Wall insulation in Bakersfield CA - every cavity filled tight, top to bottom
Rooms that feel drafty or never cool down, even with the attic done? We fill closed walls so the whole house holds temperature.

What does wall insulation do for a house that's already built?
Wall insulation in Bakersfield fills the empty space inside your outside walls, so the rooms along them stop swinging hot and cold, and on a finished house we can usually do it without taking a wall down.
Most people who call me about walls have already done the attic and still have a room that won't hold temperature, usually one with a lot of outside wall. The price mostly comes down to how many walls we fill and which side we get into them from, and the schedule mostly turns on what an older house needs sorted first and whether there's a permit to deal with. I'll tell you which walls are worth doing and which aren't, and your estimate gives you that list with a price on it.
What happens after you call us about your walls?
Call or send a request
Call (661) 377-0037 or use the form and tell us which rooms bother you. We'll set a time for me to come out.
I look at your walls
I do the estimate myself, so I go up in the attic or under the house, check how your walls are built and sided, and show you what I found. You get which walls I'd fill, which side we'd work from and what it costs.
Permit and prep come first
If you go ahead, we sort out the permit question and take care of prep and any repairs before a single hole gets drilled. The city's Development Services Department takes permit payments weekdays from 8 a.m. to 4:45 p.m., holidays excepted, so that part moves on weekdays.
Install and final check
Our installers fill the walls and patch the holes. I look the work over myself before we call it done.
How we do wall insulation
By the time our crew shows up, I've already checked the wiring and the siding, so they know which walls get filled and which side we work from, and that choice depends on your siding and what's under it. We cover the floors, keep the dust contained, drill the holes and blow fill into each cavity until it's packed tight, because a wall that's only half full is barely worth doing. Then we check every filled wall with a thermal camera, which shows an empty pocket as a patch of different color, and we go back to any spot that isn't full before we patch the holes. Nobody's ever thanked us for a wall that's snug at the bottom and empty at the top.
Walls are one piece of it. Air also slips in around outlets, pipes and the attic hatch, so a lot of wall jobs go better paired with air sealing services that close those gaps before the fill goes in. If your house has a basement, basement insulation is its own job, because walls below ground take a different approach than the ones we fill upstairs.
Get a wall insulation estimate at your home
Send the form and we'll get back to you within one business day to set a time. I come out myself, look at your walls and attic, and give you a free estimate with no obligation.
Wall insulation questions from Bakersfield homeowners
Can existing walls be insulated without opening them up?
Yes, most finished walls can be filled without opening them, using a method called drill and fill. Small holes go in near the top of each wall cavity, the space between two studs, and loose insulation gets blown in through a hose until it's packed. Packed dense, it gets into odd-shaped corners and slows air moving through the wall, not just heat.
What is the best way to insulate walls, from inside or from outside?
It depends on your siding and the layer under it. Going in from outside breaks into the house wrap or other weather layer behind the siding, which then has to be patched or replaced, while working from inside leaves that layer alone. If you're re-siding anyway, that's the ideal time, because the wrap can be checked and replaced if it needs it, and rigid foam board can go on the outside as well as or instead of filling the cavities.
What should I check before insulating the walls of an older house in Bakersfield?
Two things come first in an older house, lead paint and old wiring. Lead safety rules apply to homes built before 1980, depending on how much wall the work disturbs, so ask any crew how they'll follow them before work starts. Where a house has knob-and-tube wiring, the old kind run on porcelain knobs, the National Electrical Code doesn't allow insulation around it, so the wiring in each wall decides which walls can be filled.
How much does wall insulation cost in Bakersfield?
There's no fair number until I've seen your house, because the price turns on how many walls you fill, which side we work from and what an older house needs handled first. Working from inside usually keeps it down when the siding is sound, going in from outside adds the house wrap repair mentioned above, and doing the walls during a re-siding job saves that step. Your estimate puts a real number on your walls.
How do I choose a wall insulation contractor in Bakersfield?
Judge them on how carefully they install, because blown-in insulation has to fill each cavity completely and go in dense enough not to settle, or it sinks and leaves empty spots. California's C-2 insulation license class is the one that covers installing insulation for temperature or sound control, so it's worth asking about. We're licensed and fully insured.
Where do I apply for a building permit in Bakersfield?
You apply for and track a building permit with the City of Bakersfield on its Clariti Customer Portal. We work across the city and the cities around it in Kern County, so I first check whether your address falls under the city or the county, and if the job needs a permit, we handle the paperwork and the inspection. California's Energy Code also sets efficiency rules for changes to existing homes, not just new ones, so ask me at the estimate how it touches your walls.
Work that often goes with wall insulation
Air sealing services
Outside air leaking in around outlets and pipes can undo a lot of what new wall insulation does, so closing those gaps protects the money you put into the walls.
Basement insulation
A basement that's cold to stand in needs its own method for walls set in the ground, not the fill we blow into the walls upstairs.
Book a look at your walls
Have your house's age, the kind of wiring if you know it and any plans to re-side ready when you call (661) 377-0037 or send the form, because those three answers tell me what to look for first.



