Owens Corning Home Energy Audit Nationwide | Walt’s Insulation

Owens Corning Home Energy Audit in San Antonio: What to Know First

An Owens Corning home energy audit in San Antonio typically runs $199-$450 depending on home size and how many diagnostic tests you need, and we can usually schedule it within 3 to 5 business days. As an independent Owens Corning service provider, Walt’s Insulation performs blower door tests, thermal imaging, insulation inspections, and duct leakage testing on homes with Owens Corning products installed, no matter who put them in originally. We’ll tell you exactly where your house is leaking conditioned air and what it’ll cost to fix it, with no obligation to hire us for the repair work. Call (866) 751-4428 and a live person answers, 24/7.

Call (866) 751-4428

This page is for San Antonio homeowners who already have Owens Corning insulation, attic systems, or ductwork and want to know if it’s actually doing its job. If you’re seeing uneven room temperatures, high summer electric bills, or rooms that never seem to cool down in August, an audit will pinpoint why.

Key Takeaways

• We test Owens Corning insulation and air sealing performance against San Antonio’s actual climate demands, not generic national standards.
• Blower door and thermal imaging tests reveal air leaks and insulation gaps you can’t see from the attic hatch.
• You get a written report with findings, photos, and a fix list ranked by what matters most.
• Free second opinion on any written energy audit estimate from another contractor.

How Owens Corning Products Fail - and How We Fix Them

Owens Corning makes solid products. But San Antonio’s heat and humidity push everything harder than most climates, and we see the same failure patterns repeat themselves across the city. Here’s what we actually find when we audit homes with Owens Corning materials installed:

• Pink Fiberglas batts with compressed or misaligned facing. The kraft facing on Owens Corning R-13 and R-19 batts is supposed to face the living space, but in older San Antonio homes we regularly find it stapled backward or left flapping. That facing is a vapor retarder, and when installed wrong, it traps moisture against the drywall. The fix is proper re-facing or replacing with unfaced batts plus a separate vapor barrier where the climate actually calls for it.
• AttiCat blown-in insulation settled below R-value. Owens Corning AttiCat fiberglass settles over time, especially in unconditioned attics where San Antonio’s 140°F summer heat cycles break down the loft. We use thermal imaging to find thin spots, then top off the attic to R-38 or R-49, depending on the home’s age and framing. Most attics we audit from the 1990s and 2000s are running at R-19 or less, even if the original install met code.
• Foam board gaps around attic access points. Owens Corning FOAMULAR extruded polystyrene boards get used a lot as attic hatch covers and knee-wall insulation in San Antonio. The boards themselves hold up fine, but the edges rarely get sealed. Gaps at the perimeter leak conditioned air year-round. We cut and seal the boards properly, then weatherstrip the hatch.
• Duct leakage where flex duct meets Owens Corning duct board. Homes with Owens Corning rigid duct board often have significant leakage at the collar connections, especially after 10-plus years of thermal expansion and contraction. A duct leakage test tells us exactly how many CFM you’re losing. We seal with mastic, not duct tape, and re-test to prove the improvement.
• Rafter vents blocked by original blown-in installs. When Owens Corning AttiCat or ProPink blown-in was installed without baffles at the eaves, the soffit vents get buried. The attic stops breathing, humidity climbs, and in San Antonio that means mold on the north-facing roof deck within a few years. We clear the vents, install proper baffles, and re-balance the attic ventilation.

Our Owens Corning Home Energy Audit Process

When you call for an Owens Corning home energy audit in San Antonio, here’s what actually happens, start to finish:

1. 1
   Call and scheduling. You reach a live person, not voicemail. We ask about your home’s age, square footage, and what problems you’re noticing, then schedule a time that works. No trip charge inside the service county.
2. 2
   Visual inspection. We walk the attic, crawl space, and exterior, documenting every Owens Corning product we find, its condition, and any obvious installation issues.
3. 3
   Blower door test. We depressurize the house and measure exactly how much air is leaking in through the building envelope. This gives you a number, not a guess.
4. 4
   Thermal imaging. Infrared cameras show us precisely where insulation is missing, compressed, or wet, and where air is bypassing around outlets, can lights, and framing.
5. 5
   Duct leakage test. We pressurize the duct system and measure CFM loss. Most San Antonio homes we test lose 20 to 30 percent of conditioned air before it reaches the registers.
6. 6
   Written report and straight talk. You get photos, the test numbers, and a prioritized list of fixes with pricing. If something doesn’t need fixing, we tell you that too. Walt Brenner built this business on telling people the truth, even when it means less work for us.

What Owens Corning Home Energy Audit Costs in San Antonio

Here’s the straight answer on pricing for an Owens Corning home energy audit in San Antonio:

What moves the price is home size, number of systems (some San Antonio homes have two AC units and duct runs), and whether the crawl space needs inspection too. We give upfront pricing before we start, and if you have a written estimate from another company, we’ll give you a free second opinion. The audit fee is credited toward any insulation or air sealing work you hire us to do.

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

We’ve been doing this since 2000, and we’re the one down the road, not a national franchise with an 800 number and a rotating crew. Walt Brenner grew up on the north side of San Antonio and learned the trade at San Antonio College before spending years in attics figuring out what actually works in South Texas heat. When one of our background-checked, uniformed technicians shows up at your door, you know who you’re letting in. And every job, including energy audits, carries the Done Right Promise: if it’s not done right, we make it right, no runaround. We also work with Reflectix and other manufacturer lines, so if your home has mixed materials, we can assess everything in one visit. Call (866) 751-4428 and talk to a real person, any hour.

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