Insulation Company in Upland, CA
Blown in insulation is the most common call we get from Upland homeowners, and it’s usually because a house built before 1990 has settled batts or empty attic cavities that let 105°F summer heat pour straight into the living space. The north foothill streets off the 91784 ZIP feel this hardest, but downtown’s 1920s-50s bungalows have almost nothing in their walls to begin with. Orange County Insulation has served Upland since 2013, and we only do insulation, which means we’ve seen every attic condition this city throws at us. Call (877) 680-3557 for a free estimate and we’ll tell you exactly what your home needs.
Why Upland Homes Are Different
Upland sits on the alluvial fan at the base of the San Gabriel Mountains, and that geography creates two very different insulation problems depending on where you live. North of Baseline Road toward the 91784 ZIP, summer days regularly hit 100°F and the shallow, low-pitch attics on older foothill homes trap heat against mountain-facing roof decks. We routinely measure attic temperatures above 140°F in July on those streets before adding ridge and eave venting, then insulating. The cold nighttime mountain air that drains down the canyons also swings temperatures hard in winter, so draft control matters more here than in flat Inland Empire cities.
Downtown and central Upland in the 91786 ZIP is a different story. Those 1920s through 1950s single-story bungalows and early tract homes were built with little or no wall insulation and often just an inch of dusty material in the attic. East-side tracts from the 1960s through 1990s in 91785 have more conventional batt and blown-in attics, but many were built to older energy codes that are nowhere near today’s R-value standards. That age split means most Upland jobs are either whole-attic air-sealing plus blown-in top-ups on old cavity-poor homes, or R-value upgrades on newer builds that simply never got enough material. Add Santa Ana wind exposure on the foothill edge during wildfire season, and a well-sealed, fire-resistant attic assembly stops being optional.
Our Main Upland Services
The two services Upland homeowners ask about most are attic insulation and spray foam, and each solves a different problem depending on your home’s age and which side of the 210 freeway you’re on.
Attic Insulation in Upland
Most heat gain in a Upland home happens through the attic, especially on 91784 foothill streets where low-pitch roofs bake all afternoon. We air-seal the attic floor first, then blow in cellulose or fiberglass to bring the assembly up to R-38 or better, matching the material to whether the home has recessed lights, odd joist spacing, or old knob-and-tube wiring. On older downtown 91786 bungalows we often find almost no existing insulation, which means the improvement is immediate. See the full breakdown here: Attic Insulation in Upland.
Spray Foam Insulation in Upland
Spray foam is the answer when Upland homeowners want air sealing and insulation in one pass, particularly on cathedral ceilings, knee walls, or attics being converted into living space. Closed-cell foam from Demilec also adds structural rigidity and works well against the Santa Ana wind-driven dust and ember exposure that foothill-edge homes face in wildfire season. Open-cell Icynene is the quieter, more affordable option for standard attics and walls. Both are installed by crews who only do insulation, never roofing or HVAC on the side. Learn more at Spray Foam Insulation in Upland.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Blown In Insulation in Upland
Blown in insulation is the fastest, most cost-effective way to fix an under-insulated Upland attic, and it’s the service we recommend first for most homes built before 1990. In downtown 91786 bungalows we’re usually filling cavities that never had anything, while in 91785 tract homes we’re topping up settled fiberglass that’s lost half its R-value. The swing between 100°F summer afternoons and cold mountain-air nights makes a properly insulated attic the single biggest comfort upgrade most Upland homeowners can make. We install blown in insulation from GreenFiber, Owens Corning, and Johns Manville, and our crews have been doing this work exclusively since 2013. See Blown In Insulation for the full scope of what we cover.
Cellulose Insulation
Signs you need it
You feel drafts in rooms directly below the attic in winter and heat radiating through ceilings in summer despite running the AC constantly.
What it costs in Upland
Blown in cellulose typically runs $1.80 to $3.10 per square foot installed in Upland, depending on depth and how much air-sealing your attic needs first.
How we do it
We air-seal penetrations, protect recessed lights and bath fans, then blow GreenFiber cellulose to a consistent depth that hits R-38 or better across the entire attic floor.
Blown In Attic Insulation
Signs you need it
Your attic has fiberglass batts that are compressed, discolored, or missing entirely over whole sections of the ceiling.
What it costs in Upland
Blown in attic insulation in Upland generally falls between $1,600 and $3,900 for a typical 1,500-square-foot attic, based on depth and access.
