Fast, Reliable Attic Insulation Across Citrus
If your Citrus home was built in the 1950s or 60s, there’s a good chance your attic still has the original R-11 fiberglass batts it came with, compressed between 2×4 rafters that were never meant to hold a modern insulation load. That means your AC runs harder every afternoon while attic temperatures climb past 140°F. We fix that. Fountain Valley Insulation installs blown-in, attic batt, and spray foam insulation in Citrus, and we’ve worked on enough tract homes off Foothill Blvd and around Citrus College to know exactly what these attics need. Call (833) 390-3099 for a free estimate, and we’ll walk you through the right material for your roof structure, not just what happens to be on the truck.

Why Fountain Valley Insulation Is Citrus’s Preferred Attic Insulation Company
Most insulation contractors show up with one brand and one method. We don’t. We carry eight manufacturers, including CertainTeed, Icynene, Demilec, and GreenFiber, so when we look at a Citrus attic we can actually recommend what fits the framing, the venting, and the homeowner’s budget instead of forcing one product into every job. That matters in Citrus because the original 2×4 rafter design on 1950s tract homes doesn’t handle every insulation type the same way. A blown-in fiberglass job might be perfect on one block off Foothill Blvd, while a spray foam approach through Icynene or Demilec makes more sense on a deeper attic near Citrus College. We match the material to your home, not the other way around.
We also understand the full scope of what these attics need before insulation goes in. Attic Insulation on its own won’t fix a ventilation problem, and Citrus attics have a lot of ventilation problems. Rooted in original construction, not bad luck. Our team knows to check intake and ridge venting first, because blowing new insulation over a sealed-up 1950s attic turns it into an oven that cooks shingles from underneath. That’s the kind of local knowledge you get from a specialist who’s opened dozens of attics in the 91702 ZIP.
Attic Cleaning Services in Citrus
Attic Cleaning Services in Citrus typically start with removing old insulation, rodent droppings, dust, and whatever else has accumulated in the space, then sanitizing and prepping the deck for new material. In a 1960s tract home, that often means pulling out collapsed R-11 batts that have been sitting against the ceiling drywall for decades. Most Citrus jobs run $450 – $900 depending on attic size and how much debris is up there.
Contamination Cleanout
Rodents and birds love the gaps around old attic vents and roof penetrations, and Citrus has plenty of older homes with both. We remove contaminated insulation, treat the affected areas, and get the space ready for whatever new material you choose.

Pre-Insulation Prep
Before we install anything, the deck needs to be clear. Old batts, loose fill that’s blown around, construction debris from a past remodel. We bag it, remove it, and make sure the baffles and any venting paths are clear before new insulation goes down.

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 in Citrus
Attic Mold Removal in Citrus usually means addressing moisture trapped by poor venting or bathroom fans that vent directly into the attic space, a common issue in older 91702 homes. Left alone, that moisture condenses on the underside of the sheathing during winter nights and feeds mold growth. Most Citrus mold removal jobs run $600 – $1,400 depending on how much of the sheathing is affected and whether we’re also correcting the venting that caused it.
Ventilation-Related Mold
When a 1950s attic has no ridge vent and barely any soffit intake, warm air from the house rises and sits there. Condensation follows. We treat the mold, then fix the airflow so it doesn’t come back. Installing insulation over mold without treating it first just hides the problem and makes it worse.
Bathroom Fan Correction
A bathroom fan that dumps humid air into the attic instead of outside will feed mold indefinitely. We’ll reroute or replace those terminations as part of the mold removal job, because insulation can’t solve a moisture source it’s sitting next to.

