Crawl space insulation in San Luis AZ - a sealed crawl space that stays dry
Cold floors or a high power bill? We seal and insulate your crawl space so the rooms above feel right and the space stays dry.
- Services
- 16
- Service areas
- 3
Book a look at your crawl space
Call (928) 550-6036 and I'll crawl the space myself and tell you straight what it needs.
Request an estimateIs it worth insulating the crawl space under your house?
Crawl space insulation in San Luis means air sealing and insulating the space under your house, either along its walls or in the floor above it. When it's done along the walls, the crawl space becomes part of the area your heating and cooling system serves, so any ducts or equipment down there work in a milder space.
Most people call me about cold floors, a room that never feels right or a power bill that keeps climbing, and the crawl space is usually the part of the house nobody has looked at in years. The price comes down to the size of the space, whether we insulate the walls or the floor, which material it takes and whether old insulation has to come out first through insulation removal. The schedule turns on what we find down there, because water or pest damage gets fixed before anything goes in, and on whether the city wants a permit and inspection. I go over all of that on your estimate after I've seen the space.
How we handle crawl space insulation
Closing up a vented crawl space takes more than shutting the vents, so we start by checking for water coming in, damp spots and pest damage, and anything that needs fixing gets fixed before insulation goes in. I look at the walls before the floor. If the walls are the right line for your house, we plan how the space will stay dry and what happens with any fuel-burning equipment down there before anyone touches a vent, then our crew seals the gaps around pipes, wires and the access hatch, insulates the walls and lays and seals a ground cover. Closed-cell foam, a dense foam that also blocks moisture, costs more but seals and insulates in one pass, and I'll pick it when your ductwork lives under the house. Without ducts down there, careful sealing and a less costly material usually wins. If the floor turns out to be the better line, we air seal and insulate the floor above instead.
Crawl space work often points to the rest of the house. If the rooms above still run hot or cold afterward, wall insulation is usually the next place to look, and drafts that get in elsewhere are what our air sealing services are for. I'll tell you straight if one of those matters more for your house than the crawl space does.
What crawl space insulation in San Luis needs from the city
In San Luis, the city's Building Safety division inspects construction, and inspections are booked by calling 928-341-8564. What the city wants for crawl space work isn't something I'll guess at, so before we start, we check with that office, and if a permit is needed, we pull it and set up the inspections. If you have questions about the city's rules, I'll point you to the right office.
Crawl spaces we open up around here vary a lot. Some have ducts and a water heater down there, some have old batts sagging off the floor, and some barely have room to crawl, so the plan follows what's actually under your house. We see the same mix on jobs in Somerton and Yuma, and we handle them the same way.
Why call us for crawl space work
The owner writes your estimate
I come out myself and write the estimate, a crew lead runs the install with the crew, and I check the work at the end. You hear what your house needs from the same person who signs off on the finished job.
Licensed and insured, worth asking
We're licensed and insured. Arizona limits what an unlicensed worker can take on, which the questions below cover, so it's worth asking any crew before they go under your floor.
Started in San Luis in 2021
I worked insulation crews young, spent years in other work, then came back and started this business in San Luis in 2021. Coming back made me strict about doing every step in the right order, and that matters most under a house.
No padding on the quote
I'd rather talk you out of work you don't need than sell it to you, so if the floor is enough, that's what the estimate says. The work is backed by our satisfaction guarantee.
- Phone
- (928) 550-6036
- Hours
- Mon–Sun: 7 AM–10 PM
- Location
- San Luis, AZ 85349
Under a house, the safety checks come before anything gets sealed up. Send us the rough size of your crawl space and a note on anything down there that burns gas, or call (928) 550-6036.
Get a free on-site estimate for your crawl space
Tell us the rough size of your crawl space and whether a furnace or water heater sits down there that burns gas. We reply within one business day to set a time, then I come out, look at the space in person and go over what it needs before I write up your estimate. No pressure, no obligation.
- Phone
- (928) 550-6036
- Location
- San Luis, AZ 85349
- Hours
- Mon–Sun: 7 AM–10 PM
- Credentials
- Licensed and insured.
Frequently asked questions
How do I decide whether to insulate the crawl space walls or the floor?
For most houses the walls are the better choice, because federal energy guidance calls air sealing and insulating along the crawl space walls a best practice in every climate, with the floor above serving as the line only in some homes. Floors over an open, unconditioned crawl space can lose heat and feel cold, so I look at the walls first and only go to the floor when the space can't be sealed and kept dry.
Can I just close my crawl space vents to save energy?
No, because sealing the vents and doing nothing else can raise the moisture down there, according to federal guidance on closing up vented crawl spaces. If a furnace or water heater in the crawl space burns fuel and depends on natural air flow, shutting the vents alone can turn deadly, so that equipment gets dealt with before a vent is closed.
How much does crawl space insulation cost in San Luis?
Across the US, insulating a crawl space of about 1,000 square feet usually costs about $2,200 to $4,700 per job, before sales tax, fees and dump charges. That's a national figure, not our price, and yours depends on the size of your space and what it needs once I've been down there.
Can a handyman insulate a crawl space in Arizona?
Only on a small job, because Arizona law lets someone without a contractor license take casual or minor work under $1,000, counting labor and materials, and that exemption ends once the job needs a local building permit. You can do the work on your own home yourself, as long as the house is for you and not for sale or rent.
Does spray foam in a crawl space have to be covered?
Usually yes, because some foam insulation can give off toxic or flammable gases when it heats up, and federal guidance notes that most codes call for a covering such as gypsum board over it. Some foam products are made and tested to cut those risks, so I check the foam we plan to use with the city's building office before it goes in.
What is the best way to keep a sealed crawl space dry?
A sealed crawl space always needs a way to dry out, and federal guidance names a small flow of conditioned air from your heating and cooling system as one of the most effective. A vapor barrier over the ground, sealed to the walls, also helps keep out humid outside air and moisture coming up from the soil.
Other work that often goes with it
Wall insulation
If a room stays hot or cold after the crawl space is done, the walls around it may be thin or empty, and that's worth a look.
Air sealing services
Drafts usually come through small gaps around pipes, wires, outlets and the attic hatch, and closing those first lets every inch of insulation in the house do its job.