San Fernando Valley · Climate zone 9
Attic insulation in Granada Hills, CA
Insulation, air sealing, spray foam and clean-outs for Granada Hills homes, sized for a hot inland valley climate.
Granada Hills, CA
- Climate zone
- 9
- Climate
- Hot inland valley
- Our target
- R-38 to R-49
- Electric
- LADWP
Insulating Granada Hills homes
Granada Hills is full of mid-century ranch homes, including the Balboa Highlands Eichlers with their flat roofs and post-and-beam ceilings. Flat and low-slope roofs leave little or no attic to fill, so we look at spray foam and other options for those homes rather than forcing a blown-in job that will not fit.
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 Granada Hills 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
- Balboa Highlands
- Knollwood
- Old Granada Hills
- Granada Hills North
Services in Granada Hills
What we do in Granada Hills
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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 Granada Hills say
What people tell us after the first hot afternoon — or the first cold night.
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.
They put a radiant barrier on the rafters and topped up the insulation the same day. The upstairs used to feel like an oven at 6pm. Now the AC finally shuts off at night.
We had rats in the attic for years before we bought the house. They vacuumed out all the old stuff, cleaned everything and put fresh insulation in. The smell in the hallway is completely gone.
FAQ
Insulation in Granada Hills: FAQ
What R-value should my Granada Hills attic have?
Granada Hills 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 Granada Hills?
It depends on attic size, the target R-value and whether old insulation needs to come out first. We give Granada Hills homeowners a free inspection and a written quote that lists square footage, depth and every prep item.
Are there rebates for insulation in Granada Hills?
Granada Hills homes get electricity from LADWP 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 Granada Hills?
We are based in Van Nuys and schedule inspections throughout San Fernando Valley. We can usually see you within a few days, and most installs are finished in a single day.
Also serving near Granada Hills
Free · No obligation
Book a free attic inspection in Granada Hills
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.