Trusted Brands We Service in Citrus
We install and service insulation from CertainTeed, Icynene, Demilec, and GreenFiber, among others. That means a Citrus homeowner can choose between premium blown fiberglass, closed-cell spray foam for the tightest air seal, or recycled-content fiber like GreenFiber if sustainability matters. We keep project stock available for fast turnaround in Citrus, so you’re not waiting on a special order when your attic is already opened up and ready. And if you’re weighing material options, ask us why we carry Rockwool, spray foam, and recycled fiber. Most contractors carry none of them.
Common Attic Insulation Problems We See in Citrus Homes
- Insulation added over original R-11 batts with no venting upgrade. In Citrus, this is the single most common mistake we find. The 1950s and 60s tract homes off Foothill Blvd barely had venting to begin with, so adding insulation on top of the old batts just traps more heat against the shingle deck and accelerates shingle failure.
- Collapsed batts compressed against 2×4 rafters. When original R-11 batts settle and compress over 50 years, they leave gaps at the eaves and top plates where the 1950s framing is thinnest. Those gaps leak conditioned air straight out of the house.
- Missing or blocked attic baffles. Many Citrus homes were built without soffit baffles, and over the years dust and debris close off what little airflow existed. Without baffles, blown-in insulation can block the soffit vents entirely.
- Moisture trapped by climate-inappropriate vapor control. Citrus has hot, dry summers and mild winters, but the original assemblies sometimes included vapor-retarding materials that made sense in colder climates. In our thermal cycling, those barriers can hold moisture in the attic during winter temperature swings and promote mold.
Pricing for Attic Insulation in Citrus, CA
For a typical Citrus single-story tract home, blown-in attic insulation runs $1,200 – $2,400 depending on square footage and target R-value. Attic batt insulation replacement typically lands between $1,000 and $2,200. If you’re doing an attic insulation top-up over existing material that’s still in decent shape, expect $800 – $1,500. Spray foam through Icynene or Demilec runs higher, usually $3,000 – $6,000 for an attic of this size, but delivers a full air seal that fiber products can’t match. What moves the price most in Citrus is whether ventilation work has to happen first. If your attic has no baffles or ridge vent, that’s another $400 – $900, and skipping it would undermine the entire insulation job. Call (833) 390-3099 for an exact quote. Estimates are free.
We Also Serve Cities Near Citrus
Fountain Valley Insulation works throughout the San Gabriel Valley, including Attic Insulation in Citrus and nearby communities in Azusa, Irwindale, Covina, and Glendora. If you’re a few blocks over the city line, the same team covers your attic with the same brands and the same local understanding of 1950s and 60s tract construction.
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 About Attic Insulation in Citrus
Technically yes, but in most Citrus attics we advise against it. The original batts have usually collapsed and compressed against the top plates and eaves, leaving air gaps. Blowing over them doesn’t fix those gaps, and it adds weight and heat load to a 2×4 rafter system that was never designed for it. We usually remove the old material, correct the venting, and start fresh. Call (833) 390-3099 and we’ll tell you honestly whether your attic is a top-up candidate or a full replacement.
Most Citrus homes built in the 1950s and 60s went up with minimal soffit intake and no ridge vent. Insulation alone raises attic temperatures, because there’s no airflow to carry the heat out. That’s why we treat the insulation and the ventilation as one job in Citrus. R-value without airflow just bakes the shingle deck.
For Citrus summers, a radiant barrier is one of the highest-impact upgrades you can make. It reflects radiant heat before it ever reaches the insulation, which reduces attic temperatures by a meaningful margin on 95°F+ days. We install radiant barrier below the roof deck on many Citrus jobs, paired with blown fiberglass. It’s not a substitute for proper R-value, but together they handle both convective and radiant heat gain.
Yes. Attic cleaning and mold removal are both in our scope, and we nearly always handle them before insulation goes in. Insulating over contaminated material seals in the problem. In Citrus, where old batts and dust have been sitting for decades, cleaning first is standard practice for us.
We install CertainTeed, Icynene, Demilec, and GreenFiber among others, so the material you get depends on your attic and your goals. CertainTeed blown fiberglass works well in tight 2×4 rafter bays. Icynene and Demilec spray foam seal air leaks first. GreenFiber gives you a recycled-content option. We’ll recommend the right one after we look at your attic, not before. Call (833) 390-3099 for a free estimate and a straight answer.
Written by Nate Calloway, Owner at Fountain Valley Insulation, serving Citrus and the San Gabriel Valley since day one.