Trusted Attic Insulation for Van Nuys Homeowners
Our Attic Insulation in Van Nuys does the heavy lifting for your home’s comfort. Most houses here lose 25 to 40 percent of their conditioned air through the attic, which means your AC runs longer every summer afternoon and your heater works harder on those chilly winter nights. We’re Thermal Insulation Co, an insulation-only contractor led by Ruben Castellano, and we work exclusively on this part of your home. Call (855) 382-3451 and we’ll tell you honestly which material and method fits your attic, not just which product we happen to have on the truck.
Insulation Contractors
Insulation contractors are the tradespeople who assess, specify, and install thermal barriers in your home. In Van Nuys, you’ll find plenty of general remodelers who list insulation as a side service, but that’s not what we do. Thermal Insulation Co is solely focused on insulation, which means we think through R-value targets, air sealing details, and material compatibility every single day—see our Attic Insulation Maintenance Checklist for Van Nuys Homeowners for what to watch after installation.
Specialist vs. Generalist
A general contractor handles many trades, and that’s fine for a remodel. Attic performance demands a narrower focus. We carry eight insulation brands and three installation methods so we can match the house rather than forcing a single product on every job.
Code and Permitting Familiarity
Van Nuys falls under Los Angeles building code, which sets minimum R-values for attic insulation in new construction and many retrofit scenarios. We handle the insulation scope properly, and when a city inspector needs to sign off, we’re prepared with proper documentation from the start.
Attic Ventilation
Attic Ventilation is the system of intake and exhaust vents that lets air move through your attic, controlling heat and moisture. Without proper airflow, insulation alone cannot do its job, and homes in Van Nuys deal with both intense summer heat and winter dampness that ventilation helps manage. We evaluate your current setup before adding or replacing insulation.
How Ventilation Affects Insulation
Insulation slows heat transfer, but ventilation removes the hot air that would otherwise cook the underside of your roof. When the two work together, your attic stays cooler and your insulation stays dry. We inspect soffit, gable, and roof vents before recommending changes.
Signs of Poor Airflow
Hot second-floor rooms in summer and condensation on attic surfaces in winter are common indicators. We see this regularly in older Van Nuys homes where vents were never upgraded. Our team can correct airflow before installing new insulation.
Radiant Barrier
Radiant Barrier is a reflective material installed under your roofline to reflect radiant heat before it enters the attic. In Van Nuys, where summer roof temperatures routinely exceed 140 degrees, this can meaningfully reduce the heat load your insulation has to block. We install radiant barrier as a complement to insulation, not a replacement.
Best Applications in Southern California
A radiant barrier works hardest in homes with large roof areas and direct sun exposure, which describes much of the San Fernando Valley. When paired with blown-in fiberglass or cellulose below, the two systems handle different heat paths.
What It Won’t Do
Radiant barrier does not replace your R-value insulation. It handles radiant heat, not conductive heat. We’ll tell you straight if your home would benefit more from additional insulation before spending on a radiant barrier.
Attic Cleaning Services
Attic Cleaning Services remove dust, debris, old insulation, and rodent contamination before new material goes in. We offer this in Van Nuys because a clean attic is the proper foundation for air sealing and insulation work. Ruben Castellano and our crew handle this carefully, especially in older homes with lathe and plaster dust or prior pest issues.
Why Cleaning Comes First
Blown-in insulation over dust, rodent droppings, or old fiberglass traps that stuff inside your attic. Removing it first gives us a clear view of air leaks, wiring, and venting. It also means your new insulation isn’t resting on contaminants.
What We Remove
Typical cleanouts include old batts, loose-fill, rodent nests, and construction debris. We bag and remove everything from the attic, not just push it to the corners. This is labor-intensive work, and doing it right makes every later step more effective.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Attic Mold Removal
Attic Mold Removal is the process of eliminating fungal growth from attic framing, sheathing, and insulation. Van Nuys attics with poor ventilation commonly develop mold on north-facing roof sheathing or around bathroom exhaust fans that vent into the attic rather than outdoors. We identify the moisture source and remove affected material before treating surfaces.
