Fast, Reliable Spray Foam Insulation Across Inglewood
Spray foam insulation in Inglewood typically runs $2,200 – $6,800 for a standard attic or wall project, depending on whether you choose open-cell or closed-cell foam. Homes under the LAX flight path almost always get spec’d for closed-cell, because it adds acoustic mass that open-cell cannot match. If you live in 90306, 90307, 90308, or 90309 and you’re tired of jet rumble bleeding through your ceiling and walls, call Airtight Insulation Co at (833) 390-7079. We’re in Inglewood the same week you call, often sooner.
The homes here weren’t built with LAX in mind. That’s a fact of life in Inglewood, and it changes how we spec every foam job. More on that below.
Why Airtight Insulation Co Is Inglewood’s Preferred Spray Foam Insulation Company
Ruben Acosta founded Airtight Insulation Co with a simple rule: the job picks the product, not the other way around. We stock eight manufacturer brands across fiberglass, mineral wool, spray foam, and cellulose, so when we walk into a 1950s stucco home near Van Ness or a low-rise apartment building off Century Boulevard, we’re not forcing one foam into every situation. We carry open-cell and closed-cell formulations through Icynene and Demilec specifically because Inglewood demands both, depending on whether airborne noise or thermal performance is the bigger issue.
Inglewood homeowners call us for one reason more than any other: they’ve had an insulation job done before and it didn’t change anything. Thin batt insulation in a mid-century attic does nothing for a jet flying overhead at 3,000 feet. When we open those attics, we usually find the original insulation from the Truman or Eisenhower era, settled to half its rated depth. That’s not an R-value problem. It’s an air-sealing and acoustic-mass problem, and those are exactly the jobs our Spray Foam Insulation team handles most.
We’ve worked in every Inglewood zip code, from the residential blocks off Prairie Avenue to the apartment corridors near the Forum. Local knowledge means we know which homes have original knob-and-tube wiring to work around, which 1940s builds have zero wall insulation at all, and which ones have crawl spaces that trap marine-layer moisture. That’s the kind of thing you only learn by doing the work here, repeatedly.
Open Cell Spray Foam in Inglewood
Open Cell Spray Foam in Inglewood is our most commonly installed option for attic ceilings and interior walls where the goal is air sealing and thermal consistency, not soundproofing. The foam expands to roughly 100 times its liquid volume, filling stud and rafter bays completely, and it costs $1.90 – $3.10 per board foot installed. For a typical Inglewood attic of 1,000 – 1,500 square feet, expect $2,800 – $4,600. It’s not the acoustic heavyweight that closed-cell is, but it’s the right call when you’re chasing energy loss through the ceiling rather than flight-path noise through the walls.
Open-cell has another advantage here: it breathes better than closed-cell, which matters when the marine layer sits on Inglewood for nine straight mornings. It allows the assembly to dry when condensation forms, which is why we prefer it for interior partition walls and cathedral ceilings in the older homes near Centinela Avenue.
Attic Lids and Crawlspace Caps
Most Inglewood attics we open are under-insulated by modern standards, with gaps at every plumbing stack and wire chase. Open-cell foam seals those bypasses in one pass. We also use it to cap crawlspace floors and rim joists under the 1940s and 1960s tract homes where fiberglass has fallen or been trampled by years of electrical and plumbing work.
When Open-Cell Is Not Enough
If you live directly under the approach path near Westchester Boulevard or Manchester Avenue, open-cell alone will disappoint you. Open-cell has an STC rating roughly one-third lower than closed-cell, and it’s the acoustic ceiling material you’re paying for in those homes. We’ll tell you that before you spend a dollar.
Spray Foam Insulation Contractors in Inglewood
Spray Foam Insulation Contractors in Inglewood are not hard to find, but the experience gap between a generic installer and a company that actually understands this city’s acoustic problem is wide. Airtight Insulation Co sends a single crew who can install open-cell, closed-cell, blown-in cellulose, or mineral wool in a single visit. You don’t coordinate three subs. We handle the attic, the walls, and the rim joists in one trade.
Closed-cell foam in Inglewood runs $2.90 – $4.50 per board foot installed. That’s the price for a product that adds structural racking strength and creates a true vapor and air barrier at two inches. For the 1940s – 1960s wood-frame and stucco homes that make up so much of Inglewood’s housing stock, closed-cell in the exterior walls is the single highest-impact improvement you can make, and it’s the detail that separates a real acoustic retrofit from a cosmetic one.
Wall Cavities Built Before Insulation Was Code
Homes built before the 1970s energy codes often have empty wall cavities. In Inglewood, that means marine-layer moisture migrating through stucco finds a path straight into the living space. Closed-cell foam stops that. The same two inches that kills the jet noise also blocks the moisture drive that feeds the musty smell so many homeowners near Hyde Park accept as normal.
Rim Joist and Garage Ceiling Detailing
The rim joist is the single most overlooked air leak in any raised-foundation Inglewood home. We typically foam it with closed-cell and move on to the garage ceiling if there’s a bedroom above. It’s detail work, but it’s the difference between a job that tests tight and a job that actually is.
Trusted Brands We Service in Inglewood
Airtight Insulation Co doesn’t push a single product line. We install foam from Icynene and Demilec because those two brands cover the open-cell and closed-cell formulations that Inglewood’s building types demand. We also carry Owens Corning and Johns Manville batt products for the portion of a job where fiberglass genuinely is the right material, and GreenFiber blown-in cellulose for attic top-ups on non-acoustic jobs. We keep a full stock of two-component closed-cell kits and open-cell drums ready for Inglewood work, so a mid-project material run doesn’t stall your schedule. One contractor, eight brands, Inglewood homeowners get the material that matches the wall, the attic, and the noise level.
