Fast, Reliable Blown-In Insulation Across Citrus
Blown-in insulation in Citrus typically costs $1.80 to $3.20 per square foot of attic floor, with most complete retrofits on a 1,200-square-foot ranch running between $2,200 and $4,800 including air sealing. We’re usually on-site in Citrus within 24 to 48 hours of your call, and same-day starts are common for attic jobs once the written price is approved. Our crews know the post-WWII ranch tracts off Citrus Road and the slab-on-grade neighborhoods near the old Sacramento Northern corridor - homes that were built before Title 24 existed and now test at R-11 or less in attics that see 150°F air all summer. Call (562) 242-7569 for a free written estimate with no work until you see the price.
Why Topside Attic Insulation Pomona Is Citrus’s Preferred Blown-In Insulation Company
We’ve worked enough Citrus attics to know what the thermal camera will show before we climb the ladder. On a 1958 slab-on-grade ranch off Citrus Road, we pulled the original compressed fiberglass batts back and found bare joists where a 1990s HVAC crew had shoved insulation aside to run flex duct; our thermal scan lit up a patchwork of voids that fed straight into the living room. We air-sealed the recessed can-light penetrations and the duct chase, blew GreenFiber cellulose over the existing decking to R-49, and the homeowner’s next SMUD bill dropped noticeably without touching the A/C.
That job is typical of what we find in Citrus. The community’s housing stock - single-story ranches built from the late 1940s through the mid-1970s - was never designed for Sacramento Valley heat loads. Original fiberglass batts have settled to R-11 or less. HVAC contractors from the 1980s and 1990s cut through or pushed aside whatever insulation existed. Recessed can lights and shallow roof pitches leak conditioned air year-round. We document every finding with photos, seal every penetration before blowing a single bag, and publish before-and-after blower-door numbers so you can verify the result.
Our Blown-In Insulation team dispatches from our Los Angeles office, but crews serve Citrus locally and carry the full Owens Corning, GreenFiber, and Johns Manville product lines on their trucks. Calls are answered by a live person 24/7, and every job begins with a written price - no exceptions.
Our Blown-In Insulation Services in Citrus

Blown-In Cellulose
GreenFiber cellulose is our default recommendation for most Citrus ranches. It’s treated with borate for fire and pest resistance, packs tightly around the duct chases and top-plate gaps we find in these older Sacramento County tracts, and delivers R-3.8 per inch - meaning we can hit R-49 at roughly 13 inches depth without overloading shallow-pitch rafter bays. On that 1958 Citrus Road job, we blew cellulose directly over the existing decking after air sealing, avoiding the cost and mess of full batt removal. Most complete cellulose retrofits in Citrus run $2.40 to $3.20 per square foot.

Blown-In Fiberglass
We stock Owens Corning ProCat and Johns Manville Spider fiberglass for Citrus homeowners who prefer a synthetic option or need faster dry times in winter installs. Fiberglass doesn’t settle as much as cellulose over decades, which matters in attics where access is limited and you don’t want to recheck depth in fifteen years. It also doesn’t absorb moisture, a consideration during tule fog season when attic humidity can spike. Fiberglass retrofits in Citrus typically run $2.00 to $2.80 per square foot.

Dense-Pack Wall Insulation
Many Citrus ranches were built with uninsulated 2×4 exterior walls - standard for the era, but now a major thermal bypass. Dense-pack cellulose fills these cavities at roughly 3.5 pounds per cubic foot, creating an air-impermeable barrier that standard batt installation never achieves. We drill access holes through the interior drywall or exterior siding, pack the full cavity length, and patch the holes. Wall jobs are more invasive than attic work, but for homes with original siding still in decent shape, it’s the only practical way to address the envelope without a full gut renovation. Dense-pack wall insulation in Citrus runs $3.50 to $5.50 per square foot of wall area.

Blown-In Top-Up
Not every Citrus attic needs a full retrofit. If your existing blown-in or batt insulation is in reasonable shape but has settled below R-30, we can air-seal penetrations and blow additional material to bring you to R-38 or R-49. This is the most cost-effective option for homes that had insulation added in the 1990s or 2000s but never got the air sealing that makes insulation actually perform. Top-up jobs in Citrus typically run $1.80 to $2.60 per square foot, and we still deliver full documentation including blower-door numbers and photo records.