How we do it
We remove or flatten the old material, seal every top plate and penetration, and blow fresh fiberglass or cellulose to a uniform depth that meets current energy code.
What Blown In Insulation Costs in Upland
| Item | Typical range in Upland |
|---|---|
| Blown in fiberglass attic insulation | $1,600 – $3,900 per typical attic |
| Blown in cellulose attic insulation | $1.80 – $3.10 per sq ft installed |
| Air sealing (per attic) | $500 – $1,200 depending on attic size |
How long does blown in insulation last in Upland?
Cellulose and fiberglass both hold their R-value for decades if the attic stays dry, but Upland’s Santa Ana winds can blow dust and debris into poorly sealed vents over time, so an inspection every 5 to 10 years is smart. Call (877) 680-3557 and we’ll check yours during the estimate.
Can you blow insulation into walls in an older Upland home?
Yes, and 1920s-50s Upland homes with empty stud cavities are great candidates for dense-pack cellulose. We drill small access holes and blow GreenFiber at high pressure to fill the cavity completely, which also cuts drafts from mountain-air drainage at night.
Brands We Service in Upland
We stock and install GreenFiber cellulose, Owens Corning and Johns Manville fiberglass, and Knauf batts, which means the material goes in based on your Upland home’s specific attic and wall conditions, not on whatever one supplier happened to have on the truck. See our brands for the full manufacturer lineup, including Rockwool, CertainTeed, Icynene, and Demilec.
Pricing for Insulation Company in Upland, CA
| Service | Typical range in Upland |
|---|---|
| Blown in fiberglass attic insulation | $1,600 – $3,900 per typical attic |
| Blown in cellulose attic insulation | $1.80 – $3.10 per sq ft installed |
| Air sealing (per attic) | $500 – $1,200 depending on attic size |
| Spray foam insulation (open-cell) | $2.00 – $3.50 per sq ft |
| Spray foam insulation (closed-cell) | $3.00 – $5.50 per sq ft |
| Attic insulation (full replacement) | $3,200 – $7,000 per typical home |
| Blown in wall insulation (dense-pack) | $1.50 – $2.20 per sq ft of wall |
| Mineral wool batt installation | $45 – $78 per hour plus materials |
Most Upland price variation comes from two things: attic access on 1920s foothill bungalows with low-pitch roofs and tight clearances, and how much air sealing the home needs before we blow anything in. Every quote is line-itemed and valid before work starts, so the number we give you is the number you pay.
Neighborhoods We Serve in Upland
We work across all three Upland ZIP codes, from the foothill streets north of Baseline to the flat tract homes south of Foothill Boulevard and everything around downtown. Our crews are in Upland weekly, so scheduling is usually days, not weeks.
- North Upland foothills (91784)
- Downtown Upland and the historic core (91786)
- East Upland tracts (91785)
- San Antonio Heights border streets
- Alta Avenue and 19th Street corridors
Service Area – Cities Near Upland
While this page focuses on Upland, our insulation crews also cover the surrounding foothill and valley communities. If you’re just over the city line, we can still help: San Antonio Heights, CA on the north side, Claremont, CA to the west, Montclair, CA to the southwest, and Rancho Cucamonga, CA to the east are all within our regular service loop.
Serving Upland, CA — Our Local Coverage Area
We’re based in the Upland 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 Insulation Company in Upland
We schedule Upland estimates within a few days and installation usually starts the following week, depending on material and crew availability. Spring and fall are our busiest seasons in Upland because the weather invites attic work, so calling earlier in the week gets you in sooner. Call (877) 680-3557 and we’ll give you a firm date.
Basic attic insulation and air sealing in an existing home does not require a Upland building permit, but if your job includes adding venting or changing the attic structure, we’ll check current city requirements before we start. We handle any necessary paperwork as part of the quote so you don’t have to chase the building department.
We cover all of Upland, including 91784, 91785, and 91786, plus the streets immediately adjacent in San Antonio Heights, Claremont, and Rancho Cucamonga. No job is too small, and we don’t charge a trip fee for any Upland address. Call (877) 680-3557 to confirm your street and get a free estimate.
What happens when you call
- 1A real person answersNo phone trees — talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within the hour.
- 4You approve before work beginsNothing starts until you say go.
What Upland Customers Say
"Installed baffles at the soffits so the new insulation didn't block the ventilation, which the previous contractor apparently never considered."
— Mark Schaefer"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Beatriz Vargas"Told me the crawlspace didn't need doing and only the attic did. Half the job, half the money."
— Miguel Flores