Johns Manville Blown-In Insulation in Burbank: What to Know First
We provide independent Johns Manville blown-in insulation service in Burbank - top-ups, full attic blow-ins, dense-pack wall work, and removal of degraded material. Most jobs are quoted upfront and completed in a single visit, and we answer the phone with a live person 24/7 at (747) 837-5834. Blown-in work on a typical Burbank attic runs $1,400 to $3,800 depending on square footage and depth, and we’ll tell you the exact number before any material leaves the truck.

This page is for homeowners in Burbank who already have Johns Manville insulation - or are choosing it for a new install - and want a contractor who knows how that specific product behaves in Southern California attics. If your energy bills have crept up or certain rooms won’t hold temperature, the insulation you already paid for may be settling, moisture-logged, or simply not deep enough. As an independent Johns Manville service provider, we’re not affiliated with the manufacturer - we just know their products well enough to install and correct them properly. Call (747) 837-5834 and you’ll get a person, not a menu.
Key Takeaways
- Johns Manville blown-in products perform well in Burbank’s dry climate, but only when installed at the correct depth and density.
- Settling is the most common issue we see, especially with older Climate Pro and Attic Protector fiberglass installed below R-38.
- Moisture from bath fan exhaust routed into the attic degrades cellulose and fiberglass faster than anything else in Burbank homes.
- We match existing material type during top-ups - mixing fiberglass and cellulose in the same attic creates uneven coverage and voids.
- Every Johns Manville job we do is backed by our 90-Day Done Right Promise, and most are finished in one visit.
How Johns Manville Products Fail - and How We Fix Them
Johns Manville makes solid insulation. The product itself is rarely the problem - the install depth, air-sealing, and ventilation around it usually are. That said, we see specific patterns in Burbank homes depending on which Johns Manville line was used and how long it’s been up there.
- Climate Pro fiberglass settling below R-38. Climate Pro is a blown-in fiberglass line that performs well when fluffed to the right depth, but it settles over time - sometimes 15 to 20 percent in the first five years. In a Burbank attic that was originally blown to R-30, that settlement drops real-world performance closer to R-24. We re-fluff and top up to current code depth, and we check for rodent tunnels and voids while we’re up there.
- Attic Protector losing coverage along exterior walls. Attic Protector is another Johns Manville blown-in line we see often. The weak point isn’t the material - it’s how the original installer handled the eaves. Many Burbank ranch homes built in the 1950s and 60s have soffit vents that either got buried or blocked, leaving a six-to-twelve-inch strip along the exterior wall with almost no insulation. We correct this with baffles, then blow to full depth edge to edge.
- Cellulose product absorbing moisture from unvented bath fans. Johns Manville’s cellulose lines work great in a dry attic, but Burbank homes with bathroom fans terminating inside the attic dump moisture directly into that material. Cellulose acts like a sponge; saturated material compresses, loses R-value, and eventually supports mold growth on the surrounding framing. We fix the ventilation first - because new insulation in a wet attic is wasted money - then remove and replace the affected material.
- Pest-damaged insulation from rats and squirrels. Burbank’s mature tree canopy means attics see rodent pressure, and blown-in insulation is their favorite nesting material. We regularly find Johns Manville fiberglass matted down with droppings and urine in neighborhoods like Magnolia Park and the Verdugo foothills. The repair is a full removal, sanitation, air sealing at entry points, then fresh blown-in material - and we document the entry points so you can seal the house, not just the attic.
- Inconsistent density in dense-pack wall applications. When Johns Manville fiberglass or cellulose is dense-packed into wall cavities at the wrong pressure, you get voids behind outlets, around windows, and at the top plates. The homeowner experiences cold walls and drafts they can’t trace. We use the correct dense-pack settings for the specific material and verify coverage with an IR camera before we call the wall done.
Our Johns Manville Blown-In Insulation Process
Here’s what a Johns Manville blown-in insulation job looks like when we do it in Burbank, from the first call to the final walkthrough:
- 1
Phone diagnosis. You call (747) 837-5834, a live person answers, and we ask the right questions: square footage, existing insulation type if you know it, problem rooms, and any history of roof leaks or pests. If a home energy audit makes sense, we’ll suggest it as a starting point.
- 2
Attic inspection and measurement. We inspect your existing Johns Manville material - depth, condition, coverage, moisture levels, ventilation, and air leaks at penetrations. Neil Ashford trained on this at Los Angeles Trade-Technical College and still checks every attic himself before any work is quoted.
