Johns Manville Insulation Removal & Replacement in Leander: What to Know First
We provide independent Johns Manville insulation removal and replacement in Leander, with most attic jobs completed in one day and a written price delivered before any work starts. Our crews handle everything from standard JM fiberglass batts to vermiculite-contaminated installs, and we publish before-and-after blower-door numbers on every applicable job so you can verify the result in CFM50. If you own a Leander home built between 2005 and 2018, there’s a strong chance your attic contains Johns Manville Climate Pro, TempControl, or formaldehyde-free batts - and if you’re here, something has gone wrong. Call (737) 252-7159 for a free estimate and a written scope before anyone lifts a tool.
How Johns Manville Products Fail - and How We Fix Them
- Climate Pro loose-fill settling below labeled R-value. We see this in Crystal Falls and Travisso attics where blown-in JM Climate Pro has compressed to 8-10 inches from an original 14-inch install, dropping effective R-value from R-38 to roughly R-25. The product itself is sound; the original contractor skipped density verification. We remove the settled material, seal top plates and can-light penetrations first, then reinstall to a calibrated ruler-card depth with density-checked blowing.
- TempControl batts degraded by Leander’s 140°F July attic peaks. JM’s TempControl line uses a temperature-sensitive acrylic binder that can off-gas and lose dimensional stability after sustained exposure above 130°F. In Leander’s west-facing attics, we’ve pulled TempControl batts that have shrunk away from studs by 2-3 inches. We remove the compromised batts, air-seal the thermal bypasses that caused the overheating, then replace with material suited to the actual attic conditions.
- Formaldehyde-free batts holding moisture from roof leaks. JM’s formaldehyde-free fiberglass uses a plant-based binder that is more hygroscopic than traditional phenolic binders. When a Leander home has a slow ridge vent leak or AC condensate drip, these batts wick and hold moisture, creating a musty attic and compressed R-value. We remove the wet material, photograph the water trail for your roofer or HVAC contractor, dry the deck, then replace with new insulation only after the source is fixed.
- Vermiculite-era JM products with asbestos cross-contamination risk. Johns Manville sourced vermiculite from Libby, Montana through the early 1990s. In older Leander homes near Old Town, we’ve found JM-branded vermiculite under newer fiberglass layers. We treat all suspect material as hazardous, use HEPA-contained removal, and provide documentation for your records. This is not a DIY job; the fibers are friable and the EPA notification requirements are specific.
- Sound & Fire batts installed without proper cavity air sealing. JM Sound & Fire Control batts perform as advertised when the cavity is sealed first. We’ve found them stuffed into unsealed band joists and partition walls in Leander’s newer builds, where air whistles past and the acoustic rating is meaningless. We pull the batts, seal with fire-rated caulk and foam, then reinstall to manufacturer compression specs.
Our Johns Manville Insulation Removal & Replacement Process

- 1
Call and schedule. A live person answers at (737) 252-7159 24/7. We book a site visit, and under Haven Standard Clause 1, you get a named technician and a text when they’re en route.
- 2
Attic inspection and blower-door baseline. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing. We identify your specific Johns Manville product line, its condition, and what’s causing the failure. You get a Documented Photo Record of what we found.
- 3
Written price and scope. Before any work starts, you receive a flat price, written scope, and written warranty. Free Second Opinion on any competing written estimate if you want one.
- 4
Air sealing first, then removal. Seal the envelope first. Then fill it. We seal top plates, wire and pipe penetrations, can lights, and chimney chases before touching the old insulation. Then we remove the failed Johns Manville material with HEPA containment where needed.
- 5
Replacement with verified install. We install replacement insulation - Johns Manville, Owens Corning, Knauf, Rockwool, or another specified material - to depth verified with a calibrated ruler card on every joist bay. No proprietary lock-in; we source from eight manufacturers.
- 6
Blower-door verification and documentation. On applicable jobs, we run the blower door again and hand you the before-and-after numbers. You leave with a written report, photo record, and our 365-Day Done Right Promise: if it’s not done right, we make it right.
