Owens Corning Blown-In Insulation in Round Rock: What to Know First
We provide independent Owens Corning blown-in insulation service in Round Rock, typically scheduling within 48 hours and completing most attic jobs in a single day. Most Owens Corning blown-in fiberglass or cellulose top-ups in a home this size run between $1,800 and $3,400 for attics up to 1,500 square feet, with full attic replacements ranging $3,200 to $5,800 depending on existing depth and air-sealing needs. This page is for homeowners who already have Owens Corning insulation in their attic or walls and need to add to it, replace it, or fix a performance problem that started after the original install. Call (737) 259-7528 for a written price before any work starts.
How Owens Corning Products Fail - and How We Fix Them
- AttiCat PINK Blown-In Fiberglass settling below labeled R-value in Round Rock’s heat. The loose-fill product can settle 10-15% over the first two summers in attics that hit 140°F daily from June through September. We measure existing depth with a ruled probe at ten points, calculate the settled density, and blow to the corrected depth that achieves your target R-38 or R-49 rather than trusting the original bag count.
- ProCat Loose Fill Cellulose bridging over irregular joist bays in older Round Rock homes. In neighborhoods like Old Town Round Rock and Sam Bass Trails, pre-1990s framing with mixed 2×6 and 2×8 joists creates voids where the cellulose bridges across rather than filling corners. We break those bridges by dense-packing problem bays or switching to fiberglass in irregular cavities where cellulose won’t settle uniformly.
- InsulPure blown-in fiberglass losing contact with the ceiling plane after air-sealing bypasses were missed. Owens Corning’s fiberglass performs well when it stays put, but thermal bypasses around top plates and recessed cans create convection loops that shift material over time. We blower-door test first, seal every bypass we can access, then re-blow to restore continuous contact with the drywall.
- Duration series rigid foam baffles collapsing or shifting in high-velocity attic ventilation. The plastic wind baffles that keep soffit vents clear can detach in attics with powered ventilators or poor intake balance, creating spots where blown-in material blocks intake airflow. We reinstall with mechanical fasteners rather than staples, and we check for the negative pressure that caused the failure in the first place.
- Owens Corning Rigid Foam Board (Foamular) used as an air barrier but not sealed at seams. Homeowners sometimes find Foamular laid over existing insulation as a “cap” without sealing the perimeter or butt joints. It doesn’t stop air movement, and condensation can form on the cold side in Round Rock’s humid shoulder seasons. We remove or properly detail it, seal the deck, then blow new material to spec.
Our Owens Corning Blown-In Insulation Process

- 1
Call and schedule. A live person answers (737) 259-7528 24/7. We book a site visit, not a sales pitch.
- 2
Blower-door test and attic inspection. We pressurize the house to measure CFM50 - the single number that tells us how much conditioned air you’re losing. Wes Okafor and his crew have served Round Rock neighborhoods from Behrens Ranch to Fern Bluff long enough to know which attic configurations in this part of Williamson County hide bypasses around top plates and recessed cans.
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Written price before any work starts. Flat price, written scope, written warranty. Haven Standard Clause 1. No exceptions.
- 4
Air sealing first, then insulation. Seal the leaks first. The insulation has nowhere to go until you do. We seal top plates, can lights, penetrations, and chimney chases with appropriate fire-rated materials.
- 5
Blown-in installation to corrected depth. We use Owens Corning material when it matches the existing product and the job spec, or we explain why a different material from our multi-brand inventory serves the application better. No proprietary lock-in.
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Post-install blower-door test and documented photo record. You get the before-and-after CFM50 numbers, photos of sealed bypasses and finished depth, and the written warranty. The 365-Day Done Right Promise applies from that moment.
What Owens Corning Blown-In Insulation Costs in Round Rock
| Job Type | Typical Range | What Moves the Price |
|---|---|---|
| AttiCat / ProCat top-up (add R-19 to R-30 over existing) | $1,800 - $3,400 | Attic square footage, access difficulty, whether air sealing is needed first |
| Full attic removal and replacement with new blown-in | $3,200 - $5,800 | Existing depth, contamination (rodent, moisture), deck repairs |
| Dense-pack wall insulation (Owens Corning fiberglass or cellulose) | $2,400 - $4,600 | Wall area, cavity condition, interior or exterior access route |
| Air sealing + insulation package | $2,800 - $6,200 | Pre-seal blower-door number, complexity of bypass locations |
These are real Round Rock numbers for homes we’ve measured, not national averages. A 1,200-square-foot ranch in Forest Creek with good attic access and no prior air sealing typically lands near the middle of the top-up range. A two-story in Teravista with complex rooflines and multiple HVAC penetrations trends higher. Call (737) 259-7528 for your written price - estimates are free, and we provide a Free Second Opinion on any written estimate you’ve already received.
Why Round Rock Homeowners Call Topside Attic Insulation Round Rock for Owens Corning Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. Our technicians are background-checked and uniformed; you get a named technician and a text when they’re on the way. We publish before-and-after blower-door numbers on every applicable job so you can verify the air-sealing result yourself, not take our word for it.
We source Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, and others - no proprietary product lock-in. If your existing Owens Corning insulation is performing well and just needs more depth, we match it. If the application calls for something else, we say so. The 365-Day Done Right Promise covers all completed work, and a live person answers calls 24/7.
We also service Reflectix and other radiant barrier products when your attic system includes multiple material types.
FAQs
No. Owens Corning’s product warranties cover manufacturing defects, not installation by independent contractors. As an independent Owens Corning service provider, we install to manufacturer density and depth specifications, which preserves any remaining product warranty. We document the install with photos and depth measurements so you have records if a claim ever arises. Call (737) 259-7528 if you want us to review your existing installation before we add to it.
Repair and top-up is cost-effective when the existing material is dry, uncontaminated, and hasn’t settled more than 20% below labeled depth. Full removal and replacement makes sense when there’s rodent activity, moisture damage, or inconsistent product types layered on top of each other. We make that call during the attic inspection and tell you which path we’re recommending before you sign anything. Free estimates; written price before work starts.
Most homeowners in Round Rock get a site visit within 48 hours of calling, and we complete the work on the scheduled day for standard attic jobs. Dense-pack wall work or full removals may need a second day depending on access and square footage. We don’t quote turnaround times we can’t meet - Haven Standard: Arrive on schedule.
We use Owens Corning loose-fill fiberglass and cellulose when the job spec calls for it and the existing material is compatible. For air-sealing accessories - baffles, fire-rated foam, weatherstripping - we use whatever component meets code and performs correctly, regardless of brand. We explain material choices in the written scope so you know exactly what you’re getting.
We photograph depth measurements at multiple points across the attic and include those images in your Documented Photo Record. We also re-run the blower-door test on air-sealing jobs so you see the CFM50 change in writing. If the numbers don’t match the scope, we don’t call the job complete. That’s the 365-Day Done Right Promise - if it’s not done right, we make it right.
Written by Wes Okafor, Owner, Topside Attic Insulation Round Rock at Topside Attic Insulation Round Rock, serving Round Rock and nearby areas.