First, Find the Moisture
Mold cannot survive without moisture. We inspect vent termination points, roof leaks, and air leaks from the living space below. Fixing the source is the only way to prevent recurrence, and we won’t apply new insulation until that’s handled.
Removal and Treatment
Affected insulation gets bagged and removed. Surface mold on framing is cleaned and treated. Once the attic is dry and the airflow is corrected, we rebuild the insulation layer with new, clean material matched to your home’s requirements.
Attic Insulation Removal
Attic Insulation Removal is the process of extracting old, damaged, or contaminated insulation so new material can be installed. In Van Nuys we remove old fiberglass batts, settled blown-in cellulose, and occasionally spray foam that was misapplied. The process involves commercial vacuums and hand removal, depending on the material.
When Removal Is Necessary
Rodent activity, water damage, mold, or simply decades of settling can make old insulation ineffective or unhealthy. If your current insulation is compressed, saturated, or contaminated, no amount of new material on top will fix it properly.
What Happens After
Once the old material is out, we air seal the attic floor penetrations and inspect the ventilation system. Then we install the replacement insulation using one of our three methods, chosen for your home’s specific conditions.
Brands We Service
We install Owens Corning fiberglass in batt and blown-in forms. Their products have consistent density and thermal performance, and we’ve used them in hundreds of Valley attics. For spray foam, we work with Demilec’s open-cell and closed-cell systems, which give us precise control over air sealing and R-value per inch.
GreenFiber cellulose is our recycled-content option, made from up to 85 percent post-consumer paper. In Van Nuys homes with irregular attic framing or hard-to-reach corners, blown cellulose fills gaps effectively. Johns Manville fiberglass rounds out our lineup with solid mid-range products for standard applications. Whether you have one of these brands and need it removed or you’re choosing what to install next, we can help.
Signs You Need a Pro Right Now
- Your upstairs rooms are 10+ degrees warmer than downstairs. That heat differential usually points to an under-insulated attic. The heat isn’t only uncomfortable, it’s forcing your AC to run longer cycles, which puts wear on the compressor and spikes your LADWP bill.
- You see daylight through your attic floor. If light from the living space below shows through gaps around can lights, plumbing penetrations, or wall top plates, your conditioned air is leaking straight into the attic. This is air sealing, not just insulation, and it’s a fix we handle on nearly every Van Nuys job.
- Your insulation is compressed, stained, or smells musty. Insulation loses its R-value when compressed or wet. Musty smells often point to a roof leak or bathroom vent issue. We’ll trace it back to the source before installing anything new.
- You hear rodents in the attic at night. Rats and squirrels in Van Nuys attics are common, and they destroy insulation by nesting and leaving droppings. Contaminated material should be removed before new insulation goes in.
- Your energy bill keeps climbing despite no changes to your usage. DWP rates have gone up, but worsening attic performance is often the hidden variable. Older homes in Van Nuys with original 1960s or 1970s insulation are running at a fraction of modern R-value standards.
Our Process, Step by Step
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Attic inspection and measurement. We look at current insulation depth, condition, venting, and air leaks. We measure the attic floor area and note any obstacles like ducts, wiring, and recessed lights that affect installation choices.
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Material and method recommendation. Based on the inspection, we’ll recommend batt, blown-in, or spray foam, and a specific brand within that category. For most Van Nuys attics, that’s blown-in fiberglass or cellulose, but we’ll explain why, not just hand you a quote.
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Air sealing. Before insulation goes in, we seal the leaks around can lights, plumbing stacks, and top plates with foam or caulk. Skipping this step undercuts everything else, and we don’t skip it.
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Insulation installation. We install the agreed material to the specified R-value, typically R-38 to R-49 for San Fernando Valley attics, depending on your home and code requirements.
