Insulation contractor in King City, CA - attics and crawl spaces done in order
Soledad Spray Foam Insulation is an insulation contractor working in King City, CA. We seal and insulate attics, walls and crawl spaces in King City homes, and we check what's under the old insulation before anything new goes in.

- Fully licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
Insulation work in King City
King City is a drive south down 101 from our base in Soledad, past Greenfield, and it's the same valley work we do as far north as Prunedale. Calls here come from homeowners, landlords with rentals and some business owners, and they usually start with a drafty house, cold floors or a room over the garage that runs hot.
A lot of the older houses we open up have only a few inches of insulation in the attic, packed down over the years, and a raised floor with little or nothing under it. What moves the price is the size of the space, whether old material has to come out first and which material fits the house. What moves the schedule is mostly that cleanup and any permit, and the estimate I write lays out what I found and what I'd do first. On these houses the order matters more than the material, because gaps and old problems left in place undo the new insulation.
- Problems found before insulation goes in
- Gaps sealed so drafts stop
- Eave vents left open to breathe
- Even depth out to the edges
What we do in King City homes
Every service below is something we do in King City, and on the visit I'll tell you which one your house needs first.
Spray foam insulation
Where ductwork runs through the attic or the room over the garage won't hold temperature, spray foam insulation seals and insulates at once, though it costs more.
Explore Spray foam insulationAttic insulation
Plenty of King City attics hold a few inches of old fill packed thin. Attic insulation starts with a check for leaks and droppings, then we bring it up evenly, edges included.
Explore Attic insulationBlown-in insulation
Blown-in insulation, loose fill blown through a hose, is how we usually top up an attic once the gaps are sealed and the eave vents are kept clear.
Explore Blown-in insulationHome insulation
For a drafty older house with a high power bill, home insulation means we look at the attic, walls and crawl space together and tell you which to do first.
Explore Home insulationInsulation removal
When old attic insulation is soaked, matted or full of droppings, insulation removal comes first. Laying new material over it just hides the problem.
Explore Insulation removalCrawl space insulation
King City houses on raised floors often come with cold floors. With crawl space insulation we fill between the joists under the floor and hold it tight so it doesn't sag.
Explore Crawl space insulationWall insulation
Walls in older houses around King City are often empty. Wall insulation can go into closed walls through small holes we patch, or into open walls during a remodel.
Explore Wall insulationAir sealing services
Most drafty houses we see need air sealing first, closing gaps around pipes, wires and the hatch so new insulation isn't fighting a draft.
Explore Air sealing servicesBasement insulation
Where a house has a basement or a dug-down room, basement insulation goes on the walls as foam that stands up to moisture, so the space stops feeling clammy.
Explore Basement insulationClosed-cell foam insulation
Closed-cell foam, a dense foam that blocks moisture, fits crawl spaces and the farm shops and metal buildings around King City where damp air would soak looser material.
Explore Closed-cell foam insulationOpen-cell foam insulation
Open-cell foam is softer and cheaper than closed-cell. We use it in walls and rooflines, like a room over the garage, where moisture isn't the main worry.
Explore Open-cell foam insulationCommercial insulation
For shops, offices and farm buildings in King City, commercial insulation starts with a look at the metal walls and roof deck, so we insulate where heat and cold actually get in.
Explore Commercial insulationCrawl space vapor barrier
A crawl space vapor barrier is a plastic sheet over the bare dirt under a raised-floor house that keeps ground moisture out of the floor insulation, so we overlap and tape every seam.
Explore Crawl space vapor barrierVapor barrier installation
In a remodel, walls sometimes need vapor barrier installation. We check which side it goes on first, because the wrong side traps moisture in the wall.
Explore Vapor barrier installationAttic air sealing
Can lights, plumbing holes and the hatch leak house air into the attic. Attic air sealing closes them before insulation goes down, so the rooms below stop feeling drafty.
Explore Attic air sealingRetrofit insulation
Retrofit insulation adds insulation to a lived-in older house through the attic, the crawl space or small holes in the walls, without tearing out finished rooms.
Explore Retrofit insulation
Get your free King City estimate
Tell us what you're noticing, like a hot upstairs or cold floors. We reply within one business day to set up a free visit, with no obligation.
What King City houses ask of insulation
Most of what we find in King City houses comes from their age and how they were built, with thin attics, cold raised floors and problems hiding under old insulation.
Thin, packed-down attics
Older attics often hold a few inches that settled years ago. We check it for leaks and droppings before we top it up or pull it out.
Cold raised floors
Raised floors over bare dirt let cold and damp come up into the rooms. We lay a vapor barrier on the ground first, then insulate the floor above.
Old wiring and roof leaks
Before anything new goes down, I look for roof leaks and old wiring. That's outside our trade, so I'll tell you and it gets fixed first.
Your city not listed? Call us
We do the same attic, wall and crawl space work in the other cities below, so pick yours for its own page. If your city isn't listed, call (831) 315-4005 anyway, because we work in other cities around these too.
From your call to a finished job
I keep the estimate simple so you know what you're paying for and why. I look at the space myself and write down what I found and what I'd do first.
Call or send the form
Call (831) 315-4005 or use the form and tell us what you're noticing, and we'll set up a time for me to come out.
I look at the space
I come out to your King City house and go through the attic, walls or crawl space myself, checking for leaks, wiring and pests first.
Your written estimate
Your written estimate lists anything that needs fixing first. If you go ahead and a permit is needed, we line it up with the city's building department.
The work and walkthrough
The crew works within the hours on the city's permit form, which rule out 7 pm to 7 am, Sundays and holidays. I walk the finished job with you.
King City insulation questions
Do I need a permit for insulation work in King City, CA?
The city requires a building permit, with few exceptions, whenever a structure is altered, repaired or improved, and its list of exempt work names cosmetic jobs like painting and new flooring, not insulation. So we check your job with the King City building department before we start. When a permit is needed, we handle the paperwork as part of the job.
Does an insulation contractor need a business license to work in King City?
Yes, King City requires anyone doing business in the city, contractors included, to hold a city business license before they start. Licenses run for the calendar year, though contractors can take them by the quarter, and it's fair to ask any contractor about it before work begins.
How much does insulation cost for a house in King City?
Your price comes down to the size of the space, what's already up there and the material, so I give you your number in a written estimate after I see the house. Pulling out old, soaked or dirty insulation adds cost, and spray foam costs more than sealing the gaps and topping up with blown-in fill. I'd usually go with sealing and loose fill, unless your ductwork runs through the attic, where foam earns its price.
How big a down payment can a contractor ask for in California?
The Contractors State License Board limits a down payment to $1,000 or 10 percent of the total contract price, whichever is less. Any other payments have to be listed in the contract and tied to work done or materials delivered, and the board says this applies to all home improvement projects, so it covers an insulation job too.
How do I check flood risk before insulating a crawl space in King City?
You can look up your address on FEMA's flood hazard map, which shows a home's level of flood risk and the type of flooding it faces. Tell me what it shows when I come out, because insulation that gets soaked under a floor usually has to come out, and that changes which material makes sense down there.
How long does insulation take, and when can we go back inside?
With blown-in fill you can usually stay home, but with spray foam everyone, kids and pets included, steps out until the re-entry time, the wait the foam maker sets before you come back in. How long we're there turns on the size of the space, whether old insulation comes out first and which material we use, and I'll go over that with you before the work starts.
Get a King City insulation estimate
We answer seven days a week, into the late evening, so call (831) 315-4005 or send the form tonight.




