Spray Foam Insulation in Thousand Oaks, CA

Find top-rated spray foam contractors and save up to 35% on energy bills

💰 Estimated Energy Savings in Thousand Oaks

35%
Average Energy Savings
Typical range: 30% - 40%
$1,596
Estimated Annual Savings
Based on $380/month average energy cost
4 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Cold.

Verified Contractors in Thousand Oaks

True Cost Insulation

Direct: 8057931310

5
4 Google reviews

Recent Reviews:

Gabriel Hughes★★★★★6 months ago

The consultation was thorough—they explained all my options without any pressure, and helped me choose the right insulation for my home and budget. On installation day, the crew arrived on time, worked efficiently, and respected my property, leaving everything clean and tidy.

Heaven Davis★★★★★6 months ago

Since the work was completed, I’ve noticed a significant improvement in indoor comfort and energy efficiency—my HVAC system doesn’t have to work nearly as hard anymore, and my utility bills have already started dropping.

Hogan Murphy★★★★★6 months ago

Service was top..super friendly and quality of the job was even better

Best Price Insulation

Direct: 8186964154

5
4 Google reviews

Recent Reviews:

Gabriel Hughes★★★★★6 months ago

Since the installation, I've noticed a major improvement in indoor comfort and lower energy bills. My home stays cooler in the summer and warmer in the winter, just as promised.

Heaven Davis★★★★★6 months ago

From the initial consultation to the final inspection, their team was professional, knowledgeable, and incredibly respectful of my home.

Hogan Murphy★★★★★6 months ago

Consistent temperature in the house now thanks to them Definitely worth your time!

Trusted Seal Insulation

Direct: 8053986586

5
5 Google reviews

Recent Reviews:

Quintin Hoque★★★★★a month ago

We built a new home addition and knew proper insulation was critical. Trusted Seal Insulation was the obvious choice based on their reputation. They coordinated seamlessly with our general contractor and installed insulation in the walls, ceiling, and floors to the highest specifications. Their attention to detail, especially around sealing windows, doors, and penetrations, was impressive. The addition is now the most comfortable and energy-efficient part of our house. Their expertise ensured our investment was protected and performance was maximized. Outstanding service from a top-tier company.

Bentley Aryanna★★★★★a month ago

I manage several rental properties and needed a reliable, efficient insulation contractor. Trusted Seal came highly recommended, and they lived up to the hype. They assessed one of my most problematic units, provided a clear and fair quote, and completed the work ahead of schedule. The tenants immediately noticed a more consistent temperature and quieter living space. The communication from the office was excellent, and the crew was respectful of the tenant's property. This is a professional operation that delivers real results, and I will be using them for all my properties.

Eve Jayda★★★★★a month ago

We had Trusted Seal Insulation handle our attic and crawl space, and the transformation in our home's comfort is unbelievable. For years, our back rooms were freezing in winter and stuffy in summer. The team was incredibly thorough, starting with a comprehensive air seal before adding new insulation. They were punctual, professional, and left both workspaces immaculate. Our heating system no longer struggles, and we've already seen a significant drop in our energy bill. The name says it all—they are truly trusted, and the seal they created is exceptional.

E&E Attic Insulation Installation

Direct: 8187938821

4.9
30 Google reviews

Recent Reviews:

Stuart Sherman★★★★★in the last week

Joseph and team performed a full attic clean-out, asbestos ducting remediation, and installation of a new plenum and new ducts, air sealing, rodent proofing, radiant barriers and R-38 batts. This was a huge scope of work and they got it done on short notice, during the holidays and in time to claim expiring rebates and tax credits. They are very responsive and did a great job. I recommend them to neighbors and friends, and to you here. Thank you, Joseph!

Michael Clark★★★★★4 months ago

I had a fantastic experience with E&E Attic Insulation from start to finish. The team was professional, punctual, and clearly knew what they were doing. They explained the process in detail and made sure everything was done efficiently and to a high standard. What really stood out to me was how thoroughly they cleaned up afterward — it was like they were never even there! No mess, no leftover materials, just a perfectly insulated attic and a spotless workspace. If you’re looking for a company that delivers excellent work and respects your home, I highly recommend E&E Attic Insulation. They exceeded my expectations in every way.

