Fast, Reliable Spray Foam Insulation Across North Hollywood
Spray foam insulation in North Hollywood typically costs $2.50 to $5.50 per square foot for open-cell and $4.00 to $8.00 per square foot for closed-cell, with most attic and crawl space jobs landing between $3,200 and $9,800 depending on square footage and access. We run crews into North Hollywood every week, and we know exactly what these Valley attics do in summer. If your upstairs rooms bake after 3 p.m. and your AC never shuts off, the problem is usually the thermal boundary above you, not the unit itself. Call (866) 271-1602 and we’ll take a look.
Why Fontana Insulation Is North Hollywood’s Preferred Spray Foam Insulation Company
Most insulation contractors walk into a North Hollywood home with one product and try to make it fit. We don’t work that way. Fontana Insulation stocks eight brands across four material categories, including Icynene and Demilec spray foam, so the recommendation comes from what your house actually needs, not what’s on our truck that day. Noel Arredondo built the company on that principle: know every material, carry the ones that earn their place, and tell homeowners the truth about trade-offs.
North Hollywood customers deal with a specific set of problems that a contractor from the Westside doesn’t see. Knob-and-tube wiring in pre-war bungalows. Flat roof sections on 1960s stucco boxes that spike past 150°F. Attics that were never vented properly in the first place. We see these every week, and we know how to spec around them. When you call us about Spray Foam Insulation, you’re talking to someone who knows the difference between a 91601 Craftsman and a 91605 tract home and why that difference changes the whole job.
We also carry Rockwool and CertainTeed for situations where spray foam isn’t the right answer. That matters in North Hollywood, where some attics shouldn’t be foamed at all without addressing wiring or venting first. Having alternatives means we’ll tell you when foam is wrong instead of selling it anyway.
Crawl Space Spray Foam Insulation in North Hollywood
Crawl Space Spray Foam Insulation in North Hollywood addresses a common discomfort problem: floors that feel cold in winter and rooms that smell musty in summer, even when the AC runs constantly. In homes across 91601 and 91605, vented crawl spaces pull hot, humid Valley air into the house all summer long. Sealing the crawl space perimeter and band joists with closed-cell foam creates a barrier that stops that air exchange. Typical cost for a North Hollywood crawl space encapsulation with spray foam runs $3,500 to $7,800 depending on square footage, access height, and whether you have a vapor barrier already in place.
When a Sealed Crawl Space Is the Right Call
Homes with pier-and-post foundations near the NoHo Arts District often have wide-open perimeter venting that floods the floor cavity with 100°F air from June through September. If you have hardwood floors that cup, or rooms that never cool at night, the crawl space is usually part of the story. Closed-cell foam on the rim joists and foundation walls cuts that heat and moisture transfer within the first week. We recommend an electrician sign-off before spraying in any crawl space with older wiring, which is common in 1920s-40s North Hollywood homes.
What We Check Before Quoting
Framing condition, access clearance, moisture levels, and whether HVAC ducts run through the space. In North Hollywood’s older stock, we often find ducts that leak conditioned air directly into the crawl space. Foam sealing makes those ducts more effective because the space around them becomes part of the conditioned envelope instead of an outdoor heat sink. The right material for your home’s specific situation depends on what we find under there.
Garage Spray Foam Insulation in North Hollywood
Garage Spray Foam Insulation in North Hollywood is about making attached garages stop cooking the rest of the house. In 91605 and 91606 stucco tract homes, attached garages with uninsulated ceilings and walls absorb heat all afternoon and radiate it into adjacent living spaces through the shared wall and the room above. Applying open-cell foam to the garage ceiling and the shared wall drops that heat transfer enough that rooms above the garage become usable in summer. Most North Hollywood garage spray foam jobs run $1,800 to $4,600, depending on ceiling size and whether the wall cavity is accessible.
Shared Wall and Ceiling Treatment
The shared wall between garage and house is the highest-impact surface in most cases. It’s also where we see the most batt insulation failures, because builder-grade fiberglass was stuffed in loosely during original construction. Knauf and CertainTeed batts have their place, but in a North Hollywood west-facing garage wall that hits 120°F by late afternoon, spray foam’s air-sealing properties outperform any batt in the same cavity. The foam fills the entire stud bay, leaving no gaps for heat to sneak through.
When Your Garage Door Is the Real Problem
Spray foam helps the ceiling and walls, but a metal garage door facing west acts like a radiant heater. We’ll tell you honestly when part of your heat problem is the door itself. Foam board on the door panels helps, but the highest-return work is usually the ceiling and the shared wall first. We quote the garage separately from the attic so you can see exactly where the money goes.
Trusted Brands We Service in North Hollywood
We install Icynene and Demilec spray foam because they’ve been performance-tested across the hottest North American climate zones, and that matters in the San Fernando Valley’s summer heat. For North Hollywood customers who need mineral wool instead, Rockwool offers fire resistance and sound dampening that most local contractors don’t stock. When fiberglass is the right call for a specific attic or wall, we carry CertainTeed and other major brands. Carrying eight brands across four material categories means we recommend based on your home’s performance needs, not our inventory pressure. You call us for a recommendation, not a sales pitch.
