Rooms that feel drafty or cold against the outside walls? We fill closed walls from inside or out so the whole room stays even.
Wall insulation in Rohnert Park usually means filling the hollow spaces inside your finished walls with blown-in insulation, loose fill we blow through a hose into small holes near the top of each wall cavity, so the room holds heat better and lets in less outside noise.
Most people call me about walls because one room never feels right. It's cold along the outside wall, there's a draft near the outlets, or you hear every car go by. In a lot of older houses there's nothing in those walls at all, or just an old blanket of insulation that slumped years ago. Drill and fill is the common fix because it gets insulation in without tearing out drywall.
The price moves with how many walls we're filling, whether we work from inside or outside, how much siding or patching that takes, and whether anything needs repair first. The schedule turns mostly on what I find, since damage gets fixed before we fill, and on whether new siding is coming. At the estimate I show you photos of what I found and what I'd do first.
Every wall job comes down to a few choices about access and how tight the fill goes in. Here's how I'd walk you through them before we settle on a plan for your house.
Going in from outside means cutting through the drainage plane, the layer of house wrap behind your siding that sheds water, so it then needs patching or full replacement. Going in from inside leaves that layer alone. Which side wins comes down to how easy each side is to reach and what shape that wrap is already in.
Packing the fill tighter, called dense-pack, raises its R-value, which is how well insulation slows heat, and it settles less and stops more air moving through the wall. The catch is that the wall has to be well sealed and solid enough to take that pressure, so it's only the right call when your walls are in good shape.
From inside, the small holes get plugged and patched, and you'll want to touch up the paint. From outside, small pieces of siding may come off, and patched holes can still show unless new siding or trim goes over them, which is a big reason to tie outside work to a re-side.
Here's how a wall job goes from the first call to the final walkthrough, so you know who you'll see at each step and what you'll get from the visit.
Call (707) 576-6028 or use the form, and tell us which rooms bother you and roughly when the house was built. We get back to you to set up a time that works for you.
I come out myself, check the walls for moisture and damage, go up into the attic and take photos. Then we sit down together and I show you what I found and what I'd do first.
If the job needs a permit, Rohnert Park reviews applications in the order they come in, so expect some wait before we start. On the day, our crew protects your floors, handles the prep and fills the walls.
Before we pack up, I walk through the finished walls with you, show you where we drilled and how each spot was patched, and answer anything that's still on your mind.
Closed walls get checked for moisture and damage before we drill a single hole. If there are signs of water in the siding, the sheathing, which is the boards behind it, the framing around doors and windows or the inside finish, those repairs come first, because fresh insulation packed against a wet wall just hides the problem and holds it in.
I'll also ask when the house was built and whether new siding is in your plans, since both shape whether we work from inside or outside. Then I look past the walls. Filled walls slow the air moving through them, but gaps around the attic hatch, pipes and can lights leak on their own, and that's what our air sealing services take care of.
Cold floors are a different story. If the chill comes up from below, filling the walls won't fix it, and I'll tell you that straight and point you toward basement insulation or the floor over your crawl space instead, so your money goes where the cold is actually getting in.
If you're already pulling off drywall for a big remodel, the framing is wide open and there's no drilling at all. That opens up the same options as new construction, blown fiber or spray foam right into the open cavities, and it's a good moment to talk through foam, which costs more but seals air while it insulates.
If your siding is in decent shape and you're not re-siding soon, filling from inside leaves the house wrap alone and gets you a more comfortable room now. You'll have small patched holes to paint over.
If new siding is coming, that's the ideal time to fill from outside, because the wall is open and the house wrap can be checked and put back or replaced right then. Book the insulation alongside the siding job.
We reply within one business day to set up a time that suits you. I come out, check your walls and attic, take photos and walk you through what I'd do first. The estimate is free and there's no obligation.
(707) 576-6028Whether wall insulation needs a permit in Rohnert Park isn't settled by the city's own list. The Rohnert Park Building Division takes applications online, and the work it names is things like solar, water heaters, signs, mechanical, electrical and plumbing, not wall insulation. So before work starts we check with that office, and if a permit is needed we apply, keep you posted and set up the inspections.
The city books inspections through its online request portal, and building staff answer at 707-588-2240 if you'd like to ask them yourself. Around here, a lot of wall calls come from houses with finished walls nobody wants to open, so filling from inside comes up often. We're based in Rohnert Park and do the same work across Sonoma and Marin counties, including Cotati, Petaluma and plenty of cities nearby.
I come out for every estimate myself, because walls are where a quick look misses things. I started as a helper hauling bags and crawling through attics, and the lead I worked under taught me to look at the whole house before selling anybody anything. I opened this business in Rohnert Park in 2021, and that's still how I quote every job.
Our crew does the work, with me on site or one of our lead installers running the day. We're licensed and insured. California's licensing board has a class just for insulation work, installing material for temperature or sound control, so it's fair to ask anyone you're weighing how they're licensed. We back every wall we fill with three words, satisfaction guaranteed.
If a room in your house never feels right, call (707) 576-6028 or send us a message and tell us roughly when the house was built. I'll come out, check the walls and give you a straight answer on whether filling them is worth it.
Filled walls only do their part when the leaks around the attic hatch, plumbing and wiring holes are closed too, so the house stops pulling in outside air.
When floors stay cold underfoot no matter how snug the walls get, the space below is usually where the heat is slipping out of the house.
We're based in Rohnert Park and insulate walls across the cities around it in Sonoma and Marin counties, including the ones below and plenty of others nearby.
Blown-in insulation in San Francisco usually costs about $3 to $9 per square foot, which gives you a rough market range, not our price. Your walls land wherever the access, the number of walls and any repairs put them, and I'll give you your own figure at the estimate.
The city's permit list doesn't settle it, because it doesn't name wall insulation, so we check with the building division before we start. If one's needed, we handle the application and the inspections, as I explained above.
Usually yes with blown-in fill, because there's no curing time like there is with foam. The room we're working in gets noisy and a bit dusty, so keep kids and pets out of it until the crew cleans up. If foam goes into open walls during a remodel, the foam maker sets the re-entry time, the wait before you can come back in.
Pull furniture a few feet away from the outside walls we're filling and take down pictures and shelves on those walls. We cover the floors ourselves. If we're working from outside, clear plants and anything stored along the house so the crew can reach the siding.
Usually the attic, because heat rises and it's often the easier place to start. I still look at both at the estimate, since a house with a well-done attic and cold rooms along the outside walls is exactly where filling the walls pays off.
Call (707) 576-6028 or use the form with the year your house was built handy, so I know what to look for before I come out.
