Johns Manville Insulation Removal & Replacement in Pasadena: What to Know First
Johns Manville insulation removal and replacement in Pasadena typically runs $1,800 to $5,500 depending on attic size, insulation type, and whether we’re dealing with contamination, moisture damage, or simple age-related breakdown. Most jobs take one to two days, and we haul everything away. That’s the honest range: we price by square footage and condition, not by what we think you’ll pay. This page is for Pasadena homeowners with Johns Manville fiberglass batts, blown-in loose fill, or spray foam that’s failed, settled, or been damaged by rodents, water, or fire. If that sounds like your house, call (626) 606-2964 and a live person answers, day or night.
How Johns Manville Products Fail - and How We Fix Them
Johns Manville made a lot of insulation that ended up in Pasadena attics and walls over the decades. Here’s what we actually see when we open up a ceiling or crawl space:
- JM ComfortTherm batts with rotted kraft facing. The paper vapor barrier on older ComfortTherm rolls breaks down after 20-plus years in a vented Pasadena attic. Once that facing separates, the batts slump and leave bare spots. We pull it all, air-seal the attic floor, and blow in new JM Climate Pro or Rockwool depending on your budget.
- JM Attic Protector blown-in fiberglass that settled to half its R-value. Attic Protector was popular in 1990s and early 2000s remodels around Pasadena. It settles, especially if someone walked through the attic over the years. We see R-30 attics measuring R-12 at the eaves. Removal is straightforward: industrial vacuum, bagging, and disposal before we re-blow to code.
- JM Spider spray-applied fiberglass that never cured right. Spider was a spray-in-place fiberglass system installed in some Pasadena new builds. If the installer mixed it wrong or the substrate was damp, it clumps and drops out of the wall cavities. We cut access, remove the failed material, and typically replace with blown-in cellulose or foam depending on the wall assembly.
- Rodent-contaminated JM loose fill. Rats and mice love tunneling through blown insulation. In Pasadena foothill neighborhoods near the Arroyo, we see this constantly. Once there’s nesting and droppings mixed in, the only safe fix is full removal, sanitizing, and replacement. We handle rodent proofing at the same time so you’re not doing this twice.
- JM IntelloPlus or MemBrain vapor barriers installed on the wrong side of the assembly. In older Pasadena homes where someone retrofitted walls, we occasionally find smart vapor barriers placed incorrectly, trapping moisture in the cavity. That leads to moldy insulation and musty smells. We remove the insulation, correct the barrier placement, and install new product with proper drying potential.
Our Johns Manville Insulation Removal & Replacement Process
Here’s how a typical Johns Manville removal job goes when you call us in Pasadena:
- 1
We show up and actually look. We inspect the attic or wall, measure square footage, check insulation depth, and look for moisture, mold, rodent sign, or electrical issues. Free estimate, no pressure.
- 2
We give you a written price before work starts. No vague verbal numbers. You’ll know exactly what’s being removed, what’s going in, and what it costs.
- 3
We remove the old Johns Manville material with commercial HEPA-filtered vacuums. No spreading dust through your house. We contain the work area, and we bag everything before it leaves your property.
- 4
We treat the underlying problem. If there’s moisture, we find the source. If there are rodents, we seal entry points. If there’s air leakage, we air-seal. Insulation only works when the root cause is handled.
- 5
We install the replacement and test it. We check coverage depth, density, and R-value before we call it done.
- 6
We walk you through what we did and leave the space cleaner than we found it. Then the Done Right Promise kicks in: if it’s not right, we come back and make it right. No argument, no runaround.
What Johns Manville Insulation Removal & Replacement Costs in Pasadena
The price depends on three things: how much material is up there, what kind it is, and what we find underneath. Here are realistic ranges for Pasadena homes:
- Attic batt removal and replacement (1,000-1,500 sq ft): $1,800 – $3,200
- Blown-in fiberglass or cellulose removal and re-blow (same size): $2,200 – $4,100
- Rodent-contaminated insulation removal with sanitizing: $3,000 – $5,500 depending on attic size and infestation level
- Spray foam removal from walls or roof deck: $4,000 – $8,000+ depending on access difficulty
What moves the price: attic height and access, how much electrical or plumbing work we have to work around, whether there’s mold, and how far we have to haul the debris. We’ll give you an exact number before we touch anything. Call (626) 606-2964 for a free estimate.
Why Pasadena Homeowners Call Walt’s Insulation for Johns Manville Work
We’ve been the one down the road since 2000. I’m Walt Brenner, and I grew up in San Antonio, Texas, where a 105-degree summer teaches you real fast what bad insulation costs you. I’ve been in this trade since then, and my crew has pulled failed Johns Manville out of century-old bungalows near the Rose Bowl and brand-new builds up in Altadena. We’re an independent Johns Manville service provider: we’re not factory-authorized, and we don’t need to be. We tell you what your house actually needs, whether that’s more Johns Manville product or something else from Owens Corning, Rockwool, or Reflectix. Our techs are background-checked, uniformed, and trained on brand-specific failure patterns. And we answer the phone live because your house doesn’t keep business hours - and neither do we.
FAQs
No. Johns Manville warranties apply to the product’s performance, not to removal. If the insulation has failed due to settling, moisture, or contamination, removing and replacing it doesn’t affect any remaining warranty on the new product you install. We can walk you through warranty documentation during the estimate.
Most residential attics take one day for removal and one day for reinstallation. Small jobs can sometimes finish same-day. Emergency situations like water damage or animal contamination we can usually schedule within 48 hours. Call (626) 606-2964 and we’ll give you a firm timeline.
Sometimes, but it’s usually a mistake. If the old material is dry, mold-free, and hasn’t settled into a mat, topping it off can work. If it’s rodent-contaminated or water-damaged, adding more just buries the problem and makes the eventual removal more expensive. We’ll tell you straight what your attic actually needs, even if it means a smaller invoice.
We don’t just match it, we usually exceed it. Original 1990s Pasadena builds typically had R-19 to R-30 in the attic. Current code and better materials let us hit R-38 to R-49 without much extra cost. You’ll see the difference on your energy bill the first summer.
Yes. We bag everything on site and haul it away. We don’t leave debris in your yard or expect you to figure out disposal. It’s included in the price we quote.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving Pasadena and nearby areas.