Johns Manville Insulation Removal in Los Angeles: What to Know First
Johns Manville insulation removal in Los Angeles typically takes one to two days for a standard attic, and most jobs run between $1,400 and $4,800 depending on square footage, material type, and what’s underneath it. We’re an independent Johns Manville service provider, not a manufacturer-authorized dealer, which means we tell you the truth about what’s actually wrong and what it costs to fix. If you own a home with Johns Manville fiberglass batts, blown-in, or spray foam that’s failed, contaminated, or just performing badly, call (213) 698-7067 for a free estimate and a written price before anything starts.
This page is for Los Angeles homeowners who already know they have Johns Manville insulation and need it removed. Maybe it’s water-damaged after a roof leak. Maybe rodents got into it. Maybe it was installed badly in the first place. Whatever the reason, we’ll walk you through what’s involved, what it costs, and how we handle the brand’s specific quirks so you’re not surprised by anything except how straightforward the process is.
How Johns Manville Products Fail – and How We Fix Them
Johns Manville makes decent insulation, but every material has a failure point. Here’s what we see most often in Los Angeles homes, and what we do about it:
- MR® Faced Batts losing their facing integrity. The kraft paper vapor retarder on Johns Manville MR® faced batts starts peeling, tearing, or delaminating after years of attic heat cycling, especially in LA summers where attic temps regularly hit 140 degrees. The fiberglass underneath stays intact but the facing sags and the batt loses its air-sealing job. Fix: full removal, air sealing, and reinstall with new material you can plan around.
- ComfortTherm® batts holding moisture after a leak. ComfortTherm® is wrapped in plastic, which is great for itch-free handling but terrible when water gets behind it. Once moisture gets in, it can’t dry out because the wrap traps it, leading to mold inside the batt. We’ve pulled ComfortTherm® out of attics in Echo Park and Silverlake where the visible surface looked fine but the interior was soaked. Fix: complete extraction and inspection of the decking beneath before new insulation goes in.
- Blown-in fiberglass settling and losing R-value. Johns Manville blowing wool is light, fluffy, and performs well on day one, but it settles. In a Los Angeles attic, ten years of seasonal expansion and contraction can compress it enough to drop effective R-value by 10 to 15 percent. Fix: removal with commercial-grade vacuum equipment, then re-blow to the code-required depth for your zone.
- Spray foam that was never right in the first place. Johns Manville’s open-cell spray foam (JM Corbond® IV) is a quality product, but we regularly see DIY or low-bid installations where off-ratio mixing, bad passes, or incomplete coverage left voids and brittle spots. Once foam is cured wrong, you don’t patch it. You remove and start clean.
- Older JM batts degrading around recessed light fixtures and vents. Around old can lights and bath fan housings, heat exposure bakes the fiberglass hard and crumbly. It stops insulating and starts shedding fine glass particles into the air. Removal, replacing the fixture or adding proper clearance, and installing fresh material is the correct fix.
Chase Whitaker has been pulling Johns Manville products out of LA attics for going on fifteen years, and the pattern is consistent: the insulation itself rarely fails for no reason. There’s usually water, pests, bad installation, or decades of heat making the failure happen. We find that cause and fix it before anything new goes in.
Our Johns Manville Insulation Removal Process
- 1
Call and schedule. You call (213) 698-7067, talk to a live person, and book a time. You get a live arrival tracking link, not a four-hour window. Free estimate, written price before work starts.
- 2
Attic inspection and diagnostics. We get up there, measure, take photos, and identify the exact Johns Manville material, its condition, and what caused the failure. We also check for air leaks, pest entry points, and moisture sources that will sabotage whatever goes in next.
- 3
Material decision. If the JM material is salvageable, we tell you and save you money. If it needs to go, we explain why in plain language. No upsell games.
- 4
Removal. We use HEPA-filtered commercial vacuums for blown-in and loose material, hand-remove batts and foam, and bag everything for disposal. We protect your living space with containment where needed. You’ll see before-and-after photos as the job progresses.