- 3
Scope and price. You get a written, upfront price. No surprise add-ons. If a top-up is all you need, we say so - we don’t upsell removal when it isn’t necessary.
- 4
Prep work. Air sealing comes first: top plates, wire penetrations, can light housings, chase ways. Blowing insulation over unsealed bypasses is like putting a lid on a pot with holes in the bottom.
- 5
The blow-in. We install Johns Manville product at the correct depth and density for your climate zone and code requirements, using calibrated equipment. Whether it’s Climate Pro, Attic Protector, or a cellulose line, we match material type and verify final depth with a measuring card at multiple points.
- 6
Verification and cleanup. We check coverage with an IR camera where applicable, confirm depth markers, clean the work area, and walk you through what we did. Every job carries the 90-Day Done Right Promise - if it’s not right, we make it right.
What Johns Manville Blown-In Insulation Costs in Burbank
Pricing on Johns Manville blown-in work in Burbank depends on three things: attic size, current insulation depth, and whether air sealing is included. Here’s what we typically quote:
- Blown-in top-up (add 8 to 10 inches of fiberglass over existing): $850 to $1,700 for a typical 1,200 to 1,800 sq ft Burbank attic.
- Full attic blow-in (empty attic, R-38 fiberglass): $2,200 to $3,800 depending on square footage and access.
- Cellulose blow-in to R-38: $1,800 to $3,200 for the same typical footprint.
- Dense-pack wall insulation (per wall section): $1,400 to $2,800 for an average single-story exterior wall in a Burbank ranch.
- Insulation removal and replacement (pest or moisture damaged): $2,500 to $5,000, including sanitation and disposal.
What moves the price: access difficulty, existing depth, moisture or pest remediation, and whether air sealing is part of the scope. We’re direct about the number - you’ll get a written quote before we start, and most jobs finish the same day. Call (747) 837-5834 for a free estimate on your specific attic.

Why Burbank Homeowners Call Warmline Insulation Co. for Johns Manville Work
We’ve been in business since 2011 and we’ve spent those 15-plus years working in Burbank attics - not reading about them on a forum. Our technicians are background-checked, uniformed, and trained on the specific quirks of Johns Manville blown-in products. When a job needs a different material - say a Reflectix radiant barrier for a west-facing attic or an Owens Corning product for a specific application - we’ll tell you straight and install the right product for the condition, not the one that’s easiest for us.
Most jobs are completed in a single visit. Pricing is upfront. And if anything isn’t right, the 90-Day Done Right Promise means we come back and make it right - in writing. That’s the difference between a team that specializes in insulation and a general contractor who blows some material in the attic on a Friday afternoon. Call (747) 837-5834 any time, day or night. A live person answers.
FAQs
Johns Manville’s material warranty generally covers the product itself when installed to manufacturer specifications, and as an independent service provider, we install to those specs so the warranty isn’t voided by sloppy workmanship. What we add on top is our own 90-Day Done Right Promise, which covers our workmanship regardless of manufacturer policy. Call (747) 837-5834 and we’ll walk you through what your specific Johns Manville product warrants.
If the material is dry, free of pest damage, and just below the recommended depth for your climate zone, a top-up is the cost-effective fix - and we’ll tell you that without trying to sell a removal. If there’s moisture damage, rodent activity, or the existing material has compressed below half its original depth, replacement is the honest call. We’ll inspect and show you exactly what we’re seeing before you spend a dollar.
In most cases, yes - a typical top-up or full attic blow-in is a single-day job, and we schedule most Burbank homeowners within a few days of the estimate. Emergency situations, like a roof leak that’s soaked the insulation, take priority. Call (747) 837-5834 and a live person will tell you exactly when we can be there.
We do not mix material types in the same attic. Blowing fiberglass over existing cellulose - or vice versa - creates uneven coverage, settles unpredictably, and makes future air sealing harder. We match what’s already up there, or we remove the old material if a product change makes sense for your home’s conditions.
For Burbank’s climate zone, we recommend R-38 minimum in attics, which translates to roughly 10 to 14 inches of blown fiberglass depending on the specific Johns Manville product, or about 10 to 12 inches of cellulose. The exact depth depends on the product’s settled density rating. Good insulation shouldn’t be something you think about - that means it’s working. Call (747) 837-5834 for a free inspection and an exact number for your attic.
Written by Neil Ashford, Owner, Warmline Insulation Co. at Warmline Insulation Co., serving Burbank and nearby areas.