Santa Clarita & Antelope Valley · Climate zone 9
Attic insulation in Castaic, CA
Insulation, air sealing, spray foam and clean-outs for Castaic homes, sized for a hot inland valley climate.
Castaic, CA
- Climate zone
- 9
- Climate
- Hot inland valley
- Our target
- R-38 to R-49
- Electric
- SCE
Insulating Castaic homes
Castaic homes sit in the hills by the lake, with hot, dry summers and chilly winter nights. Many were built in the 1990s and 2000s with the minimum insulation code allowed at the time, which has since settled. Topping up to R-38 or R-49 makes a clear difference in both seasons.
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 Castaic 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
- Castaic Lake area
- Hasley Canyon
- Live Oak
- Northlake
Services in Castaic
What we do in Castaic
-
Attic Insulation
The right material, at the right depth, for your attic — batts, blown-in or foam.
Learn more
-
Blown-In Insulation
A deep, even blanket across the whole attic floor, usually in a single day.
Learn more
-
Spray Foam Insulation
Insulation and an air seal in one, for vaulted ceilings, bonus rooms and roof decks.
Learn more
-
Insulation Removal & Reinstall
Old, dirty or rodent-soiled insulation vacuumed out, the attic cleaned, fresh insulation in.
Learn more
-
Attic Air Sealing
Close the hidden holes between your rooms and your attic before the insulation goes on.
Learn more
-
Radiant Barrier
Reflect the sun's heat off the roof deck before it reaches your insulation.
Learn more
Reviews
What homeowners near Castaic say
What people tell us after the first hot afternoon — or the first cold night.
Two-story house in Valencia, upstairs was always ten degrees hotter. Radiant barrier plus blown-in fixed it. Our July bill was noticeably lower than last year.
Desert summers and cold winters, and our attic had maybe four inches. They brought it up to R-49 and sealed everything. The house holds its temperature in both seasons now.
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 Castaic: FAQ
What R-value should my Castaic attic have?
Castaic 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 Castaic?
It depends on attic size, the target R-value and whether old insulation needs to come out first. We give Castaic homeowners a free inspection and a written quote that lists square footage, depth and every prep item.
Are there rebates for insulation in Castaic?
Castaic 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 Castaic?
We are based in Van Nuys and schedule inspections throughout Santa Clarita & Antelope Valley. We can usually see you within a few days, and most installs are finished in a single day.
Also serving near Castaic
Free · No obligation
Book a free attic inspection in Castaic
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.