CertainTeed Home Energy Audit Nationwide

CertainTeed Home Energy Audit in San Marcos: What to Know First

We provide independent CertainTeed home energy audit in San Marcos, typically completed same-day with written results delivered before we leave. Most audits run between $280 and $520 depending on home size and which diagnostics are needed. We do not start any work without a written price, and we do not ask you to call for a quote to find out what something costs.

Call (737) 337-8049

This page is for CertainTeed product owners in San Marcos who need a home energy audit - whether you’re troubleshooting high summer cooling bills, preparing to sell a home built between 2015 and 2025, or verifying that your insulation is performing as specified. We also service Reflectix systems and can cross-check compatibility where both brands appear in the same envelope assembly. Call (737) 337-8049 to schedule or text us if you prefer.

How CertainTeed Products Fail - and How We Fix Them

• CertainTeed InsulSafe SP settling in San Marcos attics. This blown fiberglass product is common in local production builds from 2018-2022. It settles 15-25 percent over the first three Texas summers, creating thin spots near the eaves where attic ventilation pulls it away from the top plate. We measure settled depth with a ruled probe, calculate the actual R-value against the labeled bag count, and recommend dense-pack cellulose or re-blow with stabilizer - never just add more loose fill over a settled layer.
• CertainTeed MemBrain vapor retarder pulling loose at staple lines. This smart vapor retarder is specified in many San Marcos energy-efficient builds, but the polyamide film can sag and detach when staple spacing exceeds 12 inches or when attic heat cycles the fasteners. We find the detached sections with blower-door smoke pencil tracing - a visual airflow test - then re-secure with cap staples and seal the perimeter with acrylic vapor-retarder tape, not duct tape, which off-gasses and loses adhesion.
• CertainTeed TrueComfort batt compression in kneewalls. TrueComfort fiberglass batts are often stuffed into San Marcos second-story kneewalls by framers who sized for the cavity width but not the electrical and plumbing penetrations. Compression drops the effective R-value by 30-50 percent. We remove the compressed batts, air-seal the kneewall floor and electrical boxes with fire-rated caulk, then reinstall at full loft or switch to damp-spray cellulose that fills irregular cavities without compression.
• CertainTeed CertaSpray open-cell shrinkage at rim joists. In San Marcos slab-on-grade homes near the Blanco River corridor, CertaSpray open-cell foam can pull away from concrete or wood rim joists after two to three years of seasonal humidity swing. The gap is usually 1/8 to 3/16 inch - invisible to the homeowner, obvious to an infrared camera. We cut back the failed bond, re-apply with a compatible two-component foam, and verify with a blower-door retest. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters.
• CertainTeed Optima dense-pack settling in balloon-framed walls. Optima is engineered for dense-pack sidewalls, but in older San Marcos neighborhoods like Dunbar and Sagewood, balloon framing with no fire blocking creates a 20-foot vertical chase. The pack density drops in the lower third, and thermal imaging shows a cold stripe we call “the waterfall.” We drill new access holes at mid-height, add pack ports, and re-densify to 3.5 pounds per cubic foot - the manufacturer’s minimum for wall applications.

Our CertainTeed Home Energy Audit Process

1. 1
   Schedule and scope confirmation. You call or text (737) 337-8049; a live person answers. We confirm square footage, year built, and which CertainTeed products you know are present. You receive a text with your technician’s name and ETA.
2. 2
   Blower-door test - before. We install a calibrated blower door in your front entry and depressurize the house to 50 Pascals. The CFM50 reading goes on your worksheet. In San Marcos, a 2,000-square-foot home from 2015-2020 typically reads 3,500-5,500 CFM50 if the envelope has never been sealed.
3. 3
   Thermal imaging and insulation inspection. We scan with a FLIR camera while the house is under pressure, marking air-leak paths and insulation voids. We probe CertainTeed loose-fill depth, check MemBrain attachment, and document batt compression. Photos go to your file automatically.
4. 4
   Duct leakage test if accessible. If your HVAC is in the attic, we pressurize the duct system and measure leakage to outside. San Marcos homes with flex duct in vented attics often leak 15-30 percent of conditioned air - paid for, but lost.
5. 5
   Written findings and price. You get a single-page summary with blower-door number, thermal images, insulation map, and a flat price for any recommended work. No work starts without your signature on that price.
6. 6
   Post-work verification. If we perform air sealing or insulation repair, we run the blower door again and hand you a printed page with before-and-after CFM50 and air-changes-per-hour. Your Documented Photo Record is emailed before the crew leaves.

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What CertainTeed Home Energy Audit Costs in San Marcos

Homes in the San Marcos Hills or along the I-35 corridor with complex rooflines take longer to test and may run toward the upper end. We do not charge extra for travel within San Marcos city limits. Every audit price is written and fixed before we start - Haven Standard Clause 1. Call (737) 337-8049 for a free estimate, or text us a photo of your attic access if you’re unsure what you have.

Why San Marcos Homeowners Call Topside Attic Insulation San Marcos for CertainTeed Work

We’ve sealed and insulated over 9,000 homes since 2016, and we publish before-and-after blower-door numbers on every job where air sealing is performed. Wes Okafor, who leads our crew, trained in building science at Dawson Technical Institute and spent two decades diagnosing attic failures before founding this company - he’s not guessing when he probes your CertainTeed insulation depth or traces a smoke pencil along a top plate.

Our 365-Day Done Right Promise applies to all work. If we seal it and the blower-door number doesn’t improve, we find out why and fix it at our cost. We source materials from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in means we specify what’s right for your assembly, not what we have a pallet of. Calls to (737) 337-8049 are answered by a live person 24/7. We also service Reflectix radiant barrier systems where those appear in mixed-brand installations.

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