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Downey Insulation insulates attics, crawl spaces, walls, and more across Downey and 11 surrounding communities. We help homeowners in older Southern California homes stop wasting energy and start feeling comfortable.
Downey Insulation is a full-service insulation contractor in Downey, CA, helping homeowners and businesses reduce energy costs and improve comfort. We offer 16 insulation and moisture control services across 12 cities in the greater Los Angeles area. Whether your home was built in 1955 or 1995, we assess what you have and recommend only what you actually need.
Your AC running nonstop? Spray foam seals gaps and insulates at once, cutting heat transfer at the source.
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Attic insulation stops summer heat from radiating down through your ceiling into every room below.
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Thin or missing coverage? Blown-in insulation fills every corner and irregular gap your old material missed.
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A full home insulation assessment finds every area losing energy and fixes them in a single coordinated project.
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Old, pest-damaged, or degraded insulation needs to come out before new material goes in for a clean result.
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Crawl space insulation blocks cold, damp air from rising through your floors into the rooms above.
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Drafty exterior walls waste energy year-round. Wall insulation seals that gap and keeps your rooms consistent.
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Even great insulation underperforms if air leaks go unsealed. Air sealing closes the gaps that let conditioned air escape.
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Basement insulation keeps below-grade spaces from pulling cold into the home and helps stabilize floor temperatures.
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Closed-cell foam delivers the highest insulating value per inch and also acts as a moisture barrier in humid areas.
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Open-cell foam insulates interior spaces while adding meaningful sound dampening for a quieter home.
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Commercial buildings need consistent thermal performance across large spaces. We handle offices, warehouses, and more.
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A crawl space vapor barrier stops ground moisture from rising into your framing, insulation, and subfloor.
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Properly installed vapor barriers protect your walls and floors from moisture damage that builds up unseen over time.
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Air leaks in the attic let conditioned air escape before it reaches your rooms. Sealing them makes your whole system work better.
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Retrofit insulation upgrades existing homes without major demolition, adding performance to walls and attics that were never properly insulated.
Learn MoreReach out by phone or the contact form. We ask a few quick questions - your address, your home's age, and what prompted your call. No sales pressure. We just want to understand your situation before anyone visits. Expect a response within 1 business day.
We come to your home, inspect the attic, walls, or crawl space in person, and check what insulation is already there. We look for moisture, pest damage, and air gaps - things that affect the recommendation. The visit typically takes 30 to 60 minutes and is free of charge.
Once you approve the written quote, we schedule the job and complete it - usually in a single day. Before we leave, we walk you through the finished work and confirm you are satisfied. You get documentation of what was installed and, if applicable, help applying for utility rebates.
We hold an active California contractor license and carry liability insurance on every project. You can verify our license number before any work begins - we provide it on request.
Every estimate includes a physical inspection of your attic or crawl space. There is no charge for the visit and no obligation to move forward. You get a written quote before committing to anything.
We have been serving Downey and the surrounding cities since 2015. We know the housing stock here - most of it postwar construction with insulation that is decades overdue for an upgrade.
Before we leave, we show you what was done and why. You will see the finished job, receive documentation of what was installed, and have a clear picture of the results - no guessing.
Ready to get started? Request a free estimate or call us at (562) 414-1380.
"Our upstairs bedrooms were unbearable every summer. They came out, checked the attic, and had everything done in one day. That first hot week after the job, the difference was obvious - the rooms actually held the temperature for once."
Maria G., Downey - Attic Insulation
"We had a crawl space that had been ignored for years. They pulled out the old material, put in a vapor barrier, and re-insulated the whole space. Clean work, showed up when they said they would, and explained everything before they started."
James T., Norwalk - Crawl Space Insulation
"I called three companies for quotes. These guys were the only ones who actually got into the attic before giving me a number. The estimate matched what I paid - no surprises. Would recommend to anyone in the area."
Sandra R., Bellflower - Spray Foam Insulation
We respond within 1 business day. There is no obligation after the estimate - just a free, in-person look at your home and a written quote. After you submit, someone from our office will call to schedule a free on-site visit at a time that works for you.
Downey Insulation serves homeowners and businesses in Downey and 11 surrounding communities across Los Angeles County, including Compton, Norwalk, Bellflower, and Whittier. We cover all 12 service areas and can typically schedule an estimate within the same week you call.
