’s present, then repack with fresh Sanctuary at manufacturer spec.
- GreenFiber Low Dust formulation clumping from roof leaks. Low Dust is popular in occupied retrofits, but the oil treatment that suppresses dust also makes it hydrophilic. In Cedar Park, where wind-driven rain gets past flashing on homes built during the 2005-2012 rush, we’ve pulled saturated clumps that weighed triple their dry mass. We dry the cavity, replace any water-stained studs, then switch to a borate-only fill for that bay.
- Top-plate gaps in GreenFiber walls after truss lift. Cedar Park’s clay soils shift seasonally, and truss lift opens a gap at the wall-to-ceiling junction that bypasses whatever’s in the wall cavity. GreenFiber doesn’t seal air; it slows heat. We blower-door the house first - a pressurization reading that shows, in one number, how much conditioned air the building envelope is losing - then seal top plates with acoustic sealant before adding any new fiber.
- GreenFiber walls underinsulated for 2018 IECC code. Cedar Park adopted the 2018 International Energy Conservation Code, which calls for R-13 minimum in 2×4 walls and R-20 in 2×6. Older GreenFiber jobs at R-11 equivalent don’t meet it. We calculate actual installed R-value from density and thickness, then recommend dense-pack upgrade or, in 2×6 walls, a full cavity fill to hit R-21.
Our GreenFiber Wall Insulation Process

- 1
Call and schedule. A live person answers, 24/7. We book a site visit, not a sales pitch.
- 2
Blower-door test and borescope inspection. Wes Okafor or a trained tech runs the pre-install infiltration test - measuring how much conditioned air your house is leaking before a single batt goes in. We scope wall cavities through existing openings or drill small inspection ports.
- 3
Written price, written scope, written warranty. Under Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool. No exceptions.
- 4
Air sealing first. Seal the leaks first. Then insulate. The order matters more than the product. Top plates, electrical penetrations, and any bypasses get sealed before fiber goes in.
- 5
GreenFiber dense-pack or replacement. We use OEM-specified GreenFiber product or, when the homeowner prefers, quality aftermarket cellulose from the same mill source - always documented on your invoice. No proprietary lock-in.
- 6
Post-test, photo record, and walkthrough. We run the blower door again, hand you the before-and-after ACH50 numbers - the pressure-to-airflow figure that tells you exactly how leaky the envelope was - and leave a Documented Photo Record on a USB drive.
What GreenFiber Wall Insulation Costs in Cedar Park
Most GreenFiber wall insulation jobs in a Cedar Park home this size run between $2,800 and $5,400. Here’s what moves that number:
- Drill-and-fill retrofit, single story, 1,600 sq ft: $2,800-$3,800
- Two-story with gable walls, full cavity dense-pack: $4,200-$5,400
- Remediation: settled material removal + repack: add $600-$1,200
- Air sealing package (top plates, penetrations, blower-door verified): add $800-$1,500
Homes in older Cedar Park neighborhoods like Buttercup Creek often need more air sealing than expected - clay soil movement has opened gaps that insulation alone won’t fix. We find this on the pre-test, show you the number, and write it into the scope before we start. Call (737) 245-6428 for an exact quote - estimates are free.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for GreenFiber Work

We’re independently owned and operated under The Haven Standard since 2016 - not a franchise, not a brand affiliate. As an independent GreenFiber service provider, we work on the product without factory-dealer restrictions, which means we can source quality aftermarket cellulose when GreenFiber lead times stretch or when a homeowner wants a different borate treatment level.
Our 365-Day Done Right Promise applies to every job. If it’s not done right, we make it right - backed by a written scope and written warranty delivered before anyone starts. Our background-checked, uniformed technicians arrive with documented photo records and actual blower-door numbers, not feel-good claims. We also service Reflectix and other major brands, so if your walls need a hybrid approach - say, radiant barrier in the gable with cellulose in the stud bays - we don’t have to subcontract or pretend one product fixes everything.
Calls are answered by a live person, 24/7. No voicemail loops, no callback windows measured in business days.
FAQs
GreenFiber’s product warranty covers manufacturing defects regardless of who installs it, but installation workmanship is on the contractor. We provide our own 365-Day Done Right Promise on labor and document every bag lot number so any product claim can be traced. If you’re unsure about your existing warranty status, call us at (737) 245-6428 and we’ll read the paperwork with you.
Yes - we spec 12 percent ammonium sulfate plus borate, which matches GreenFiber All Borate’s fire and pest resistance. We document the treatment level on your invoice, and we can source actual GreenFiber product when the homeowner requests it specifically.
In most Cedar Park walls with more than 15 percent settling, removal and dense-pack repacking costs 20-30 percent more than topping off but delivers actual R-value at the top plate where you need it. Topping off leaves the cold band. We scope the cavity and show you before you decide. Call (737) 245-6428 for an exact quote - estimates are free.
Most GreenFiber wall retrofits schedule within five to seven business days, weather permitting for exterior access work. Emergency situations - wet insulation from active leaks - we prioritize same-day or next-day. Call (737) 245-6428 to check current availability.
No. We contain dust with poly barriers and negative air machines, and we use low-dust cellulose formulations in occupied spaces. The work is loud for a few hours per wall section, but you can stay in the home. We note any occupied-space protocol in your written scope before we start.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.