Knauf Wall Insulation in Cedar Park: What to Know First
We provide independent Knauf wall insulation service in Cedar Park, with most jobs scheduled within 48 hours and completed in a single day. A typical drill-and-fill or injection foam wall job in a Cedar Park home runs between $2,800 and $5,400 depending on wall cavity depth, existing condition, and whether we need to remove degraded material first. We give you a written price before anyone lifts a tool, and we don’t start work until you’ve signed it.
This page is for homeowners in Cedar Park, Leander, and the Buttercup Creek area who already have Knauf insulation in their walls and need to add, replace, or troubleshoot it. If your walls are cold in winter, your AC runs nonstop in July, or a contractor told you Knauf batts have settled and left gaps, we can measure the actual problem and show you the numbers. Call (737) 245-6428 to schedule a free estimate.
How Knauf Products Fail - and How We Fix Them
- Knauf EcoBatt settled below top plates in 2×4 walls. The cotton-fiber binder in early EcoBatt production breaks down faster in Cedar Park’s heat-cycling climate, where attic temperatures at the wall header regularly hit 130°F. The batt slips 3-6 inches, leaving a conductive gap we can see with a borescope. We remove the degraded batt and replace with dense-pack Knauf Jet Stream Ultra or an equivalent blown-in system that locks in place.
- Knafill loose-fill wall injection clumped from moisture intrusion. Knafill boric-acid treated cellulose is hydrophilic by design, but when Cedar Park’s driving rains find a window-flashing leak, the material cakes against the sheathing and loses R-value. We extract the clumped fill with a vacuum truck, seal the leak source with a blower-door-guided smoke test, then re-inject with conditioned material.
- Knauf Insulation Board (KIB) thermal bridging at rim joists. The 1.5-inch polyiso-faced board was spec’d into many 2015-2019 Cedar Park builds as a “flash-and-batt” hybrid, but installers often left 1/4-inch gaps at the rim that become convection loops. We pull the board, foam the gaps with closed-cell, and reinstall with proper compression fit.
- Knauf Mupan fiber glass batts compressed by improper installation. Mupan’s higher density requires exact cavity depth, 3.5 inches for a 2×4 or 5.5 for a 2×6. Cedar Park framers in the 2018-2021 building boom often jammed 5.5-inch batts into 2×4 walls to use up stock. We measure actual cavity depth with a depth gauge and specify the correct product, not whatever’s on the truck.
- Knauf Acoustical Wall Batts (AWB) sagging in interior soundproofing jobs. The unfaced AWB relies on friction fit, and in Cedar Park’s humidity swings the paperless batt can drop from horizontal ceiling bays or tall wall cavities. We secure with proprietary retention netting or switch to damp-spray application depending on the assembly.
Our Knauf Wall Insulation Process
- 1
Pre-install blower-door test. We pressurize the house and measure ACH50 - the air changes per hour at 50 Pascals of pressure - so we know exactly how much conditioned air is escaping through the walls before we touch anything.
- 2
Borescope inspection and material ID. We drill a 3/4-inch test hole and camera the cavity to confirm which Knauf product is in there, its condition, and whether there’s hidden moisture or pest damage.
- 3
Written scope and price. You get a flat price, a written description of the work, and the warranty terms before anyone starts. Haven Standard Clause 1: no exceptions.
- 4
Air sealing before insulation. We seal top plates, electrical penetrations, and any sheathing gaps we find. Seal the leaks first. Then insulate. The order matters more than the product.
- 5
Installation with documented photos. Every cavity fill, every density check, every blower-door retest gets photographed and added to your job record.
- 6
Post-work blower-door test and report. We hand you the before-and-after ACH50 numbers, the photo record, and the warranty paperwork. The crew doesn’t leave until you’ve seen it.
What Knauf Wall Insulation Costs in Cedar Park
| Job Type | Typical Range | What Moves the Price |
|---|---|---|
| Drill-and-fill fiberglass (2×4 walls, 1,200 sq ft home) | $2,800 - $3,900 | Cavity depth, number of stories, exterior finish type (stucco costs more to patch than siding) |
| Dense-pack cellulose replacement (removal + reinstall) | $4,200 - $5,400 | Amount of degraded material to extract, accessibility of top plates for sealing |
| Interior soundproofing (AWB or equivalent, per room) | $1,800 - $2,800 | Whether we need to open drywall or can work through existing access |
| Rim joist board replacement with air sealing | $1,200 - $2,200 | Linear feet of rim, basement vs. crawl space access |
These are real numbers for Cedar Park homes we’ve worked on, not teaser rates. A 2019 ranch in Ranch at Brushy Creek with settled EcoBatt ran $3,400. A two-story in Cedar Park Town Center with Knafill moisture damage hit $5,100 because we spent a full day on extraction. Call (737) 245-6428 for your exact quote - estimates are free, and we don’t charge to look.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for Knauf Work
We’re not a generalist crew that happens to carry Knauf on the truck. Wes Okafor brought blower-door discipline from Chicago’s building science program to Central Texas, and we’ve spent years running wall jobs in Cedar Park subdivisions where the same product failures show up again and again. We know the difference between a KIB board that can stay and one that’s bridging, and we won’t sell you new batts until we’ve sealed the leaks that killed the old ones.
Every job gets the 365-Day Done Right Promise, a written price before work starts, and a Documented Photo Record you can reference when you sell the house. We also stock Reflectix and other brands, so if your walls need a hybrid solution, we’re not locked into one manufacturer’s product line. Calls are answered by a live person, 24/7.
FAQs
No. Knauf’s product warranty covers manufacturing defects, not installation. As an independent Knauf service provider, we use warranty-safe installation methods and document everything so any legitimate product claim stays valid. If we find a factory defect during removal, we flag it and photo-document for your records. Call (737) 245-6428 if you have a specific warranty concern.
We can source current Knauf lines including Jet Stream Ultra, EcoBatt, and Mupan through our supplier network, though lead times vary. If your original product is discontinued, we’ll show you the closest thermal and density match from Knauf or our other suppliers, including Reflectix, and explain the performance difference in writing before you decide.
Spot-repairing settled batts almost never works. Once the binder has degraded and the material has compressed, you can’t refluff it to original R-value. Removal and dense-pack replacement costs 40-60% more than a clean initial install, but it’s the only way to restore the wall’s rated performance. We’ll show you the borescope footage so you can see what we’re seeing, then give you both options in writing.
Most estimates are scheduled within 48 hours, and standard wall jobs go on the calendar within a week of approval. Emergency situations, like wet insulation from a leak, get priority. Call (737) 245-6428 and we’ll tell you the next available slot.
No. Drill-and-fill and dense-pack work are done from outside or through interior access holes, and we contain dust with HEPA vacuums. The house stays pressurized and habitable. We do ask that you keep pets away from work areas, and we text you 30 minutes before arrival so you’re not surprised by the crew.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.