Crawl space insulation in Hollister CA - warmer floors, problems fixed first
Cold floors over the crawl space? We find what's wrong down there first, then insulate so your floors stay warmer.

I check the install myself
Our crew does the install, and I go back under the house to check the work before we call it done. I'm looking for a missed gap or anything unsafe buried under the insulation, because that's the part you can't see once we leave.
In business since 2017, finding gaps first
I worked summers on an insulation crew all through school, then kept at it on other people's crews before starting this business. We're known for the unglamorous part, finding the gaps and problems before any insulation goes in.
Fully licensed and insured in California
California's licensing board treats installing insulation, for heat or for sound, as its own contractor trade. We're fully licensed and insured. Call (831) 245-4007 or use the form and I'll come take a look.
Insulating the crawl space under your Hollister house
Crawl space insulation goes either under the floor above the crawl space or on the crawl space walls once the vents are sealed. It helps if your floors run cold, a room over the crawl space feels drafty, or you want a quieter house.
Most crawl space insulation calls in Hollister start with cold floors or a room that never warms up, and the fix depends on what's down there. The price mostly turns on the size of the crawl space, whether we insulate under the floor or seal it and do the walls, and what has to be fixed first, like water coming in or pest damage. A low, cramped crawl space is slower going, and that shows in the price too.
The schedule turns on the same things, since leaks or pest damage get repaired before insulation goes in, and on whether your job needs a permit. Permit rules depend on where your house sits, so I check with the city or county building office for each address, and we handle the permit when the job calls for one. In the county, San Benito County's Building Division reviews plans and issues building permits. Your estimate tells you what your job needs and why.
Crawl space insulation and the sealing around it
Under the floor or sealed walls
The first decision is where the insulation goes, under the floor or on the crawl space walls with the vents sealed, and it mostly comes down to where your ducts and furnace sit and whether water's getting in. If your heating and cooling gear lives down there, sealing the crawl space gives it a milder place to run, so it tends to last longer and run more efficiently. If not, insulating under the floor is usually the simpler job. And if water's getting in, that gets sorted before we pick either.
Sealing gaps before the floor insulation
When insulation goes under the floor, we seal the gaps first, because pipes, wires and ducts that run up through the floor leave holes that pull cold air into the house. That's the same work as our air sealing services, done from below. A trade group's install guide says wire supports should hold floor insulation in full contact with the underside of the floor without squeezing it, so ask any crew how they'll hold it up. If a room above still feels drafty after that, wall insulation is usually the next place to look.
Sealing a crawl space in Hollister
Sealing the crawl space means closing off the vents, insulating the walls and covering the dirt with a vapor barrier sealed to those walls, which helps keep humid outside air and ground moisture out. California's energy rules require that ground cover in any sealed crawl space, so a sealed crawl space in Hollister gets one. Laid well, it also helps hold back soil gases like radon. Permitted work here follows state building rules along with local ones. We're based in Hollister and do the same work in Gilroy, Salinas and the other cities around it.
Get your crawl space checked and priced
We reply within one business day to set a time for me to come out. The estimate is free, done on site and comes with no obligation.
(831) 245-4007How a crawl space job goes with us
You call, I come look
Call (831) 245-4007 or send the form, and we'll get back to you. I come out and look at the crawl space myself, so tell us about any leaks, pest damage, or a furnace, water heater or ducts down there.
A written estimate and permits
You get a written estimate that lists what needs fixing first, like water coming in or pest damage, and what we'd do about the insulation. If the job needs a permit, we sort it out with the right office before we start.
Install, check and walk-through
Our crew does the work, then I check it and we walk through it with you, so you see what went in and where. Once it's in, the insulation itself needs no upkeep.
Crawl space insulation questions from Hollister
Do pipes and ducts need their own insulation in a sealed crawl space?
Usually not, if the crawl space is sealed and its outer walls are insulated. One insulation maker's guide gives that as the general rule for a sealed crawl space, because the pipes and ducts end up inside the insulated space. Insulation under the floor is different, since the pipes and ducts below it stay in the cold.
What gets fixed before crawl space insulation goes in?
Water coming in, moisture and pest damage get found and dealt with first, so new insulation isn't covering an old problem. Good practice is to check the crawl space and give you a list of problems before work starts, and one insulation maker says walls that leak water must be repaired before insulating. Plan those repairs into the job.
Does a gas water heater in my crawl space change the job?
Yes. If a natural draft water heater or furnace, one that vents by rising hot air instead of a fan, sits in the crawl space, a combustion safety test should follow the work. It checks that exhaust isn't backing up or spilling, so tell us about it when you call.
How much does crawl space insulation cost in Hollister?
Across the US, crawl space insulation usually runs about $3 to $6 per square foot, and that's the going range, not our price. Where yours lands depends on the size of the crawl space, which method we use and what needs repair first, and your written estimate spells it out. Satisfaction guaranteed on every job.