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.
Before
AfterTrusted Brands We Service in Citrus
We source blown-in materials from Owens Corning, GreenFiber, and Johns Manville - no proprietary lock-ins, no single-source pressure. Our Citrus crews carry GreenFiber cellulose and Owens Corning ProCat fiberglass on their trucks as standard stock, which means most jobs start the same day the written price is approved. For specialty applications like dense-pack wall fills or high-R attic builds, we order Johns Manville Spider or specified batts with 24-hour turnaround through our Sacramento distributor. You get the product that fits your home, not the product we need to move.
Common Blown-In Insulation Problems We See in Citrus Homes

- Original fiberglass batts compressed to R-11 or less. The 1950s-1970s ranches that dominate Citrus were built with 3.5-inch batts rated at R-13 when new; sixty years of settling, foot traffic from HVAC service, and rodent activity have compressed most to R-9 or R-11. Attic air temperatures above 150°F in July mean your cooling system is fighting a thermal reservoir that modern code never intended.
- 1980s-1990s HVAC retrofits left bare joists and hidden voids. When contractors ran flex duct through Citrus attics decades ago, they routinely shoved insulation aside and never restored it. Our thermal scans on these tract homes almost always reveal patchwork voids that account for a disproportionate share of the home’s heat gain - and the homeowner never knew because the gaps are buried under decking or behind duct chases.
- Recessed can-light penetrations leak conditioned air year-round. The shallow roof pitches common to Citrus ranches mean can lights sit close to the attic floor, creating direct pathways for heated or cooled air to escape. In blue tule-fog winters, that leakage direction reverses - cold attic air drops into living spaces while your furnace runs continuously.
- Zero elevation relief means no natural cooling. Unlike foothill neighbors like Folsom or El Dorado Hills, Citrus sits on the flat Sacramento Valley floor with no marine influence and no delta breeze penetration. Elevation doesn’t moderate your attic temperature. Insulation has to do all the work, which is why R-38 to R-60 isn’t aspirational here - it’s the minimum for reasonable SMUD bills.
Pricing for Blown-In Insulation in Citrus, CA
Most complete attic retrofits on a typical 1,200-square-foot Citrus ranch run $2,200 to $4,800, including air sealing of top plates, can lights, and duct penetrations. Blown-in cellulose runs $2.40 to $3.20 per square foot; fiberglass runs $2.00 to $2.80. Dense-pack wall insulation runs $3.50 to $5.50 per square foot of wall area. Top-up jobs where existing insulation can stay run $1.80 to $2.60 per square foot.
What moves you within these ranges: attic accessibility (scuttle vs. pull-down stairs), whether we need to remove old batts or can blow over, the extent of air sealing required, and whether your home needs baffles installed at the eaves for ventilation. Every job gets a written price before any work starts - Haven Standard Clause 1 - and we include a Free Second Opinion on any competing written estimate you bring us. Call (562) 242-7569 for your exact number; estimates are free.
We Also Serve Cities Near Citrus

Our crews work throughout the eastern San Gabriel Valley and western Inland Empire. If you’re in Citrus or nearby Pomona, La Verne, San Dimas, or Claremont, we carry the same product stock and same documentation standards to every job.
Serving Citrus, CA - Our Local Coverage Area
We’re based in the Citrus area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Blown-In Insulation in Citrus

We can blow over old batts in most 1962 Citrus ranches if the existing material is dry, uncontaminated, and not compressed below the joist tops. We pull back sections to inspect for bare joists and HVAC-cut voids first, air-seal every penetration we find, then blow GreenFiber cellulose to R-49 over the intact batts. If the original fiberglass is moldy, rodent-soiled, or fully compressed to the deck, we quote removal separately. Call (562) 242-7569 and we’ll inspect before giving you the written price.
Citrus sits on the flat Sacramento Valley floor with zero elevation relief and no marine air influence, while El Dorado Hills gains 500+ feet of elevation and catches delta breezes that drop attic temperatures by 20°F or more on the same afternoon. Your 150°F attic air is normal for Citrus in July - and exactly why R-11 original batts fail so completely here. We size every Citrus job to R-38 minimum, R-49 preferred, because the thermal load doesn’t negotiate.
Yes, if the siding is structurally sound and you’re not planning replacement within five years. We drill access holes, pack 2×4 cavities with dense-pack cellulose at 3.5 pounds per cubic foot, and patch with matched materials. For homes with failing siding already, we recommend timing wall insulation with the siding replacement so we can access cavities from the exterior without interior repair. Call (562) 242-7569 and we’ll assess your specific siding condition.
It helps both directions - that’s the point of a proper building envelope. Dense tule fog in December and January can hold Citrus daytime temperatures in the low 40s for days, and uninsulated or poorly sealed attics lose heat as fast as they gain it in July. The same air sealing and R-49 cellulose that blocks 150°F attic air in summer traps conditioned heat in winter. We publish before-and-after blower-door numbers on every job so you can verify the year-round performance change.
We install GreenFiber cellulose, Owens Corning ProCat fiberglass, and Johns Manville Spider fiberglass in Citrus attics, selected to match your home’s condition and your performance goals. No proprietary lock-ins, no brand exclusives. Our crews carry GreenFiber and Owens Corning as standard truck stock for same-day starts. Call (562) 242-7569 for a free estimate and we’ll recommend the right material for your specific attic.
Ready to stop paying SMUD for conditioned air that leaks straight into your attic? Call (562) 242-7569 for a free written estimate. We’ll inspect your attic, show you what the thermal camera reveals, and deliver a flat price with a written scope and written warranty before anyone lifts a tool - Haven Standard, no exceptions. Every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door numbers you can verify yourself.
Written by Wes Okafor, Owner at Topside Attic Insulation Pomona, serving Citrus and the greater Los Angeles metro since 2016.