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Final check and cleanup. We walk the attic after installation to verify even depth and full coverage, then clean the access area. You get a clear summary of what was installed, where, and at what R-value.
How Much Does Attic Insulation Cost in Van Nuys?
A typical attic insulation job in Van Nuys runs between $1,800 and $4,500 for a standard 1,200 to 1,800 square foot home using blown-in fiberglass or cellulose at R-38, and you can learn more about Attic Insulation pricing factors below. Spray foam runs higher, often $4,500 to $9,000, because of the material cost and specialized installation. Attic cleaning or insulation removal adds $800 to $2,000 depending on attic size, access difficulty, and contamination level. Radiant barrier installation typically adds $1,500 to $3,000. These figures reflect our recent work in the area, and your exact price depends on attic accessibility, existing insulation condition, air sealing scope, and whether rodent contamination needs remediation.
What affects the price: attic square footage, removal needs, vent correction, and access limitations like tight scuttle holes or low-slope roofs. The best way to avoid overpaying is to get an itemized estimate that separates removal, air sealing, and insulation so you can see what you’re paying for. Our free estimates include a written scope of work and material specification. Call (855) 382-3451 to schedule yours.
Our Service Area Near Van Nuys
We serve Van Nuys and the surrounding San Fernando Valley communities, including Valley Glen, Sherman Oaks, Encino, Studio City, North Hills, North Hollywood, Northridge, and Burbank. Most attic insulation jobs in Van Nuys are scheduled within the same week, and we keep our service radius tight to stay responsive. If you’re nearby, we’ll bring the same inspection process and material options to your attic. See our dedicated pages for Attic Insulation in Valley Glen and Attic Insulation in Sherman Oaks for area-specific details.
Serving Van Nuys, CA — Our Local Coverage Area
We’re based in the Van Nuys area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Attic Insulation in Van Nuys
Attic insulation is the thermal barrier installed on your attic floor to slow heat transfer between your living space and the outside air. It works in both directions, keeping heat out in summer and retaining it in winter. In Van Nuys, the primary job is blocking the intense summer heat from cooking your ceilings and overworking your AC.
Most standard attic insulation jobs in Van Nuys wrap up in one day. Larger homes, spray foam applications, or jobs requiring full removal and air sealing may take two days. We’ll give you a specific timeline on our estimate so you know what to expect.
Standard blown-in insulation for a typical Valley home runs $1,800 to $4,500. The range covers differences in attic size, existing insulation depth, and whether air sealing is included. Call (855) 382-3451 for a free estimate with an exact number for your house.
Yes, we install Owens Corning fiberglass in both batt and blown-in forms. It’s one of the brands we carry because of its consistent density and reliable R-value performance. We’ll recommend it when it fits your home’s needs, not because it’s the only thing on our truck.
We do our best to accommodate urgent situations, especially roof leaks or pest damage that need immediate attention before more damage occurs. Call us at (855) 382-3451 and we’ll tell you honestly when we can get a crew to your Van Nuys home.
Every insulation installation we complete is backed by our workmanship guarantee, and the materials themselves carry manufacturer warranties. The specifics depend on the brand and product, and we’ll outline what applies to your job in writing before we start.
Clear a path to the attic access point and move any items stored near the hatch. We handle everything inside the attic itself, including old material removal if needed. If you have items stored on the attic floor, we’ll need them moved or we can discuss removal as part of the scope.
Schedule Your Attic Insulation Service in Van Nuys Today
Call Thermal Insulation Co at (855) 382-3451 for a free, no-obligation attic insulation estimate in Van Nuys. Ruben Castellano and our crew will inspect your attic, explain what’s actually going on up there, and recommend the right insulation method and material for your home. No pressure, just straight answers.
Written by Ruben Castellano, Owner at Thermal Insulation Co, serving Van Nuys and the San Fernando Valley.