Fast, Reliable Spray Foam Insulation Across Tujunga
Spray foam insulation in Tujunga typically runs $3.50 to $7.50 per board foot installed, with most whole-attic jobs landing between $4,800 and $9,200 depending on square footage and foam type. We get crews to Tujunga homes within 24 to 48 hours for standard jobs, faster for open attics. Tujunga’s canyon-side homes have a specific problem most insulation contractors never see: wind-scoured attics where loose-fill insulation drifts off the windward side and piles against the leeward slope. Closed-cell foam stops that because it adheres to the deck. Call (833) 390-3099 for a free estimate on your Tujunga home.

Why Fountain Valley Insulation Is Tujunga’s Preferred Spray Foam Insulation Company
We carry spray foam brands most general contractors can’t get. Icynene and Demilec are the two names that dominate the premium spray foam category, and we install both. That matters in Tujunga because the housing stock is older, the attics are irregular, and the wind loads are real. A crew that only knows one foam system can’t adapt when a 1940s bungalow off the 210 has knobs-and-tube wiring running through uneven bays. We can.
Nate Calloway runs our crew, and he has spent years matching materials to specific homes rather than selling whatever is on the truck. Tujunga homeowners ask us why we stock Rockwool, spray foam, and recycled fiber when most competitors carry none of them. The answer is simple: different houses, different roofs, different problems. Tujunga’s mix of 1920s cabins, mid-century ranches, and newer builds on canyon slopes means no single material fits every job. Our Spray Foam Insulation team handles the foam side, but we will tell you honestly if blown-in or batts make more sense for your specific attic.
Spray Foam Insulation Contractors in Tujunga
Spray foam insulation contractors in Tujunga handle a job that is physically demanding, technically precise, and unforgiving if done wrong. Open-cell foam in a Tujunga attic typically runs $3.50 to $5.00 per board foot. Closed-cell runs $5.50 to $7.50. Most attic jobs land between 1,200 and 2,000 board feet, so you’re looking at $4,200 to $15,000 depending on scope. The air-sealing benefits alone can cut winter heating loss through the attic by half in canyon-exposed homes. Tujunga’s ridge streets and canyon-facing slopes are exactly where this matters most.
Closed-Cell for Wind and Fire Resistance
On homes perched above Big Tujunga Canyon, we recommend closed-cell more often than not. It dries rigid, adds structural strength, and does not absorb moisture. For wildfire-interface homes in the 91042 ZIP, closed-cell also gives you an assembly that resists ember intrusion better than fiberglass batts ever could. It is not a fireproofing product on its own, but as part of a properly vented, baffled attic it is the strongest material choice available.
Open-Cell for Interior and Garage Work
Open-cell foam is softer, less expensive, and does a better job damping sound. For garage ceiling work, interior walls, and attic spaces where the roof is already well-sealed, open-cell Icynene is often the right call. In Tujunga, we use it frequently on converted garage spaces and additions from the 1960s and 1970s.
Spray Foam Attic Insulation in Tujunga
Spray foam attic insulation in Tujunga solves a specific problem: wind-driven heat loss. The canyon winds that come down through Angeles National Forest hit attic ventilations and roof decks hard. Loose-fill fiberglass blows around. Spray foam stays. For a typical Tujunga attic in a 1940s or 1950s home, closed-cell foam on the roof deck runs $5,500 to $8,000 for a 1,500-square-foot attic. Open-cell runs $4,500 to $6,500. We inspect the attic first, check for wiring issues, and tell you what actually fits your framing.
Roof Deck Application and Air Sealing
When we apply foam directly to the roof deck, we are not just adding R-value. We are sealing the attic plane against wind intrusion. In Tujunga, that matters because Santa Ana events drive air through soffit vents, gable ends, and ridge gaps. Foam eliminates those paths. We always follow the manufacturer’s venting specs and local code for wildfire-interface zones.
Rim Joist Sealing for Canyon-Side Homes
Rim joists are a chronic heat-loss point in Tujunga homes built into slopes. The joist bays where floor meets foundation are often completely unsealed. Canyon winds exploit those gaps. Closed-cell foam in the rim joist area typically runs $3.50 to $4.50 per board foot, and a full rim-joist sealing job on a 1,200-square-foot home lands between $1,500 and $2,800.

Trusted Brands We Service in Tujunga
We install Icynene and Demilec spray foam systems, and both are on our trucks for Tujunga jobs. Icynene open-cell is our go-to for interior and garage applications where sound control matters. Demilec closed-cell is what we specify for roof decks, rim joists, and wildfire-interface assemblies that need rigidity and moisture resistance. Because we also carry Owens Corning, Rockwool, and GreenFiber, we are not tied to foam when another material fits better. For Tujunga homeowners specifically, that means an honest recommendation, not an upsell. Call (833) 390-3099 and ask us which system fits your roof.
