Conejo Valley & Simi Valley · Climate zone 9
Attic insulation in Simi Valley, CA
Insulation, air sealing, spray foam and clean-outs for Simi Valley homes, sized for a hot inland valley climate.
Simi Valley, CA
- Climate zone
- 9
- Climate
- Hot inland valley
- Our target
- R-38 to R-49
- Electric
- SCE
Insulating Simi Valley homes
Simi Valley sits in a bowl that traps summer heat. Its huge stock of 1970s–90s single-story and two-story homes are some of the most straightforward attics we work in. A one-day blown-in top-up to R-38 or R-49 is the most common job here.
What we recommend in zone 9
Inland valley attics regularly pass 140°F in summer. We aim for R-38 at minimum and R-49 for homes with ducts in the attic or rooms that overheat, and we often add a radiant barrier. Every Simi Valley job starts with a free inspection: we measure your existing insulation, check for rodents, moisture and wiring issues, and photograph the attic so you can see it for yourself.
Neighborhoods we serve
- Wood Ranch
- Big Sky
- Indian Hills
- Mount McCoy area
- Santa Susana Knolls
Services in Simi Valley
What we do in Simi Valley
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Attic Insulation
The right material, at the right depth, for your attic — batts, blown-in or foam.
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Blown-In Insulation
A deep, even blanket across the whole attic floor, usually in a single day.
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Spray Foam Insulation
Insulation and an air seal in one, for vaulted ceilings, bonus rooms and roof decks.
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Insulation Removal & Reinstall
Old, dirty or rodent-soiled insulation vacuumed out, the attic cleaned, fresh insulation in.
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Attic Air Sealing
Close the hidden holes between your rooms and your attic before the insulation goes on.
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Radiant Barrier
Reflect the sun's heat off the roof deck before it reaches your insulation.
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Reviews
What homeowners near Simi Valley say
What people tell us after the first hot afternoon — or the first cold night.
The bonus room over our garage was unusable in summer. They sprayed foam in the ceiling and walls and it is now the most comfortable room in the house.
Friendly, on time and honest. They told us we did not need a radiant barrier and just topped up the insulation. Appreciated not being upsold.
The back bedroom used to hit 88 every afternoon in August. After they blew in the new insulation, it stays within a couple of degrees of the living room. My daughter actually sleeps in there now.
FAQ
Insulation in Simi Valley: FAQ
What R-value should my Simi Valley attic have?
Simi Valley is in California climate zone 9 (hot inland valley). For most homes here we recommend R-38 to R-49. Inland valley attics regularly pass 140°F in summer. We aim for R-38 at minimum and R-49 for homes with ducts in the attic or rooms that overheat, and we often add a radiant barrier.
How much does attic insulation cost in Simi Valley?
It depends on attic size, the target R-value and whether old insulation needs to come out first. We give Simi Valley homeowners a free inspection and a written quote that lists square footage, depth and every prep item.
Are there rebates for insulation in Simi Valley?
Simi Valley homes get electricity from SCE and gas from SoCalGas. Utility programs change often. We will tell you what we know is active and provide documentation, but always confirm eligibility with your utility.
How soon can you come out to Simi Valley?
We are based in Van Nuys and schedule inspections throughout Conejo Valley & Simi Valley. We can usually see you within a few days, and most installs are finished in a single day.
Also serving near Simi Valley
Free · No obligation
Book a free attic inspection in Simi Valley
Tell us a little about your home. We will call to set a time, inspect the attic, show you photos and give you a written quote.