Common Spray Foam Insulation Problems We See in Inglewood Homes
- Unsealed wall cavities behind original stucco. In the 1940s – 1960s tract homes around Arbor Vitae and Crenshaw Boulevard, the original construction never included wall insulation. Marine-layer condensation wicks through the stucco and framing where foam was never applied. Closed-cell foam retrofitted into those cavities stops both the moisture and the flight-path noise.
- Thin or settled attic insulation that does nothing for noise. We regularly open mid-century attics to find three or four inches of compressed fiberglass that’s been there since Eisenhower was president. It has almost no acoustic value. Homeowners near the LAX approach are paying for conditioned air that leaks straight through the ceiling and hearing every 737 passing overhead.
- Foam sprayed without addressing single-pane window gaps. Spray foam is not a magic fix for a 1950s original single-pane window with worn-out glazing putty. If you foam the walls but leave the windows gaping, you’ve spent thousands on a 30 percent fix. We flag this before we foam, and we’ll coordinate window sealing with the same scope.
- Foam applied over old vents and bypasses. Older Inglewood homes were built with passive attic vents, bath fans that dump into the attic, and plumbing chases that run from crawlspace to attic. If foam goes over those without addressing the air path, you’ve sealed the wrong thing. We locate and remediate the bypass before the gun ever starts spraying.
Pricing for Spray Foam Insulation in Inglewood, CA
Here are direct numbers for Inglewood work. A full attic retrofit with open-cell on a 1,200-square-foot mid-century tract home runs $3,200 – $4,800. Closed-cell on the same ceiling runs $4,200 – $6,400. Exterior wall retrofit with closed-cell runs $8,000 – $14,000 for a typical two-bedroom Inglewood bungalow, depending on how much of the stucco and lath has to be cut and patched. A garage ceiling over a living space runs $1,400 – $2,600. Rim joist work around a raised foundation runs $900 – $1,800.
Those are installed prices, not material-only quotes. What moves the final number: access (crawl space vs. attic with no walkway), how much old material has to be removed first, and whether we’re drilling and filling the wall cavities or pulling the drywall. Every estimate is free and comes with a written scope, not a handshake. Call (833) 390-7079.
We Also Serve Cities Near Inglewood
Airtight Insulation Co handles spray foam work in Spray Foam Insulation in Inglewood‘s surrounding communities too, including Hawthorne, Del Aire, Lennox, and Alondra Park. Same crews, same eight-brand material selection, same week-turnaround. Not every home near the flight path is in Inglewood proper, and we spec them the same way we do here.
Serving Inglewood, CA — Our Local Coverage Area
We’re based in the Inglewood 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 Spray Foam Insulation in Inglewood
Yes, but only closed-cell foam at two inches or more of full contact will meaningfully reduce aircraft noise, and only when it’s applied to the wall cavities and the attic deck as a continuous air and acoustic barrier. Open-cell foam in the ceiling alone will not make a noticeable dent in the flight-path rumble. In Inglewood homes directly under the approach to LAX, we routinely see closed-cell wall retrofits drop interior jet noise by a measurable, feel-it-in-the-room amount. Call (833) 390-7079 for an on-site assessment, because the right application depends on your distance from the flight path and your wall construction.
Closed-cell spray foam is safe and code-compliant in those cavities when installed by trained professionals, which matters because 1950s stucco homes near the airport often have unvented wall assemblies that trap moisture if the wrong product is used. Closed-cell at two inches acts as a vapor barrier, stopping the marine-layer moisture drive that feeds the mold smell so many Inglewood homes have. We’ve done this exact retrofit on 1950s wood-frame and stucco tract homes off Arbor Vitae near the airport. The job requires professional mixing, application, and cure-time monitoring. Call (833) 390-7079 for a wall inspection and a straight answer on whether your cavities are candidates.
Closed-cell spray foam does, specifically by stopping the moisture drive through unsealed wall and ceiling cavities that makes Inglewood homes feel clammy on overcast mornings. The marine layer pushes moist air against your stucco and finds every unsealed path into the wall assembly. Closed-cell foam creates a continuous air and vapor barrier that blocks that path. Open-cell foam does not act as a vapor barrier, so for humidity control we recommend closed-cell on the exterior walls and rim joists, while open-cell works fine in interior assemblies that stay warm year-round.
Open-cell foam is lighter, less expensive, and expands more, making it good for interior walls and attic ceilings where air sealing matters more than moisture control. Closed-cell foam is denser, creates a vapor barrier, adds structural strength, and cuts sound transmission much more effectively, which is why we spec it for exterior walls and attic decks in homes under the LAX flight path. In an Inglewood home with original single-pane windows and unsealed wall cavities, closed-cell on the walls is the upgrade you’ll feel in both the noise level and the monthly energy bill.
No, spray foam cannot be applied over existing fiberglass or cellulose. The old material has to come out first, or at minimum be pulled back from the areas being foamed, because foam needs direct contact with the attic floor or roof deck to form its air seal. We see this on nearly every mid-century Inglewood tract home we open: a few inches of settled, mouse-tracked fiberglass from the 1950s or 1960s. We remove it, air-seal the bypasses, and then spray. The removal adds to the scope, but it’s the difference between a job that works and a job that just looks new.
Call Airtight Insulation Co for Spray Foam in Inglewood
If you live under the flight path, in a 1940s stucco bungalow off Manchester, or in a 1960s tract home off Prairie, we can tell you exactly what your walls and ceiling need and what it’ll cost before you commit to anything. Estimates are free and the number is (833) 390-7079.
Written by Ruben Acosta, Owner at Airtight Insulation Co, serving Inglewood and the surrounding South Bay area.