Johns Manville Attic Cleaning & Rodent Proofing in Pflugerville: What to Know First
We provide independent Johns Manville attic cleaning and rodent proofing in Pflugerville, typically completing most jobs in one to two days with a written price delivered before any work starts. Most attic cleanouts with rodent exclusion for Johns Manville-insulated homes in the Pflugerville area run between $1,800 and $4,200 depending on contamination level, accessibility, and whether the JM insulation can be salvaged or needs full removal. This page is for homeowners who found droppings, nesting material, or compressed JM batts in their attic and need a crew that understands how Johns Manville products handle - and don’t handle - Central Texas rodent activity. Call (737) 259-8352 for a free estimate with a written scope.
How Johns Manville Products Fail - and How We Fix Them
- JM Spider Plus blown-in fiberglass packs down under rodent trails. The Spider Plus line uses an adhesive-delivery system that holds loft well in normal conditions, but repeated rodent traffic through attic valleys - common in Pflugerville’s older Stone Hill sections - compresses it into hard pathways that lose R-value. We remove the packed material, sanitize the substrate, and reinstall only after sealing entry points.
- JM Formaldehyde-free batts absorb urine and hold odor. The formaldehyde-free binder in JM’s unfaced batts is gentler on installers but more porous to rodent urine than denser mineral wool alternatives. Once saturated, the batt acts as a wick; surface cleaning won’t reach the core. We pull affected batts, HEPA-vacuum the bays, and apply an enzyme treatment before deciding on replacement material.
- JM Kraft-faced batts delaminate in high-humidity attics. Pflugerville’s spring humidity spikes and poor vented attic airflow cause the kraft paper facing to separate from the fiberglass core, creating gaps where rodents nest between layers. We see this most in homes near Lake Pflugerville with original ridge-vent-only designs. The fix is removal, air-sealing the top plates properly, then deciding on new insulation strategy.
- JM Microlite XG loses integrity at chewed edges. This high-loft product frays when rodents gnaw entry holes through it, sending loose fibers into HVAC returns below. Unlike denser batts, the frayed edges don’t hold together for spot repair. We map the HVAC penetration paths, remove contaminated Microlite, and install wire mesh barriers at chase openings before reinsulating.
- JM poly-encapsulated duct wrap gets torn for nesting material. Rodents specifically target the white poly facing on JM duct wrap for shredding into nests - it’s soft, tears clean, and holds shape. The underlying fiberglass then sags off the duct. We remove the damaged wrap, clean and seal the duct seams, then reinstall with proper mechanical fasteners and rodent guards.
Our Johns Manville Attic Cleaning & Rodent Proofing Process

- 1
Inspection with photo documentation. We enter the attic, identify the JM product line installed, map contamination zones, and photograph every finding. You get these photos in your written scope.
- 2
Blower-door test if air sealing is involved. On jobs where we’re restoring insulation after cleanup, we run a blower-door test - a pressurization measurement that shows, in one number, how much air your building envelope is losing - so we have a baseline before any sealing work.
- 3
Written price before any work starts. We specify exactly what comes out, what gets sanitized, what gets sealed, and what goes back in. No work begins until you have this in writing.
- 4
Contained removal and HEPA cleanup. We negative-air the attic space, remove contaminated JM material into sealed bags, and HEPA-vacuum all surfaces. Enzyme treatment follows on wood substrates.
- 5
Rodent proofing and exclusion. We seal all entry points with appropriate materials - steel mesh for gnaw points, foam for gaps, metal flashing for roof junctions - then reinsulate with your choice of JM or compatible product, documenting the finished condition.
- 6
Post-job report delivery. You receive a Documented Photo Record of the completed work, plus before-and-after blower-door numbers on applicable jobs. The report tells you what the house does. The insulation changes what the house does. Those are two different conversations.
Before
AfterWhat Johns Manville Attic Cleaning & Rodent Proofing Costs in Pflugerville
| Scenario | Typical Range |
|---|---|
| Light cleanout + spot sanitizing, JM insulation salvageable | $1,800 - $2,600 |
| Moderate contamination, partial JM removal, rodent exclusion | $2,600 - $3,400 |
| Heavy contamination, full JM removal, full sanitizing, reinsulation | $3,400 - $4,200+ |
| JM duct wrap replacement + rodent guards | $800 - $1,500 per system |
What moves the price: attic square footage, depth of existing JM insulation, whether the joist bays are walkable or require plank decking, extent of HVAC contamination, and whether we find active leaks that must be sealed before reinsulating. We also service Reflectix radiant barrier systems when they’re part of the same attic assembly. Call (737) 259-8352 for a written estimate - the price you get is the price you pay.
Why Pflugerville Homeowners Call Topside Attic Insulation Pflugerville for Johns Manville Work

We’ve been in attics throughout Pflugerville’s Stone Hill Town Center corridor often enough that the regional heat load patterns and common builder shortcuts are not a surprise to us. Wes Okafor trained in building systems technology at Kennedy-King College on Chicago’s south side, where the emphasis was on air-sealing fundamentals - the idea that blown-in insulation is only half the job if the can lights and top plates are still leaking. We don’t blow new JM over unsealed attics. We publish before-and-after blower-door numbers on every applicable job. Our 365-Day Done Right Promise means if it’s not right, we make it right. Calls are answered by a live person, 24/7. Background-checked, uniformed technicians. Written price before any work starts, always.
FAQs
No - proper cleaning and restoration by an independent service provider does not void Johns Manville’s product warranty, which covers manufacturing defects, not installation or environmental damage. The warranty was already limited to material defects; contamination and rodent damage fall outside it regardless of who cleans the attic. If your JM insulation is relatively new and uncontaminated, we document its condition before touching it so any future warranty claim has a clear baseline. Call (737) 259-8352 and we’ll review your specific installation.
We source JM Spider, Microlite, and formaldehyde-free batts through standard distribution channels - we are not a factory-authorized dealer, but we are an independent Johns Manville service provider with access to the same product lines. We also install Owens Corning, Knauf, Rockwool, CertainTeed, and other brands if you prefer a different material after cleanup. No proprietary lock-in.
If the insulation is compressed but not urine-saturated, we can often fluff and supplement it after sealing entry points. If the formaldehyde-free binder has absorbed rodent urine - you’ll smell it, or we’ll show you the staining on the photos - removal is the only fix that doesn’t leave odor behind. We make this call during inspection and put the reasoning in your written scope before you decide.
We typically schedule inspections within 24 to 48 hours for Pflugerville addresses, with most cleanout jobs starting within a week of estimate approval. Emergency situations - active rodent entry, HVAC contamination, or accessible electrical hazard - get priority scheduling. Call (737) 259-8352; a live person answers.
No - blowing new insulation over rodent-contaminated material traps odor, preserves active entry paths, and often violates municipal code for occupancy. Pflugerville’s building standards require removal of biologically contaminated insulation before reinsulating. The “cheaper” shortcut costs more when you have to tear everything out two years later. We price both approaches in writing so you can see the real numbers.
Written by Wes Okafor, Owner, Topside Attic Insulation Pflugerville at Topside Attic Insulation Pflugerville, serving Pflugerville and nearby areas.