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Spray Foam Insulation in Downey, CA

Find top-rated spray foam contractors and save up to 27% on energy bills

💰 Estimated Energy Savings in Downey

27%
Average Energy Savings
Typical range: 22% - 32%
$1,134
Estimated Annual Savings
Based on $350/month average energy cost
5 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 Hot-Dry.

Verified Contractors in Downey

Overnite insulation

📞 Call Now🌐 Visit Website

Direct: 3109820210

5⭐
5 Google reviews

Recent Reviews:

Ruth Ann Barros★★★★★6 months ago

I recently spent several weeks with various sales people to review the process and cost of insulation for my home. By chance one of my neighbors was also looking and he recommended OverniteInsulation and luckily I was able to speak to Alex Zuniga the day my neighbor was getting his installation installed. Alex was kind enough to make time to come over to my house and do a walk through to provide me with a quote. I couldn't have been happier with the quote since it included removal of the old insulation, and a replacement with a quality product all of which surpassed all the quotes I had previously been given. Alex was friendly and answered all my questions about the process including the time-frame involved. His customer service certainly demonstrates the "spirit" upon which so many successful business's are dependent. It was because of his efforts to provide me with everything I needed in order to enjoy my air conditioning system all the while saving money on my monthly bill that I felt compelled to thank him formally. Alex needs to be congratulated on his policy of satisfying the customer in all situations. You can be sure I will pass the word along that OverniteInsulation provides quality service (extremely clean and organized) in addition to reasonable prices. Additionally, another neighbor connected with me and after connecting with Alex he also had his house insulated

Mariana Velandia★★★★★7 months ago

I hired the Overnite team for a project in Los Angeles, and they handled the materials and labor at a great price. They were very prompt, and I called them a day in advance and the next day they were already working on my project. Most importantly, I have no problems with air leaks because they sealed everything. They also cleaned my aunt's old attic and installed a new one.

Alondra Sanchez★★★★★4 months ago

They provide high quality work, Great price overall on time and passed inspection real fast.

Attic Chief

📞 Call Now🌐 Visit Website

Direct: 8775475037

5⭐
6 Google reviews

Recent Reviews:

Emilio Robinson★★★★★a year ago

My neighbor recommended I use Attic Chief for my insulation replacement project. Dan and the crew have been amazing, knowledgeable, explained everything, and answered all questions. The workers were great, fast, neat, and clean!! Will definitely recommend Attic Chief to anyone needing insulation replacement. Thank you, team.

Mary McDowell★★★★★3 months ago

Our attic had old insulation mixed with dust and debris. They cleared everything out before filling the entire space with blown-in insulation. They worked carefully through the narrow roof dips and reached the ridge with even coverage. It was a large attic, but they completed it without cutting corners. The air is cleaner upstairs, and the temperature stays steady day and night.

Isaac Parker★★★★★4 months ago

Heat was pouring into our second-floor bedrooms through the roof. Attic Chief installed a radiant barrier under the rafters and added spray foam near the sloped sections of the attic. It dropped the upstairs temperature and made a difference. They also fixed small gaps along the roofline that we didn’t know about. The job took a day, and they stayed on task the entire time. They handled it well from start to finish.

Cook Brothers Insulation Co.

📞 Call Now

Direct: 5627060369

3.7⭐
3 Google reviews

Recent Reviews:

Christopher Whitman★★★★★3 months ago

This year I decided to repair and insulate the facade of my house. I chose different services. These guys immediately felt my wishes. They provided an excellent plan and price offer. They started work promptly. Everything was done on time. The workers cleaned up the yard and the house. I am glad that I stopped my choice on this wonderful team.! Thank you guys again!

Barrett Gilbert★★★★★5 months ago

I really want to thank John for his work on the two wall heaters I have. I thought I would have to replace the heater, but he fixed it on the spot. He explained and demonstrated his work and made the visit a real learning experience. He is very conscientious about his work and after meeting with him I think he could fix any problem.

Daniel Soto★4 years ago

Frequently Asked Questions — Spray Foam Insulation in Downey

Does spray foam insulation work well in hot dry climates like Downey?▼
Yes — spray foam is highly effective in hot dry climates like Downey, CA. While moisture control is less of a concern than in humid climates, the air sealing properties are critical for keeping hot desert air out and cooled air in. In extreme heat climates, an unsealed attic can reach 150°F+, dramatically increasing AC load. Spray foam in the attic can reduce attic temperatures by 30–40°F.
What is the best area of my home to insulate in Downey?▼
In hot dry climates like Downey, CA, the attic is typically the highest-impact area to spray foam insulate. Desert sun heats roofs to extreme temperatures, and an uninsulated attic transfers that heat directly into your living space. After the attic, crawl spaces and rim joists are the next highest-impact areas. A local contractor can perform an energy audit to identify where your home loses the most conditioned air.
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.
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