Johns Manville Insulation Removal & Replacement in Westminster: What to Know First
We provide independent Johns Manville insulation removal and replacement in Westminster, typically completing attic jobs in one to two days with a written price delivered before any work starts. Most Westminster homes with aging Johns Manville batts or blown-in fiberglass need removal first - the old material has compressed, been compromised by roof leaks, or accumulated rodent activity - and we replace with current Johns Manville or compatible materials only after sealing every bypass. Call (562) 526-6978 for a free estimate with a written scope.
This page is for Westminster homeowners who can identify Johns Manville insulation in their attic, need it removed safely, and want replacement done without the shortcuts that waste the new material’s performance. We’re not affiliated with or authorized by Johns Manville - we’re an independent service provider who works on what Westminster homes actually contain.
How Johns Manville Products Fail - and How We Fix Them
- TempControl batts compressed below labeled R-value. The pink formaldehyde-free batts Johns Manville shipped through the 2000s and early 2010s settle significantly in Westminster’s warm-dry climate, especially under foot traffic from HVAC technicians or homeowners using the attic for storage. We’ve pulled TempControl batts that tested at R-11 when the bag promised R-30. We remove the compressed material entirely and replace with blown-in fiberglass that can’t be walked flat.
- Climate Pro loose-fill fiberglass stratified by roof leaks. Climate Pro blown-in product clumps and loses loft where slow leaks from Westminster’s occasional heavy winter rains saturate the top layer. The bottom stays dry, the top mats down, and the homeowner sees uneven temperatures across rooms. We remove the contaminated layer, trace the leak path, seal it, then blow new material to a uniform settled depth measured with a yardstick and photographed.
- Spider custom-fit system gaps at irregular framing. Johns Manville’s Spider system - blown fiberglass with an adhesive binder meant to stick in wall cavities - often misses pockets in older Westminster tract homes with non-standard stud spacing or fire blocking. The gaps act as thermal bypasses. We remove failed Spider where accessible, seal the cavity with two-part foam at top plates and penetrations, then dense-pack with compatible blown fiberglass.
- Sound & Fire batts degraded by rodent nesting. The denser, darker Sound & Fire batts installed in garage ceilings and partition walls attract rodents seeking nesting material; we’ve found them shredded in Westminster’s older Little Saigon-area homes near the mall. We remove contaminated batts, rodent-proof with wire mesh at entry points, then replace with fresh material after a documented photo record of the sealed pathways.
- Pre-2010 formaldehyde-based batts off-gassing after disturbance. Older Johns Manville batts manufactured before the widespread shift to formaldehyde-free binders can release residual compounds when disturbed during renovation or removal. Westminster’s tight, energy-efficient homes from the 1980s and 1990s trap these compounds. We use HEPA-contained removal, negative air pressure during extraction, and replace with current formaldehyde-free product.
Our Johns Manville Insulation Removal & Replacement Process

- 1
Call and scheduling. A live person answers 24/7. We book a site visit in Westminster, usually within 48 hours. You receive a text when the technician is en route.
- 2
Attic inspection and blower-door baseline. We identify your Johns Manville product line, measure settled depth, photograph condition, and run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing. Wes Okafor still keeps his original blower-door test sheets from Kennedy-King College in a binder on his truck; the current digital readings go straight to your file.
- 3
Written price and scope. We deliver a flat price, written scope, and written warranty before anyone lifts a tool. This is Haven Standard Clause 1. No work starts without it.
- 4
Air sealing before removal. Seal the bypasses first. The R-value on the bag is only real if the air has nowhere else to go. We seal top plates, can lights, plumbing penetrations, and chimney chases with two-part foam and fire-rated caulk.
- 5
Contained removal and disposal. HEPA filtration, negative air pressure, bagged removal of old Johns Manville material. Contaminated insulation goes to licensed waste facilities; clean recyclable fiberglass is processed separately.
- 6
Replacement, depth verification, and final blower-door test. New Johns Manville or compatible material installed to specified depth, measured with a yardstick, photographed, and documented. Final blower-door reading compared to baseline. You keep the photo record and both numbers.
Before
AfterWhat Johns Manville Insulation Removal & Replacement Costs in Westminster
Most attic insulation removal and replacement jobs in Westminster homes run between $2,800 and $5,400. The variables that move the price:
- Attic square footage and accessibility - tight truss bays or low-clearance crawl attics add labor hours
- Contamination level - rodent droppings or moisture damage require HEPA-contained removal at higher disposal cost
- Air-sealing complexity - multiple can lights, balloon framing, or extensive top-plate bypasses
- Material choice - standard Johns Manville blown fiberglass versus higher-density options or hybrid spray-foam assemblies
We also provide free second opinions on any written estimate you’ve already received. Bring us a competing quote and we’ll read it with you. Call (562) 526-6978 for an exact quote - estimates are free, and the written price comes before any work starts.
Why Westminster Homeowners Call Topside Attic Insulation Westminster for Johns Manville Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. The 365-Day Done Right Promise applies to all completed work - if it’s not done right, we make it right, backed by the written scope and warranty you received upfront.
Our technicians are background-checked and uniformed; calls are answered by a live person, 24/7, no voicemail loops. We work with Johns Manville, Owens Corning, Knauf, Rockwool, CertainTeed, and other major brands - no proprietary lock-in means we specify what’s right for your home, not what moves a particular product line. We also service Reflectix radiant barrier systems where they’re part of the existing assembly.
Wes Okafor’s crews have worked extensively around Westminster Mall and the neighborhoods south of the 405 - the area’s mix of 1960s ranch homes, 1980s two-stories, and newer construction means we’ve seen most Johns Manville installation eras and failure patterns found in this market.
FAQs
Johns Manville’s product warranties cover manufacturing defects, not installation or subsequent removal by independent contractors. As an independent Johns Manville service provider, we document the condition of existing material with photos before removal, which protects you if a defect claim arises later. If you believe your original installation included a contractor workmanship warranty, we can review those terms with you during the estimate. Call (562) 526-6978 to schedule.
We source current Johns Manville lines - Climate Pro, TempControl, and Spider systems - through standard distribution channels. Some older product formulations have been discontinued; when exact replacement isn’t available, we specify the closest current equivalent with equivalent or improved R-value and explain the difference in your written scope. Call (562) 526-6978 for an exact quote - estimates are free.
Spot repair is rarely cost-effective for attic insulation. Compressed, contaminated, or moisture-damaged fiberglass loses structural integrity; patching over it leaves thermal bridges and often traps moisture against the original failure point. Most Westminster homeowners find full removal and replacement returns better comfort and lower energy bills. We price both approaches when asked, but our recommendation comes with the blower-door numbers to support it. Call (562) 526-6978 for an exact quote - estimates are free.
Most Westminster attic jobs finish in one to two days: half day for contained removal and air sealing, half day for replacement and verification. Larger homes or jobs requiring extensive rodent proofing may extend to three days. We schedule start dates within one to two weeks of estimate approval, and you’ll receive a text when the crew is en route. Call (562) 526-6978 to check current availability.
We publish before-and-after blower-door readings on every job where air sealing is part of the scope - which is every removal and replacement we perform. The pressurization measurement, expressed in CFM50 (cubic feet per minute at 50 pascals of pressure), shows exactly how much conditioned air your home was losing before and after our work. You receive both numbers in your documented photo record. Call (562) 526-6978 for an exact quote - estimates are free.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Westminster at Topside Attic Insulation Westminster, serving Westminster and nearby areas.