Attic temperatures in the Los Angeles Basin regularly exceed 140 degrees on hot days - and all of that heat pushes down through your ceiling into your living space. Proper attic insulation acts as a barrier that slows that transfer significantly. The Downey climate makes attic insulation one of the highest-return investments a homeowner can make.
Most of the homes built in Downey and surrounding cities in the 1950s and 1960s were constructed with minimal insulation by today's standards. California's energy codes have been updated significantly since then. A home that met the requirements in 1965 is well below what is considered adequate today, which is why so many older Southern California homes are prime candidates for upgrades.
Spray foam seals and insulates in one step - it is the better choice when air gaps are part of the problem. Blown-in insulation adds depth to existing coverage quickly and is well-suited for accessible attics. In most cases, a contractor will recommend one or a combination of both based on your home's condition and where the heat loss is happening.
Yes. The U.S. Department of Energy estimates that proper insulation and air sealing can reduce heating and cooling costs by up to 15 percent. In Downey, where air conditioning runs from May through October, that reduction adds up meaningfully. Southern California Edison also offers rebates for qualifying upgrades - ask your contractor about eligibility before work begins. Learn more at the U.S. Department of Energy.
Old insulation that has been wet, compressed by pests, or degraded no longer performs. In some cases it can harbor mold or allergens. Before new insulation goes in, a responsible contractor will inspect for these issues and recommend removal if needed. Skipping this step means new material goes on top of a problem that will not go away on its own.
The most telling signs are ones you can feel: rooms that are hard to cool in summer, an AC that runs constantly, or noticeably uneven temperatures between rooms. You can also look into your attic - if the wooden floor joists are visible above the insulation, the coverage is too thin. A contractor can give you a precise assessment during a free in-home visit.
Downey Insulation is a licensed and insured insulation contractor based in Downey, CA, serving Downey and 11 surrounding cities since 2015. We hold an active California contractor license issued through the California Contractors State License Board, which oversees licensing for all home improvement contractors operating in the state. We carry liability insurance on every project.
Since 2015, we have completed insulation projects across 12 cities in Los Angeles County, working on everything from 1950s postwar ranch homes to commercial buildings. Our team offers 16 distinct insulation and moisture control services, covering attics, walls, crawl spaces, basements, and more.
Want to learn more about how we work? Read about our approach or get in touch to schedule a free estimate.
Attic floor insulation keeps conditioned air in your living space. Roof deck insulation is typically used when you are converting attic space or using spray foam to create a sealed attic. Most Downey homes benefit most from attic floor coverage first.
Most homeowners notice a difference within the first full billing cycle after the job is complete. In Downey, where air conditioning runs hard from May through September, the impact shows up quickly during the cooling season.
Insulation timing matters. It should go in after framing and rough-in work is complete but before drywall goes up. If your contractor is coordinating multiple trades, confirm insulation is on the schedule before the walls close.
Still have questions? Call us directly at (562) 414-1380 or send us a message and we will get back to you within 1 business day.
Downey is a city of about 113,000 residents in Los Angeles County, sitting between the 5 and 605 freeways and surrounded by cities like Norwalk, Bellflower, and Paramount. Most of the city was built out in the 1950s and 1960s, which means the majority of homes are now 60 to 70 years old - a generation of housing built before modern insulation standards existed. Many of these homes have original insulation that has settled, degraded, or never been upgraded since the day they were built.
The city has a strong local identity rooted in its aerospace history. The Columbia Memorial Space Center sits on the former Rockwell International site where the Space Shuttle was built. Downey is also home to the oldest surviving McDonald's restaurant in the world, open since 1953 - a landmark nearly every local recognizes. The city's Downey Avenue corridor and downtown area run through the heart of the city, lined with local businesses and the historic Downey Theatre.
Downey's summer temperatures regularly climb into the mid-90s, and many of the city's postwar ranch-style and stucco homes are not equipped to handle that heat load without a well-functioning insulation system. According to the U.S. Census Bureau, about 52 percent of housing units in Downey are owner-occupied - homeowners who invest in maintaining and improving properties that now carry a median value of around $650,000 to $700,000. Downey Insulation has been working on homes throughout Downey since 2015, and we understand the housing stock here firsthand.
By appointment only, no walk-ins.
Downey Insulation
11841 Horton Ave
Downey, CA 90241
Always open, 24/7.
Call Downey Insulation today for a free, no-obligation estimate and find out exactly what your Downey home needs.