Before
AfterWhat Johns Manville Insulation Removal & Replacement Costs in Leander
Most attic insulation removal and replacement jobs in Leander run between $2,400 and $5,800, with the final number depending on four factors we measure on every visit:
- Attic square footage and accessibility. A 1,200 sq ft attic with a standard scuttle hatch runs lower; a 3,000 sq ft attic with a 14-inch framed access we have to cut open runs higher.
- Contamination level. Standard fiberglass removal with HEPA vacuuming is straightforward. Vermiculite or rodent-contaminated material requires full containment, disposal documentation, and EPA-compliant handling - typically adding $1,800-$3,400.
- Air-sealing scope. A Leander home with unsealed top plates, recessed can lights, and a leaky chase can need 4-8 hours of sealing before new insulation goes in. We do this work; we do not skip it.
- Replacement material and R-value target. Blown fiberglass to R-38 costs less than spray foam to R-49 or a hybrid assembly. We price each option in writing so you compare apples to apples.
Call (737) 252-7159 for an exact quote. Estimates are free, and the price we write is the price you pay.
Why Leander Homeowners Call Topside Attic Insulation Leander for Johns Manville Work

We’ve sealed and insulated over 9,000 homes since 2016, and the Leander jobs stick with us - the attic hatches cut too small, the radiant barriers stapled directly over dirty fiberglass by a previous contractor who was done by lunch. Wes Okafor learned this trade at Triton College in River Grove, Illinois, where blower-door diagnostics and air-sealing sequencing came before any blowing machine training. That sequencing shows up in every Johns Manville job we touch: sealed first, insulated second, verified with a number you can read. We also service Reflectix and other brands, so if your home has mixed materials or you want to compare performance claims, we can speak to all of them without pushing one proprietary product. Live person answers the phone 24/7. Written price before work starts. Documented record when we leave.
FAQs
Johns Manville’s product warranty covers manufacturing defects, not installation issues, and it does not restrict removal by an independent contractor. The warranty was likely voided years ago by the original installation error - settling, moisture intrusion, or compression - that brought you here. We document the product condition and install cause before removal so you have a record. Call (737) 252-7159 for a free inspection and written scope.
We can source current Johns Manville lines including Climate Pro, TempControl, and formaldehyde-free batts, but exact batch matching on aged material is rarely necessary or advisable. The failed product already proved it was the wrong choice for your specific attic conditions. We select replacement material based on measured attic temperature, moisture history, and your target R-value - not brand loyalty. Call for a free estimate and we’ll show you the options in writing.
Spot repair is cheaper upfront but usually wastes money. We’ve opened Leander attics where a previous contractor “fluffed” settled Climate Pro or patched wet batts with new material over unsealed leaks; the problem returned in 18-24 months. Removal and proper replacement, with air sealing first, costs more once but performs for the life of the home. We price both approaches honestly so you can compare real numbers. Call (737) 252-7159 for a written quote on each.
Most standard attic jobs are completed in one day. Contaminated material or large square footage may extend to two days. We do not schedule work we cannot finish properly; if your job needs two days, we tell you before we start. Same-week scheduling is usually available. Call (737) 252-7159 to check current openings.
For standard fiberglass removal, no - we contain the work zone with plastic isolation and HEPA negative air if needed, and you can remain in the living space. For vermiculite or heavy rodent contamination, we recommend vacating for the removal day and provide specific re-entry timing based on clearance sampling. We tell you which category your job falls into at the estimate, never after work starts. Call for a free assessment.
Ready to get your Leander attic fixed right? Call (737) 252-7159 now. A live person will answer, schedule your free estimate, and you’ll have a written price before any work starts - guaranteed under Haven Standard Clause 1.
Written by Wes Okafor, Owner, Topside Attic Insulation Leander at Topside Attic Insulation Leander, serving Leander and nearby areas.