
French Valley Insulation handles spray foam, attic, blown-in, and more - so your home stays comfortable all year without your AC running nonstop.

French Valley Insulation is a licensed insulation contractor serving French Valley, CA and the surrounding Inland Southern California area. We offer 16 insulation services - from spray foam and attic insulation to vapor barriers and commercial work - covering 12 cities across Riverside County. Whether your home is losing air through the attic or your crawl space is letting moisture in, we find the source of the problem and fix it properly.

Tired of rooms that never cool down? Spray foam seals gaps and insulates at the same time, so your AC finally keeps up.
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Attic temperatures can hit 150 degrees in summer. Proper attic insulation stops that heat before it reaches your ceiling.
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Blown-in insulation fills every gap in your attic floor, delivering consistent coverage that batts and rolls simply cannot match.
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From attic to crawl space, whole-home insulation stops heat in every season and cuts the load on your HVAC year-round.
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Old, wet, or pest-contaminated insulation does more harm than good. We remove it cleanly so new material can do its job right.
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Uninsulated crawl spaces let cold air, moisture, and pests in under your floors. Insulating them makes the whole house feel better.
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Thin wall insulation means noise from outside and temperature changes pass right through. We add coverage without tearing up your home.
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Even great insulation underperforms if air still leaks through gaps. Air sealing closes those pathways so insulation can work as intended.
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Basement walls and rim joists are common heat-loss spots. Insulating them keeps floors warmer and reduces drafts at ground level.
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Closed-cell foam delivers twice the R-value per inch of open-cell and doubles as a moisture barrier - the right choice for tight, wet spaces.
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Open-cell foam expands to fill every cavity in your attic or walls, adding insulation and sound dampening in a single application.
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Warehouses, offices, and retail spaces lose energy fast without proper insulation. We handle commercial jobs of all sizes.
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Ground moisture under your crawl space causes mold, wood rot, and musty air. A vapor barrier stops it at the source.
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A properly installed vapor barrier protects your floors, framing, and insulation from ground moisture for years to come.
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Air escaping through your attic floor is one of the biggest efficiency leaks in most homes. We seal it before adding insulation.
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Existing home with outdated insulation? Retrofit upgrades add new material inside your walls and attic without a full renovation.
Learn MoreTell us about your home and what you are noticing - high energy bills, rooms that never cool down, or a crawl space you have concerns about. We respond within 1 business day to schedule a free on-site estimate at a time that works for you.
One of our technicians comes to your home, inspects the areas in question, and measures what is already there. You get a written quote that covers everything - materials, labor, and any prep work needed. No pressure, no upsell, just a clear picture of what your home needs.
Our crew arrives, seals air gaps first, then installs the insulation to the correct depth for your space and climate zone. Before we leave, we walk you through the finished work, answer your questions, and give you documentation of what was installed - useful for rebate claims and future home sales.
We hold a current C-2 Insulation and Acoustical contractor license issued by the California Contractors State License Board, plus general liability and workers comp coverage on every project.
We come to your home, inspect the space, and give you a written quote - no charge and no pressure. You have all the information you need to decide, with zero commitment required.
We have worked in this area since 2016 and know the housing stock, the Riverside County permit process, and the local conditions that affect how insulation performs here. This is our home too.
If coverage is uneven or a spot was missed, we return and fix it at no cost. We document every job with photos and depth measurements so you have proof of what was done - not just our word for it.
Questions before you commit? Call (951) 593-1138 or send us a message.
"Our upstairs bedrooms were unbearable every summer. The crew came out, did the attic the same week we called, and the difference was noticeable within two days. Our AC has not run as hard since."
Marcus T., Murrieta - Attic insulation
"We had an old crawl space with no vapor barrier and moisture issues every winter. They removed the old material, installed a proper barrier, and walked us through everything. Clean, on-time, and no surprise charges."
Diane R., Temecula - Crawl space vapor barrier
"Had spray foam done in the garage walls and the attic hatch area. The estimator explained exactly what type of foam was right for each spot and why. The quote was detailed, the job was done in one day, and the house is noticeably quieter too."
Kevin L., Menifee - Spray foam insulation
We respond within 1 business day and there is no obligation to move forward. After you submit the form, someone from our office will call you to schedule a free on-site estimate at a time that works for your schedule.
(951) 593-1138French Valley Insulation is based in French Valley, CA and serves 12 communities across southwestern Riverside County, including Murrieta, Temecula, and Menifee. We offer same-week scheduling for most residential jobs and know the roads, neighborhoods, and local permit requirements in every area we serve.
