Wall insulation in Cerritos CA - walls filled full so rooms hold their temperature
Rooms that feel drafty or run hot in summer usually have thin or empty walls. We fill them full so the house holds its temperature.
Can you insulate the walls in a house that's already built?
Wall insulation in Cerritos puts insulating material into the spaces between the studs inside your walls, so your rooms hold their heat or cool longer and less outside noise gets through. In a finished house it usually goes in through small holes, not open walls.
Most calls start with a room that won't stay comfortable. It might be a bedroom on an outside wall that's cold in the morning, or the room over the garage that bakes in August even though the attic above it has plenty. When the attic insulation is already right, the walls are usually what's left.
The price turns mostly on how many square feet of wall we're filling, whether the walls are finished or open, and how many cavities are closed off by built-ins and need their own holes. The schedule turns on the city's approvals and on clearing furniture away from the walls we're working on, and your written estimate lays out each step in order for your house. We're based in Cerritos and work in many cities around it in Los Angeles and Orange counties, so if yours isn't listed, just ask.
- Finished walls get filled through small holes, so the drywall or stucco stays where it is.
- Outside walls help with comfort, and inside walls help when you want a quieter bedroom.
- We drill from inside or outside, whichever means less patching on your particular walls.
What happens after you call about your walls?
I'm the one who comes out and writes the estimate, and our installers do the work. Here's how a wall job runs from your first call to the walkthrough at the end.
Call or send a message
Call (562) 307-9067 or use the form, and we'll set a time for me to come out. A rough idea of the wall area in square feet, plus any built-in shelves or cabinets, helps me plan the visit.
I measure and write it up
I come out myself, measure the walls and take photos, so the numbers on your estimate match the house you actually have. You get it in writing, with each step listed in the order we'd do it.
We fill and patch the walls
On the day, our installers protect the floors and furniture near the work, fill each cavity and patch the holes. Cerritos allows construction from 7 a.m. to 6 p.m. on weekdays and 10 a.m. to 5 p.m. on Saturdays, with none on Sundays or city holidays unless the city approves other hours in writing, so we book your job inside those hours.
I check the work with you
Before we call it done, I go over the walls with you room by room and look at the patches and the fill. If anything looks off to you, that's the time to point it out.
Insulation work inside walls, attics and crawl spaces
These photos show insulation work across the trade, from wall cavities to attics and crawl spaces. They're general pictures, not of any one house, so use them to see what the materials and a finished job usually look like.
Fresh spray foam coats the ceiling and wall framing beside large windows overlooking a snowy yard.
Crawl space with pink insulation between floor joists and white vapor barrier across the floor and lower walls.
Pink batt insulation fills the spaces between vertical wooden wall studs.
Pink blown-in insulation covers an attic floor beneath exposed wooden trusses and beside flexible ducts.
Yellow fiberglass insulation fills the sloped ceiling between metal supports in an attic.
White spray foam covers attic rafters and roof surfaces around exposed wooden trusses and utility pipes.
Get a written estimate for insulating your walls
We reply within one business day to set up a free visit at your home, and there's no obligation. After you send the form, I come out, measure your walls and give you the estimate in writing, step by step.
(562) 307-9067Questions about insulating walls in Cerritos
Here are questions we hear from homeowners before they insulate their walls. If yours isn't here, call and ask, and I'll give you a straight answer.
How much does wall insulation cost in the Los Angeles area?
Insulating walls in the Los Angeles area usually costs about $1 to $4 per square foot of wall. That's the going range in the market, not a quote, and your written estimate puts a number on the walls you actually have.
What is the best way to insulate existing walls?
For an older home with empty wall cavities in a temperate climate, drill and fill is a common way to do it, where small holes are drilled, insulation is blown in and the holes are sealed. The walls stay up, so you aren't paying to tear out and replace drywall.
Who can legally insulate walls in California?
In California, insulation work falls under the state licensing board's C-2 Insulation and Acoustical Contractor license, which covers installing any insulating material for temperature or sound control. Someone without a license can take a job only if it's up to $1,000, needs no permit and they employ no one on it, and that limit used to be $500. We're fully licensed and insured.
Do I need to check with the city before insulating walls in Cerritos?
It's worth checking first, because for projects not on its list, Cerritos asks owners to call the Department of Community Development at (562) 916-1201 for the city's requirements. We check with the city before we set a start date, and when your job needs a permit, we handle the paperwork and the inspection.
What R-value does California require for walls?
California's energy code manual gives R-15 as the minimum for above-ground 2x4 wood-framed walls and R-21 for walls framed with 2x6 or larger. R-value is how well insulation slows heat, and how those minimums apply to a wall that's already built is something I'll explain once I've seen yours.
How do I tell if my walls have insulation in them?
The sure way is to look inside a cavity, because a wall can look and feel fine and still be empty. Outside walls that feel cold in winter or warm in summer, and an older house, are the usual hints, and I check a few cavities at the estimate visit.