- 5
Clean and prep. After removal, we clean the attic floor, address any mold, droppings, or decking damage, and air seal the key points: top plates, wire penetrations, plumbing stacks, can light surrounds.
- 6
Reinsulate and verify. New material (Owens Corning, Rockwool, Knauf, or another of the eight brands we carry) goes in to proper depth and R-value. Then we verify coverage, send you photo proof, and hand you the written 365-Day Done Right Promise. If it’s not right within a year, we come back and make it right. Free.
What Johns Manville Insulation Removal Costs in Los Angeles
Here’s the straight answer, because you should know before you call. Pricing ranges depend on attic size, material type, and access conditions.
| Scope | Typical Los Angeles Price Range |
|---|---|
| Blown-in fiberglass removal (up to 1,200 sq ft attic) | $1,400 – $2,600 |
| Batt removal, full attic (up to 1,500 sq ft) | $1,800 – $3,200 |
| Water-damaged or contaminated material removal | $2,400 – $4,800 (includes sanitization) |
| Spray foam removal (partial, up to 400 sq ft) | $2,000 – $4,000 |
| Full removal plus new insulation install | $3,500 – $8,000+ |
What moves the price: attic headroom and access, number of obstacles (ductwork, trusses, stored items), contamination level, and whether you’re reinsulating at the same time (most people do, and it’s more cost-effective than doing them separately). We never change the number at the door. You get a written price before work starts, every time. Call (213) 698-7067 for an exact quote.
Why Los Angeles Homeowners Call Laurel Attic Insulation Los Angeles for Johns Manville Work
First, because we actually know Johns Manville products. We can look at a failed batt, name the specific line, and tell you why it failed. Second, because we put everything in writing: written price before work starts, written 365-Day Done Right Promise after the job, and a free second visit if something fails within the year. No argument, no charge. Third, because the experience feels like a modern service call should: book in a tap, get a live arrival time, receive photo proof of every step, and pay from a link when you’re satisfied. We also carry seven other manufacturer brands, so if Johns Manville isn’t the best material for the reinstall, we’ll say so and match the right product to the job. We service Reflectix products too, though removal of foil-type products is less common.
The name matters here. Laurel stays green all year, and your home’s comfort should too. That’s the idea behind the name, and it shows in how we treat Johns Manville removal jobs: not as a commodity, but as the first step toward an attic that actually works for your house.
FAQs
Adding on top is cheaper short-term but wrong if the existing material is wet, contaminated, or compressed. You trap the problem under new insulation and degrade both layers. If the JM material is dry and structurally sound, topping off can work. If it’s not, removal is the honest fix. Call (213) 698-7067 and we’ll tell you which applies to your attic.
No, removing insulation does not void a Johns Manville product warranty because insulation warranties typically cover manufacturing defects, not installation or removal. As an independent Johns Manville service provider, we can’t speak for the manufacturer’s specific terms, but removal itself isn’t a warranty-triggering event. We’ll document the condition before removal so you have a record if you ever file a claim.
Most standard attics are removed in one to two days. Larger attics, spray foam, or heavy contamination add time. We schedule with a live arrival time, and you’ll get before-and-after photos the same day. If your situation is urgent (a leak, a pest problem), tell us when you call (213) 698-7067 and we’ll work with your timeline.
We don’t recommend it. Spray foam removal requires mechanical cutting, scraping, and sometimes grinding, and doing it wrong can damage roof decking, wiring, or your lungs if proper PPE isn’t used. This is a job for a trained professional with the right equipment. We’ll do it cleanly and safely, and we’ll show you the before-and-after photos to prove it.
We do both. Most Los Angeles homeowners want the full fix: remove the failed Johns Manville material, air seal the attic, and install new insulation matched to the house. If you only want removal and plan to handle reinsulation yourself, we’ll do that too and leave the attic clean and ready. Call (213) 698-7067 for a free estimate either way.
Written by Chase Whitaker, Owner, Laurel Attic Insulation Los Angeles at Laurel Attic Insulation Los Angeles, serving Los Angeles and nearby areas.