Common Spray Foam Insulation Problems We See in North Hollywood Homes
- Knob-and-tube wiring buried under foam. In 1920s-40s bungalows near the NoHo Arts District, we regularly flag old wiring before spraying. Foam over live knob-and-tube creates a code issue and a fire risk. We require an electrician’s sign-off before we spray those cavities.
- Flat-roof heat failure in 91605/91606. Under-ventilated flat and low-pitch roof sections in these stucco tracts regularly exceed 150°F in July and August. Closed-cell foam spcc’d without addressing venting can blister and off-gas. We check roof deck temperature and venting before recommending foam on these sections.
- Old batt insulation left under new foam. On unvented Valley roofs, leaving old fiberglass batts in place and spraying over them traps moisture against the sheathing, which drives rot. We remove failed batts before applying foam to the roof deck.
- Attic access points leaking conditioned air. Pull-down stairs, whole-house fans, and chase openings in North Hollywood attics leak cool air all summer. Foam sealing the attic floor around these penetrations costs a few hundred dollars and frequently cuts the attic’s draw on the living space immediately.
Pricing for Spray Foam Insulation in North Hollywood, CA
Here’s what we see in the North Hollywood market. Open-cell spray foam on an attic roof deck in a 1,200 to 1,600 square foot home runs $4,200 to $7,500. Closed-cell on a crawl space perimeter in a 900 square foot crawl starts around $3,500 and can reach $7,800 when access is tight and framing is irregular. Garage ceiling and shared wall work lands between $1,800 and $4,600. The main cost drivers are roof geometry (flat and low-pitch sections take more labor), crawl space access height, wiring that needs an electrician’s review, and whether we’re removing old batts first. Call (866) 271-1602 for a free on-site estimate. We walk the attic or crawl space with you, show you what we’re seeing, and quote the work with actual numbers.
We Also Serve Cities Near North Hollywood
Fontana Insulation works throughout the east San Fernando Valley. If you’re in North Hollywood or a neighboring area, we cover Studio City, Universal City, Burbank, and Valley Glen. The same crew that handles calls in 91601 and 91605 runs these nearby cities every week, and we know the housing stock in each. One call to (866) 271-1602 gets you a straight answer.
Serving North Hollywood, CA — Our Local Coverage Area
We’re based in the North Hollywood 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 North Hollywood
Yes, but only after the wiring is addressed. Spray foam performs well in 1920s-40s bungalows, but knob-and-tube wiring must be evaluated by an electrician before any foam touches the cavity. We won’t spray over live knob-and-tube, and any contractor who will is putting your home at risk. Once wiring is signed off, open-cell foam on the underside of the roof deck seals those attic cavities against Valley heat and makes a real difference in upstairs comfort. Call (866) 271-1602 and we’ll look at your specific wiring situation first.
Because their low-pitch and flat roof sections trap heat without adequate venting. These 1950s-70s tract homes regularly hit attic temperatures over 150°F in July and August, and that heat load cooks batt insulation into failure faster than anywhere else in the city. The fix is usually foam on the roof deck perimeter combined with proper intake and exhaust venting, not just more insulation on the attic floor. We spec these homes differently than a Cathedral Craftsman in 91601, because the heat problem is different.
The attic almost always comes first, because heat gain through the attic dwarfs what enters through the crawl space in North Hollywood’s climate. In homes with summertime floor temperature issues or musty smells, the crawl space matters too, but the attic is the priority for energy use and overall comfort. We’ll give you a recommendation for both, with separate line-item pricing, so you can sequence the work around your budget.
Yes, especially on the ceiling and the shared wall with the house. An attached garage with an uninsulated ceiling and west-facing wall radiates heat into adjacent rooms all afternoon. Open-cell foam on the ceiling alone can drop the temperature in the room above by several degrees in July. Garage work is also the most affordable spray foam project because the surface area is smaller. Expect $1,800 to $4,600 for most North Hollywood garages.
Usually not, and we would not recommend it on an unvented Valley roof that hits 150°F. Foam applied to an under-ventilated flat roof section without addressing airflow can blister and off-gas under that heat load. We assess the roof deck temperature and existing venting before quoting foam on these sections. Some flat sections can be foamed on the top side, but that’s a roofing project, not an insulation one. Call (866) 271-1602 for an honest assessment of your specific roof.
Get a Free Spray Foam Estimate in North Hollywood
If your North Hollywood home isn’t staying cool, or your attic feels like an oven by 2 p.m., call Fontana Insulation at (866) 271-1602. We’ll schedule a free on-site estimate, walk the attic or crawl space with you, and explain what we’re seeing in plain English. Noel Arredondo and the Fontana team have been serving North Hollywood with spray foam, attic, and blown-in insulation for years. No brand loyalty, just the best material for your home’s specific situation.
Written by Noel Arredondo, Owner at Fontana Insulation, serving North Hollywood and the San Fernando Valley.