Johns Manville Home Energy Audit in New Braunfels: What to Know First
A Johns Manville home energy audit in New Braunfels from Topside Attic Insulation New Braunfels runs between $350 and $650 for most single-family homes, with same-day scheduling available and your written price delivered before we set up the blower door. We’re an independent Johns Manville service provider - not affiliated with or authorized by the manufacturer - and we publish before-and-after blower-door numbers on every audit so you see the actual CFM50 change, not a guess. This page is for homeowners who’ve found Johns Manville insulation, radiant barriers, or duct board in their attic and want to know whether it’s performing or leaking conditioned air into the Comal County heat. Call (830) 243-6352 for a free estimate.
How Johns Manville Products Fail - and How We Fix Them
- JM Spider blown-in fiberglass settles in New Braunfels attics with steep roof pitches, creating thin spots near the eaves where thermal bridging drops the effective R-value by 30% or more. We map the settled areas with thermal imaging, then supplement with new blown-in to restore the original design R-value after air sealing is complete.
- JM Linacoustic RC duct liner inside the plenum traps condensation when attic humidity spikes during our spring storm season; the fiberglass facing delaminates and sheds particles into the airstream. We inspect with a borescope, replace compromised sections with new Linacoustic or upgrade to a sealed duct board depending on the leakage test results.
- JM AP Foil-Faced polyiso board on knee walls and bonus room ceilings shrinks at the seams after five to seven years of New Braunfels temperature swings, pulling the foil facing away from the studs and creating convection loops. We re-secure with cap fasteners and seal the seams with foil tape rated for the temperature range, then verify with a smoke pencil.
- JM Formaldehyde-free batts in wall cavities slump when installed without proper friction fit, leaving gaps at the top plate that become express lanes for stack-effect air leakage in two-story homes off the River Road corridor. We pull electrical cover plates, inspect with a borescope, and re-install or dense-pack the cavity depending on what we find.
- JM Reflective radiant barrier products lose effectiveness when dust accumulation on the upward-facing surface hits roughly 10% coverage, which happens faster in New Braunfels than upstate because our caliche dust is finer and sticks to the aluminum oxide coating. We measure emissivity with a handheld meter and recommend cleaning or replacement based on the reading, not the calendar.
Our Johns Manville Home Energy Audit Process
- 1
Call and schedule. A live person answers 24/7. We ask the year built, square footage, and whether you’ve noticed hot rooms, high bills, or duct noise. You get a two-hour arrival window and a text when the tech is en route.
- 2
Exterior and attic inspection. We document Johns Manville product labels where visible, photograph installation condition, and note any signs of moisture staining, pest activity, or compression. The photo record starts here.
- 3
Blower-door test. We depressurize the house to -50 Pascals and record the CFM50 baseline. In New Braunfels homes built 1985-2005, we regularly see readings above 3,500 CFM50 - often from unsealed top plates and recessed can lights the original builder skipped.
- 4
Thermal imaging and duct leakage test. The infrared camera shows us where Johns Manville insulation has settled, compressed, or been bypassed by air leakage. The duct blaster quantifies how much conditioned air you’re losing to the attic.
- 5
Written scope and price. Before any work starts, you receive a flat price, written scope, and written warranty. Haven Standard Clause 1. No exceptions.
- 6
Air sealing first, then insulation. We seal all accessible leaks with fire-rated caulk, foam, and rigid blocking. We re-run the blower door. Then and only then do we add or replace Johns Manville insulation. You get the before-and-after CFM50 printout. The number on the blower-door printout tells you what the insulation did. Everything else is just talk.
Before
AfterWhat Johns Manville Home Energy Audit Costs in New Braunfels
| Service | Typical Range |
|---|---|
| Standard home energy audit (blower door, thermal imaging, insulation inspection) | $350 - $650 |
| Audit + duct leakage test | $550 - $850 |
| Audit + air sealing (typical 2,000 sq ft home) | $1,800 - $3,200 |
| Full attic re-insulation with Johns Manville Spider after sealing | $3,500 - $6,500 |
What moves the price: attic accessibility (scuttle vs. pull-down stairs), square footage, whether we need to remove existing insulation first, and how many penetrations require sealing. Homes in the older neighborhoods near downtown New Braunfels with original plaster-and-lath ceilings take longer to seal properly than newer drywall construction. Call (830) 243-6352 for your exact written price - estimates are free, and we offer a Free Second Opinion on any written estimate you’ve already received.
Why New Braunfels Homeowners Call Topside Attic Insulation New Braunfels for Johns Manville 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 we left. The 365-Day Done Right Promise applies to all completed work - if it’s not done right, we make it right. Our technicians are background-checked and uniformed; Wes Okafor trains each one personally on blower-door operation and Johns Manville product handling. We also service Reflectix and other major brands, so if your audit reveals a mixed-manufacturer attic, we don’t need to subcontract or delay. Materials come from Johns Manville, Owens Corning, Knauf, and others - no proprietary lock-in means we specify what performs, not what we’re obligated to move.
FAQs
No. Johns Manville’s product warranties cover manufacturing defects, not diagnostic testing. As an independent service provider, our audit documents the installed condition without altering the warranty terms. If we find a product defect during the audit, we flag it for your homeowner’s insurance or the original installer. Call (830) 243-6352 to schedule - estimates are free.
Most New Braunfels appointments are available within 48 hours, and same-day service is often possible for urgent cases like post-storm moisture intrusion or pre-sale inspections. We don’t use callback windows measured in business days. Call (830) 243-6352 to check today’s availability.
Repair is viable when the insulation is dry, uncompressed, and properly installed - we add air sealing and supplement thin areas. Replacement makes sense when the product is water-damaged, pest-contaminated, or installed before 2000 without a proper air barrier. Your audit includes a written recommendation with both options priced. Call (830) 243-6352 for a free estimate.
We source Johns Manville products directly when they’re the right specification for the job, but we also use Knauf, Owens Corning, Rockwool, and others when they perform better for your specific assembly. No proprietary lock-in means the material choice is driven by the blower-door and thermal imaging data, not by distributor obligations.
You receive a Documented Photo Record of all findings, the before-and-after blower-door readings in CFM50, a thermal imaging report with annotated images, and a written scope with flat pricing for any recommended work. Wes Okafor keeps copies filed by address, which has helped past New Braunfels homeowners when buyer’s inspectors asked questions during a sale.
Written by Wes Okafor, Owner, Topside Attic Insulation New Braunfels at Topside Attic Insulation New Braunfels, serving New Braunfels and nearby areas.