Johns Manville Home Energy Audit in Seguin: What to Know First
We provide independent Johns Manville home energy audit in Seguin, typically scheduling within 48 hours and completing the full diagnostic same-day. Most audits run between $280 and $550 depending on square footage and whether duct leakage testing is included, and we put that price in writing before anyone enters your home. This page is for Johns Manville owners in Seguin, New Braunfels, and the Hill Country edge who want to know why their energy bills climbed after installation or whether the original contractor sealed the envelope before insulating. Call (830) 549-6646 to schedule, or text us if that’s easier.
How Johns Manville Products Fail - and How We Fix Them
- JM Spider blown-in fiberglass settles in Seguin’s humidity cycles. The interlocking fiber design loosens when attic temperatures swing from 140°F summer peaks to 40°F winter nights, creating gaps above top plates. We pull the settled material, seal every penetration with fire-rated caulk and foam, then reinstall to manufacturer density.
- JM Climate Pro formaldehyde-free batts gap around irregular framing in pre-1990s Seguin homes. Without air sealing first, convection loops form behind the batt, rendering the R-value meaningless. We remove or work around existing batts, seal the sheathing joints and electrical boxes, then reinstall with proper compression fit.
- JM AP Foil-faced polyiso boards delaminate in vented attics with poor moisture control. The foil facing separates from the core when relative humidity spikes during our spring storm season, common in neighborhoods near the Guadalupe River. We test with a moisture meter, replace compromised boards, and verify the attic ventilation ratio before closing up.
- JM fiberglass duct liner sheds fibers when disturbed by rodent activity. In Seguin’s established areas near Guadalupe Regional Medical Center, we find this in roughly one of every three crawl space jobs. We document with photos, remove contaminated liner, seal the duct seams with mastic, and install new liner only after rodent proofing is complete.
- JM water heater blanket wraps installed without combustion air calculations. The foil-faced fiberglass blanket chokes gas-fired units in tight utility closets, a code violation we flag immediately. We measure the confined space, calculate required combustion air per IRC G2407, and modify or remove the blanket as needed.
Our Johns Manville Home Energy Audit Process
- 1
Call or text - a live person answers 24/7. We ask square footage, age of home, and what’s driving the audit: high bills, hot rooms, or a specific Johns Manville product concern.
- 2
Written price delivered before scheduling - flat fee for the audit scope you choose, with no add-ons discovered later. Haven Standard Clause 1: you see every dollar before we book the date.
- 3
Blower-door test on arrival - we depressurize the house to -50 Pascals and record CFM50, the single number that tells us how much conditioned air escapes through the envelope. For Johns Manville homes, we pay special attention to whether the insulation was installed over an unsealed attic floor, a shortcut that doubles the leakage we typically see in Seguin.
- 4
Thermal imaging and insulation inspection - our FLIR camera finds gaps the eye misses, particularly where JM Spider has settled or where Climate Pro batts were cut too short at the eaves. We photograph every finding.
- 5
Duct leakage test if selected - pressurize the duct system to 25 Pascals and measure leakage to outside. In Seguin’s older ranch homes, we regularly find 25-40% leakage, much of it at panned joist returns lined with JM fiberglass that has pulled away from the wood.
- 6
Written report with photos, blower-door numbers, and prioritized scope - you get the documented record before we leave. The report goes home with you - the numbers do the talking. If you hire us for the remediation, we run the blower-door test again and hand you the before-and-after comparison.
Before
AfterWhat Johns Manville Home Energy Audit Costs in Seguin
| Audit Component | Typical Range |
|---|---|
| Basic home energy audit (blower door + thermal imaging + insulation inspection) | $280 - $380 |
| Standard audit (basic + duct leakage test) | $380 - $480 |
| Comprehensive audit (standard + combustion safety + moisture mapping) | $480 - $550 |
| Follow-up blower-door verification after our remediation | Included |
What moves the price: home size above 3,500 square feet, multiple HVAC systems, crawl space access requiring full encapsulation assessment, or homes built before 1980 with original knob-and-tube wiring that limits where we can disturb insulation. We also service Reflectix radiant barrier systems, and our audit pricing is the same regardless of brand mix in your home. Call (830) 549-6646 for a written estimate - no visit required to name your price.
Why Seguin Homeowners Call Topside Attic Insulation Seguin for Johns Manville Work
We’re independently owned and operated, not a franchise, and we don’t carry proprietary product lock-in. Our materials come from Johns Manville, Owens Corning, Knauf, Rockwool, and others - we specify what performs, not what moves a distributor’s quarterly number. Wes Okafor learned thermal envelope science at Triton College in River Grove, IL, and has spent over two decades in the trade. His crew has sealed and insulated 9,000+ homes since 2016, every one with a written price first and a Documented Photo Record at completion. The 365-Day Done Right Promise applies to all work: if the blower-door number doesn’t hold, we return and make it right. Background-checked, uniformed technicians. Live person on the phone, always.
FAQs
No. Johns Manville’s product warranties cover manufacturing defects, not diagnostic work performed by an independent contractor. As an independent Johns Manville service provider, we document our findings without altering installed products in ways that would trigger warranty disputes. If we find a manufacturing issue during audit, we flag it for your claim and photo-document the defect. Call (830) 549-6646 if you need help navigating the warranty process.
Repair is cheaper when the material is dry, intact, and simply poorly installed - typically 40-60% less than full removal and replacement. Replacement becomes the better value when fiberglass is water-stained, rodent-contaminated, or settled below half its original depth, which we see frequently with JM Spider in Seguin’s vented attics. We give you both numbers in writing before you decide. Free estimates: (830) 549-6646.
We typically schedule within 48 hours and complete the audit in 2-4 hours depending on home size. Same-week availability is common except during peak summer demand in July and August. Emergency audits for suspected combustion safety issues are prioritized. Text or call (830) 549-6646 to check this week’s openings.
We use Johns Manville materials when they are the right specification for the repair, and quality aftermarket equivalents when they match or exceed the thermal performance at lower cost. We never substitute without writing the alternative into your scope and explaining the trade-off. No proprietary lock-in means you get what performs, not what a brand mandates.
You receive a printed report with blower-door CFM50 and ACH50 readings, thermal images with temperature annotations, photos of every insulation defect found, a written scope of recommended work with flat pricing, and a copy of our warranty terms. On remediation jobs, the before-and-after blower-door comparison is included. Everything is dated and signed by the technician who performed the work.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Seguin at Topside Attic Insulation Seguin, serving Seguin and nearby areas.