A poorly insulated attic can reach 150 degrees on a hot afternoon and radiate that heat into your living space for hours after the sun goes down. Adding insulation to the recommended depth for your climate zone is the single most effective way to reduce heat gain and lower your cooling costs.
Air leaks and thin insulation both waste energy, but air leaks tend to have a bigger immediate impact because they let outside air move freely in and out. The U.S. Department of Energy notes on its Energy Saver air sealing guide that sealing air leaks before adding insulation delivers the greatest combined benefit.
In most cases, new insulation can go right on top of existing material. Removal is only necessary when the old insulation is wet, moldy, or contaminated by rodent activity. If you have had a pest problem or noticed a musty smell from your attic, have a contractor inspect before adding anything new.
Closed-cell foam is denser and adds a moisture barrier - the right call for crawl spaces and exterior walls. Open-cell foam is lighter and works well in interior attic spaces where moisture is not a concern. The choice depends on the space, not just preference - a good contractor should explain the reasoning before recommending one.
Blown-in cellulose typically lasts 20 to 30 years before settling significantly reduces its effectiveness. Fiberglass batts can last longer but lose performance if they get wet or are disturbed. Homes 15 or more years old without an attic inspection are good candidates for a quick check - the inspection itself is free with most estimates.
Spray foam excels in tight or irregular spaces like crawl spaces, rim joists, and garage walls because it expands to fill every gap. Blown-in is faster and more cost-effective for large open attic floors. Many homes benefit from both - spray foam in hard-to-reach areas and blown-in across the attic floor.
French Valley Insulation is a licensed insulation contractor based in French Valley, CA, serving 12 communities across southwestern Riverside County since 2016. We hold a current C-2 Insulation and Acoustical license issued by the California Contractors State License Board, and carry general liability and workers compensation insurance on every job.
Since 2016, we have completed insulation projects across 16 service types - from standard attic blown-in jobs to spray foam, vapor barriers, and commercial work. We know this housing stock, the local permit process through Riverside County Building and Safety, and the climate conditions that determine how insulation performs here.
Want to learn more about who we are and how we work? Visit our About page.
Possibly. Homes built in the early 2000s were often insulated to the minimum code requirement at the time, which is lower than what is recommended today. Add 15 years of settling and the occasional pest intrusion, and there is a good chance your attic is underperforming. A free inspection will tell you exactly where you stand.
You still get some benefit, but not the full return. Think of it like putting a thick blanket on a bed with holes in it - the blanket slows things down, but air still moves through the gaps. Sealing first, then insulating, is the correct sequence and delivers the best combined result. The Building Science Corporation documents this extensively in its research on building envelopes.
Yes - especially when combined with thorough air sealing. Smoke and fine dust enter homes through gaps in the attic around light fixtures, plumbing penetrations, and framing joints - not just through windows and doors. Sealing those gaps reduces how much outdoor air gets pulled in during a smoke event, which matters in this part of Southern California.
Ready to find out exactly what your home needs? Call us at (951) 593-1138 or request a free estimate online.
French Valley is an unincorporated community in western Riverside County that has grown quickly over the past two decades. Most homes here were built between the 1990s and early 2010s during Southern California's inland housing boom - which means a lot of families are now living in houses that are 15 to 30 years old and due for their first serious insulation review. The community sits just north of Murrieta and a few miles from Temecula, and many residents identify strongly with the French Valley area as a distinct community within Riverside County.
The climate here drives a lot of the insulation work we do. Summer temperatures in French Valley regularly climb above 95 degrees and occasionally top 100, according to the National Weather Service San Diego office, which covers this area. That kind of heat radiates through poorly insulated attic floors and pushes into living spaces all afternoon and evening. Fall brings Santa Ana wind events that deposit ash and push smoke into homes through gaps in the building envelope. French Valley Airport (F70), operated by Riverside County Parks, is one of the most recognizable landmarks in the community, and most of the neighborhoods we work in are clustered along the Winchester Road corridor nearby.
Most homes in French Valley are owner-occupied single-family houses on modest lots, and homeowners here tend to stay and invest in their properties. The area is served by Southern California Edison and SoCalGas - both of which offer rebate programs for qualifying insulation upgrades that can meaningfully offset project costs. Permits for insulation work in French Valley are handled through Riverside County Building and Safety rather than a city building department, since French Valley is an unincorporated community. We know this process well and handle permit coordination when it is needed. If your home is in one of the subdivisions off Winchester Road or near the airport, we have likely worked on a house just like yours.
By appointment only, no walk-ins.
French Valley Insulation
31382 Cookie Rd
French Valley, CA 92596
Call French Valley Insulation for a free on-site estimate and find out exactly what your home needs to stay comfortable year-round.