Wall insulation in Murrieta CA - closed walls filled tight from top to bottom
Rooms that feel hot against the outside wall all summer? We pack your closed walls full so the house holds a steadier temperature.
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Can you insulate walls without tearing them open?
Yes. For wall insulation in Murrieta homes with empty wall cavities, we use drill and fill, which means drilling small holes, blowing insulation into each cavity until it's packed full and then sealing the holes. Packed that tight, the fill takes up the whole cavity and slows the air moving through the wall, and your drywall stays where it is.
Most people call because one bedroom won't cool down in the afternoon or the power bill keeps climbing even after the attic insulation is done. The price turns on how many square feet of wall we're filling, which material you pick, and how many built-ins or odd cavities need their own holes. The schedule mostly turns on whether the job needs a permit from the city. I'll give you your own number on a written estimate once I've looked at the walls.
How can you tell your walls need insulation?
Outside walls feel warm
On a hot afternoon, put your hand flat on the inside of a wall that faces the sun, and if it feels warm, the cavity behind it is likely empty or the old fill has slumped. Every summer you wait, the air conditioner runs longer to make up for that wall.
One room never matches
The room with the most outside wall stays hotter or colder than the rest of the house no matter where you set the thermostat. That usually means empty cavities in those walls, and until they're filled you're closing vents and moving fans around to fight it.
Drafts at outlets and switches
If you feel air moving around the outlet covers on an outside wall, air is coming through an empty cavity and into the room. Left alone it keeps carrying dust and outside heat in, and filling the wall is what slows it down.
How our wall insulation work goes
Before anyone picks up a drill, I ask about built-in shelves or cabinets, because they break a wall into closed-off pockets that each need their own entry hole, and about any wall cavity your heating or air conditioning uses as a duct, because those have to stay empty. Then we drill each cavity, blow the fill in and pack it tight so it stays put, since loose fill can settle and leave the top of the wall bare, which is why national building guidance favors dense packing for closed walls in existing homes. If a hole shows wet or damaged material inside, I'd rather stop and tell you than pack new fill over a problem. Once each cavity is full, we seal the holes.
Filled walls still leak air where they meet the attic and around pipes and wiring, so we often pair this job with air sealing. If your house has walls below ground, they sit against soil and act differently from the framed walls upstairs, and basement insulation is how we handle those.
Drill and fill for finished walls
This suits a house where the drywall is up, the paint is fine and you don't want a remodel just to get insulation in. We work through small holes, so the walls stay standing and the cavities end up packed full.
Batts for open walls
This suits a remodel where the studs are already bare. National building guidance calls batts a very cost-effective choice when the cavities are a uniform size that matches the batt's width and depth, and when they aren't, I'd rather use something that fills the odd spaces.
Find out what your walls need, with a written estimate
Send us a few details and we'll get back to you within one business day to set up a free look at the house. I come out myself, check the walls and walk you through a written estimate, and there's no obligation to go ahead.
(951) 319-3238Wall insulation permits and jobs in Murrieta
Murrieta's Building and Safety Division handles plan review and inspections in the city, and its permits for single-family alterations include an insulation inspection after framing. That clearly covers walls opened up in a remodel, but it doesn't settle on its own whether drill and fill in finished walls needs a permit, so we check with the city before we start and you're not left guessing. When a job does need one, we take care of the application and line up the inspections. The city wants the project to have an address and parcel number before plans go in, and plans are submitted online, so that paperwork is on us.
We're based in Murrieta and work across the cities around it. Most wall calls we get come from houses where the attic is already done and the rooms with the most wall facing the afternoon sun still run hot, and we see the same thing on jobs in Temecula and Menifee.
What happens after you call about wall insulation in Murrieta?
Call or send us a note
Call (951) 319-3238 or use the form, and we'll set a time for me to come out. If you know about built-ins or a wall used as a duct, mention it so I can plan for it.
I look at the walls myself
I check the walls, the attic above them and any crawl space, then walk you through what has to be fixed first and what I'd suggest. You get a written estimate that shows what each part of the job is for, so the number makes sense before you decide.
We fill and seal the walls
I'm on the job with our crew, drilling, packing and sealing one wall at a time. If the job has a permit, the city's insulation inspection fits into this step.
Check the work together
We check the walls against the plan before we pack up. Then you look it over with me before we leave.
Frequently asked questions
How much does blown-in wall insulation cost in Murrieta?
Across the US, installing blown-in wall insulation usually costs about $3.80 to $4.60 per square foot of wall. That's a national figure for the market, not our price, and your total depends on how much wall we're filling, the material and how many built-ins need extra holes. I'll give you your own number on a written estimate after I've seen the house.
How do I choose between cellulose and fiberglass for my walls?
Pick based on how worried you are about water, because cellulose breaks down if it gets soaked and fiberglass isn't permanently damaged by it. Fiberglass is also lighter. If you've had a leak, I'd want it fixed before either one goes in, and then we can talk through which fits your walls.
Who can install insulation in Murrieta?
A licensed California contractor can, and the state has a license class for insulation work that covers installing insulation for heat or sound control. You can also do it yourself, but then the city has you sign the permit application as owner/builder and fill out a certification.
When is the best time to insulate my walls?
If you're planning new siding, that's the best time to add a continuous layer of insulation over the outside of the walls, according to national energy guidance, so it makes sense to plan both as one project. If siding isn't on your list, we can still fill the closed cavities from small holes without waiting.
How long does it take to insulate existing walls?
The time on site comes down to how many walls we're filling and how many built-ins or odd cavities need their own holes, so I give you the schedule with the estimate instead of guessing on the phone. If the job needs a permit, the city's review and inspection add to the calendar.
Do I have to leave the house while you insulate the walls?
Usually not for blown-in cellulose or fiberglass, because there's nothing curing in the walls and we work one area at a time. Spray foam is different, with a re-entry time, meaning the wait before you can come back inside, set by the foam maker, and I'll tell you up front if your job has one.
Murrieta, CA
Get a look at your walls
Call, use the form or email office@insulationmurrieta.com with your address, a rough wall area, any built-ins and any re-siding plans, so I can come out ready.