Wall insulation in Redding CA - every cavity filled and the holes patched clean
If a room won't stay comfortable and the outside walls feel cold to the touch, we fill the empty cavities tight and patch the holes.

Can you insulate walls that are already finished?
Yes. Wall insulation in Redding for a finished house is usually drill and fill. We make small holes near the top of each outside wall cavity and blow insulation in, so the room holds its temperature without tearing out drywall. A&M Redding Insulation Services is based in Redding and works in the cities around it.
Most wall calls start with one room that won't behave, or an older house where nobody's sure what's inside the walls. The price moves with how much wall there is, which side we fill from and what has to happen before the blown-in insulation goes in, like fixing moisture damage or working around old wiring. Those same repairs set the schedule, because I won't fill a wall until it's ready. When I come out, I'll walk you through the order the work should go in, and you'll get a written estimate with your own figure.
How we do wall insulation on a finished house
I start by finding out what's already in the wall, because worn-out batts slumped in a cavity can keep new fill from reaching every corner. If the siding, the sheathing behind it, the window and door framing or the inside of the wall shows moisture damage, that gets fixed first. So do cracks in the plaster or drywall, since tightly packed insulation pushes on weak spots and can make them worse. Then our installers drill small holes into each cavity, from inside or outside depending on the siding and what's behind it. They pack the fill dense so it resists settling and leaving empty pockets, and they patch every hole before they leave.
Walls are only part of how a house loses heat. Air slips through gaps where pipes and wires pass through, so I often pair a wall job with air sealing services that close those gaps first. Walls below ground are a different job with different materials, and that's where basement insulation comes in.
Wall insulation in Redding and what California expects
California's energy code sets a standard for above-ground 2x4 wood-framed walls. A wall meets it with at least R-15 between framing spaced 16 inches apart, and R-value is how well insulation slows heat. That's the state's line for those walls, and how it applies to a house that's already built is something I look at job by job.
A lot of the houses we see in Redding are older, and older walls can hide two things I look for before anyone picks up a drill. The National Electrical Code doesn't allow insulation on or around knob-and-tube wiring, the early style strung on porcelain knobs, so walls that still have it need their own plan before we fill anything. Homes built before 1980 may also fall under lead safety rules when the work disturbs walls inside or out, which is why the year your house was built matters from the first visit. We run into the same mix of older homes on jobs in Anderson and Red Bluff.
How wall insulation works
Call or send the form
Call (530) 232-9176 or send the form and tell us which rooms are giving you trouble. We'll set a time for me to come out.
I look at your walls
I come out myself, look through the walls, attic or crawl space with you, note what I find and explain the order the work should go in. Your written estimate breaks out each piece, so you can see what's driving the price before you decide.
Set a date and fill
When you're ready, we pick a date that works for you. Our installers take care of any repairs first, then drill, fill and patch.
Walk the job together
Before we call it done, I go through the patches and the fill with you. You'll see what was done in each wall before we pack up.

Get a written estimate for your walls
We reply to every call and form within one business day. The estimate is free and done at your house, with no pressure and no obligation. After you send this, we'll set a time for me to look at your walls with you and explain what I'd do first, and then you get the estimate in writing.
Questions before you insulate your walls
Will insulating my walls mean big holes in them?
No, drill and fill uses small holes near the top of each wall cavity, so your walls stay up. On an inside job the holes are usually closed with drywall or foam plugs and joint compound, then sanded smooth and painted.
Should wall insulation go in from the inside or the outside of my house?
Inside is usually the gentler choice, because filling from outside cuts through the drainage plane, the water barrier behind your siding, and it then has to be patched or replaced. Filling from inside leaves that barrier alone, so the decision comes down to which side is easier to reach and what shape the barrier is in.
Is spray foam worth the extra cost for existing walls?
For most finished walls, no. Spray foam is typically the most expensive way to add insulation to an existing wall, and although it seals air as it insulates, sealing the gaps and filling the cavities with blown-in usually gets you most of the way for less.
How much does wall insulation cost in Redding?
Installing blown-in wall insulation across the US usually costs about $3.90 to $4.60 per square foot, and that's a national figure, not our price. Your own number depends on how much wall there is, which side we fill from and what needs fixing first, and you'll get it in writing after I've seen the house.
How long does blown-in wall insulation last?
Cellulose, one of the common blown-in materials, can keep working well for decades when it's properly installed. What usually cuts that short is fill that went in loose and settled, which is why we pack every cavity dense.
What is the best way to insulate walls during a remodel?
Insulate while the walls are open. In a gut rehab, where the inside wall finishes come off, the open framing can be insulated directly with no drilling, so if you're already planning that kind of work on a room or the whole house, that's the time to do it.
Why Redding homeowners call A&M Redding Insulation Services for wall insulation
The owner writes your estimate
I come out myself to look at the walls and write the estimate, and our installers do the work. I check it with you before we call it done, so the person who planned the job is the one who signs off on it.
In business since 2020
I learned the trade on an insulation crew and started this business in Redding in 2020, after months spent working out why two rooms in my own house wouldn't hold their temperature. Older homes that don't behave are the jobs I like most, because the obvious answer often isn't the real one.
Licensed and fully insured in California
California's contractors board sets a license classification just for insulation work, covering any material installed to control heat or sound. We're licensed and fully insured, so ask about it when I'm out.
Repairs and sealing come first
I'd rather tell you a wall isn't ready to fill yet than sell you insulation that won't help. Our work is backed by our satisfaction guarantee.
With walls, what's hidden behind the drywall decides the job, so the first step is a careful look. Set up a visit and I'll come see your house.
Other work that goes with wall insulation
Air sealing services
If you feel a draft at outlets or along the baseboards, closing those leaks keeps your new wall fill from fighting moving air.
Basement insulation
Walls with soil on the other side need a different approach than the walls upstairs, and this is the page for them.
Book a free estimate for your walls
Have the year your house was built and any signs of moisture or old wiring ready when you call (530) 232-9176 or send the form, so I know what to look for first.





