Owens Corning Blown-In Insulation Nationwide | Walt’s Insulation

Owens Corning Blown-In Insulation in San Antonio: What to Know First

Owens Corning blown-in insulation in San Antonio typically runs between $1,800 and $4,200 for a full attic install, and we complete most jobs in a single day. As an independent Owens Corning service provider, we install, top up, and repair their blown-in fiberglass and cellulose lines across Bexar County, from Alamo Heights to Helotes. If you already have Owens Corning insulation that’s settled, damp, or underperforming, this page tells you what’s actually going on and what it costs to fix. Call (866) 751-4428 and you’ll get a live person, not a voicemail.

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How Owens Corning Products Fail, and How We Fix Them

Owens Corning makes solid insulation, but San Antonio’s climate has a way of exposing weak points that don’t show up in Ohio or Michigan. Here’s what we actually see in attics across the city.

• AttiCat fiberglass settling below R-value in older homes. Owens Corning’s AttiCat blown-in fiberglass is a good product, but homes insulated before 2010 often got R-30 blown to a depth that’s since compressed to R-22 or worse. The San Antonio heat cycling causes the fibers to settle faster than in cooler climates. We fix it by blowing a top-up layer of AttiCat Pink fiberglass to restore depth, usually the same day we diagnose it.
• ProPink blown-in insulation and rodent intrusion. We pull back the pink and find tunnels, droppings, and chewed wiring more often than most homeowners want to think about. Rodents love blown-in insulation because it’s easy to burrow through. In neighborhoods like Terrell Hills and Castle Hills, where mature trees give squirrels and rats easy roof access, this happens constantly. We do rodent proofing, remove the contaminated insulation, and blow in fresh Owens Corning material.
• Dense-pack cellulose absorbing humidity in vented attics. Owens Corning’s cellulose-based blown-in products work fine until a San Antonio attic gets humid and ventilation is poor. The material wicks moisture, clumps, and loses its R-value. We see this in homes where bathroom fans vent into the attic instead of outside. We fix the venting first, then replace the affected insulation. No point blowing in new material over a moisture problem.
• Uneven coverage from previous contractors. We can’t tell you how many San Antonio attics we’ve walked into where Owens Corning blown-in fiberglass was installed beautifully near the attic hatch and then barely scattered over the far corners. Lazy work, plain and simple. Our techs map the attic and measure depth across the entire space before we add anything, so you get even coverage and the R-value you paid for.
• Can lights and recessed fixtures buried under blown-in insulation. Owens Corning insulation doesn’t cause this, but improper installation of it around recessed lights creates a fire hazard. We build or install proper barriers around any fixture that isn’t IC-rated, then blow the insulation around them safely. This is code-required work that plenty of handymen skip.

Our Owens Corning Blown-In Insulation Process

Here’s how a typical Owens Corning blown-in job goes when you call Walt’s Insulation in San Antonio.

1. 1
   Call and talk to a real person. Walt Brenner’s team answers live, 24/7. You describe what you’re dealing with: high energy bills, hot rooms, damp insulation, rodent signs. We schedule a visit.
2. 2
   We inspect the attic properly. A technician checks existing insulation depth, material condition, ventilation, air leaks, and any wiring or fixture concerns. We map gaps and settled areas before quoting any work.
3. 3
   We give you an honest choices. Full removal and replacement, a blow-in top-up, or dense-pack wall insulation. We tell you whether Owens Corning AttiCat fiberglass or a cellulose product fits your home better. We don’t upsell what you don’t need.
4. 4
   The installation happens fast. Our crew air-seals what needs sealing, sets up barriers around fixtures, and blows in the material at the correct depth. Most attics are done in four to six hours.
5. 5
   We clean up and verify. We measure depth in multiple spots, show you the before and after, and make sure there’s no insulation dust drifting into your living space.
6. 6
   The Done Right Promise kicks in. If something isn’t right, we come back and make it right. Lifetime workmanship on every job.

What Owens Corning Blown-In Insulation Costs in San Antonio

Straight numbers, because you deserve them. These are ranges for typical San Antonio homes based on attic size, existing insulation condition, and access.

What moves the price: attic accessibility, how much old material needs removing, whether air sealing is included, and whether we’re dealing with rodent damage or moisture. Call (866) 751-4428 for an exact quote. Estimates are free, and there’s no trip charge inside our service county. We’ll also give you a free second opinion on any written estimate you already have.

Why San Antonio Homeowners Call Walt’s Insulation for Owens Corning Work

We’ve been locally owned and owner-operated since 2000, and our shop is on a real street with a real address and a real license number, not an 800 number that rings in another state. When you call, a live person answers. When we schedule, our technicians show up on time, background-checked and in uniform. Walt Brenner started this business because he watched too many San Antonio homeowners get sold insulation that wasn’t right for South Texas heat, and he’s spent 25 years doing the opposite. We work with Owens Corning products regularly, but we also install Rockwool, Johns Manville, CertainTeed, Knauf, GreenFiber, and Reflectix. That matters because we’ll tell you honestly if Owens Corning is the right call for your house or if another brand fits better. We answer the phone live, talk to a real person, get a straight answer. And every job is covered by the Done Right Promise: if it’s not done right, we make it right, no runaround.

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