Francisco Bringas Jr★★★★★a month ago

It was a pleasure to work with Joseph and his insulation Team. My scope of work was for insulating a cathedral ceiling.They showed up on time, stand by their work, have all of their equipment calibrated and most of all protected all surfaces and windows to avoid any overspray. Their work is flawless and cleanup after they complete their work . They provided me with a certification to show the bldg dept. For inspections. I am very satisfied with the work and would gladly recommend for anyone who is seeking a professional installation.

Conejo Services HVAC, Plumbing and Electrical

Direct: 6612103668

4.8
5 Google reviews

Recent Reviews:

Vicky Peterson★★★★★a month ago

I'm very happy with my service. I just had a furnace service, but My repair guy went out of his way to look for any recommendations and needed elements in my attic for me, was patient with all of my questions and very thorough. Very importantly to me, He was kind, nice and personal. I like to support a local company. I wanted to go with the old local one I was hesitant with Conejo services becoming much bigger - adding companies - but I have to admit, the last few people I've had with this company have been absolutely excellent. And better than many of the yahoos I'd had years ago with other local companies. Everyone on the phone has been very helpful and nice also and I always feel like i'm in good hands. It's nice to be in good hands with a long time company that you can trust. Honestly even though the company has gotten bigger, I feel like they've gotten better. And I'm still supporting a local long time company.. Thank you , fFreddy , and Conejo Services. I was actually feeling hesitant that I joined / paid to be in the member group , but after today i'm very reassured that i'm happy to have them on my side...

Jenifer Abi Hamad★★★★★a month ago

Service has been excellent for both furnace and A/C maintenance. They were extremely punctual, communicated clearly from start to finish, and made scheduling easy and stress-free. The technician was professional, knowledgeable, and took the time to explain what was being done and why. It’s rare to find a service company that’s both efficient and genuinely thorough — canejo delivered on all fronts. I highly recommend them for reliable, high-quality HVAC service.

Holly Grace★★★★★a month ago

The people at Conejo Services are absolutely wonderful! Greg Huber was amazing when working with our price range and adjusting the mini split system to our needs when I did some research to factor in what is realistically used in this size home. They answered all of the questions I asked when trying to understand things from the process, equipment used, comparisons to other companies….etc. so far everything is working great and looks fantastic. They really take pride in not just their work and “making the sale”, but in listening to their customers needs. Something that really stood out to me is when I was explaining that we are getting several quotes from other companies, they didn’t talk down about them in a way that’s just trying to say “we’re better” but with nothing to follow up. They provided comparisons of equipment to be used, workmanship, warranty and maintenance services. And advised me to look at reviews for all of them that were being consulted (and I definitely did which was SUPER helpful). I am very happy with the customer support and the care they took with my home during installation. I’ve already recommended them to a few people looking for various services. Thank you Greg, and thank you to the rest of the team that have been involved in my customer journey so far!

Frequently Asked Questions — Spray Foam Insulation in Thousand Oaks

How much can spray foam insulation save on heating and cooling bills in Thousand Oaks?
Homeowners in mixed climates like Thousand Oaks, CA typically see 20–30% reductions in total energy costs after spray foam installation. The savings come from both reduced heating in winter and reduced cooling in summer. The exact savings depend on your home's current insulation, size, and local energy rates, but most homeowners recoup the investment within 3–6 years.
Is spray foam better than fiberglass insulation for homes in Thousand Oaks?
For most homes in Thousand Oaks, CA, spray foam outperforms fiberglass significantly. Fiberglass batts insulate but do not air seal — meaning conditioned air still escapes through gaps. Spray foam both insulates and creates an airtight seal, addressing the root cause of energy loss. While spray foam costs more upfront, the performance difference in mixed climates makes it the better long-term investment for most homeowners.
Is spray foam insulation worth the cost?
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost?
Spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your location. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic costs $2,000–$6,000. Most homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor?
Look for contractors who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.