Common Spray Foam Insulation Problems We See in Tujunga Homes
- Wind-scoured loose-fill drift: After Santa Ana events, loose-fill insulation migrates to the leeward side of the attic. We commonly find bare drywall on the windward slope and 18-inch piles on the leeward side. Spray foam is the permanent fix because it does not move.
- Knobs-and-tube wiring in legacy attics: Tujunga’s 1920s through 1950s homes often have original knobs-and-tube wiring running through attic bays. Foam cannot simply be sprayed over live wiring without proper preparation. We assess every attic before quoting and will tell you if an electrician needs to address wiring first.
- Uneven framing and non-standard bays: Older Tujunga homes have attics framed with irregular spacing, additions, and converted spaces. Closed-cell foam works around these because it conforms to whatever bay it is sprayed into. Blown-in and batts leave gaps.
- Unsealed rim joists on slope-perched homes: Houses built into Tujunga’s canyon slopes lose heat through rim joist gaps that canyon winds exploit. Foam has to chase those gaps, not just cover the deck. We include rim-joist inspection on every Tujunga attic job.
Pricing for Spray Foam Insulation in Tujunga, CA
For Tujunga homes, open-cell spray foam runs $3.50 to $5.00 per board foot. Closed-cell runs $5.50 to $7.50 per board foot. A standard attic job on a 1,200 to 1,500-square-foot home lands between $4,800 and $9,200 for open-cell, and $6,800 to $12,500 for closed-cell. Rim joist sealing adds $1,500 to $2,800. Garage ceiling jobs run $2,800 to $5,500. The biggest cost drivers are roof pitch, attic accessibility, and whether knobs-and-tube wiring needs addressing first. We give exact quotes after a free attic inspection. No guesswork. Call (833) 390-3099.
We Also Serve Cities Near Tujunga
Fountain Valley Insulation serves the whole Tujunga area, including Sunland, La Crescenta-Montrose, Shadow Hills, and Burbank. If you live near Tujunga but outside the 91042 or 91043 ZIP codes, we still cover your home. Our crews know the foothill canyons, the older building stock, and the wind patterns that affect insulation performance across this whole corridor.
Serving Tujunga, CA — Our Local Coverage Area
We’re based in the Tujunga 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 Tujunga
Santa Ana winds coming through Big Tujunga Canyon create pressure differences that push loose-fill insulation from the windward side of the attic to the leeward side. We routinely find bare drywall on one slope and 18-inch drifts on the other. Spray foam solves this because it adheres to the roof deck and cannot drift. Call (833) 390-3099 for an attic inspection.
Yes, but with preparation. Open-cell foam can be applied around knobs-and-tube wiring in some cases, but closed-cell foam on live legacy wiring is a code and safety issue that may require an electrician to address first. We inspect every attic before quoting and will tell you exactly what your home needs. Call (833) 390-3099 to schedule an inspection.
Yes. Homes in the wildfire-interface zones around Tujunga benefit from closed-cell foam because it dries rigid, resists moisture, and creates a tighter assembly that helps block ember intrusion when combined with proper venting and baffling. This is not a standalone fireproofing solution, but as part of a compliant attic assembly it is the strongest material choice. Call (833) 390-3099 to discuss your specific roof.
Yes. Tujunga’s foothill elevation means cold winter nights dropping down from the mountains, not just hot San Fernando Valley summers. Many insulation contractors size only for cooling. We size for both directions. Spray foam, especially closed-cell, performs well in both heat and cold, which is why we recommend it so often for Tujunga homes. Call (833) 390-3099 for a heating and cooling load assessment.
Yes. Spray foam is applied directly to the roof deck and adheres permanently. That windward drywall that keeps going bare after every wind event gets sealed under closed-cell foam and stays covered. We have fixed this exact problem on dozens of Tujunga homes, including a 1940s bungalow off the Big Tujunga Canyon mouth where the entire windward slope was stripped bare before we got there. Call (833) 390-3099 to see what is happening in your attic.
Need an honest recommendation on spray foam for your Tujunga home? Call Fountain Valley Insulation at (833) 390-3099 for a free attic inspection and a written quote. We service all of Tujunga, including the 91042 and 91043 ZIP codes, with response times of 24 to 48 hours for most jobs.
Written by Nate Calloway, Owner at Fountain Valley Insulation, serving Tujunga and the surrounding foothill communities.