Crawl space vapor barrier in Cerritos CA - the dirt covered from wall to wall
Musty smell or damp air coming up through the floor? We cover the crawl space dirt edge to edge, up the walls and around every pier.
Does my crawl space in Cerritos need a vapor barrier?
A crawl space vapor barrier is heavy plastic laid over the bare dirt under a raised-floor house, and in Cerritos we put one in to cut down the ground damp that rises into the crawl space and the floor above it.
Most people call about a musty smell, cold floors, or old plastic down there that's torn, bunched up against one wall or missing in spots. Before I quote anything, I crawl in and look, because what I find under the house decides the order of the work.
The price moves with how much dirt and wall the plastic has to cover, how many piers it wraps, how much stored stuff and debris has to come out, and whether the old cover gets patched or pulled. The schedule mostly turns on how soon the space is cleared and what the city wants before we start, and your written estimate lists each step in the order we'd do it.
- Plastic over every bit of dirt in the crawl space, not just the easy-to-reach middle.
- Older plastic down there patched where it's still sound, or pulled out and replaced.
- Stored boxes and loose debris cleared out first, so the cover reaches every corner.
What happens after you call about a crawl space barrier?
I do the looking and write the estimate myself, and our installers do the work. Here's how it goes from your first call to the walk-through at the end.
Call or send a message
You call (562) 307-9067 or send the form, and we get back to you to set a time for my visit. Pick a time when someone can show me where the crawl space access is, whether that's a hatch in a closet or an opening outside.
I crawl in and measure
I go through the crawl space, measure the floor, count the piers and photograph the old cover and any damp spots. You get a written estimate that lists each step in order, so the numbers match the house you actually have.
Our crew lays the barrier
Once your stored things are out, our installers protect the path to the access and do the work. Cerritos allows construction Monday through Friday from 7 a.m. to 6 p.m. and Saturday from 10 a.m. to 5 p.m., with no work on Sundays or city holidays unless the city OKs it in writing, so we schedule inside those hours.
We go over it together
I check the finished crawl space and walk you through it, with photos of the walls, piers and seams if you'd rather not crawl in yourself. We don't call it done until you've seen it.
Crawl space, vapor barrier and insulation work up close
These photos show the kind of crawl space and attic work the insulation trade does. They aren't from one particular house, but they give you a sense of what a covered crawl space floor and walls look like.
Loose-fill insulation covers an attic floor beneath dark wooden rafters, beside a roll of yellow fiberglass batts.
Pink batt insulation fills the spaces between vertical wooden wall studs.
Pink blown-in insulation covers an attic floor beneath exposed wooden trusses and beside flexible ducts.
An unfinished room has spray foam on one wall and ceiling, with fiberglass batts between studs on the far wall.
Pale green spray foam coats the underside of a roof between exposed wooden rafters.
An unfinished room has white spray foam insulation filling the wall and ceiling framing around a window.
Get a written crawl space vapor barrier estimate
Send the form or call (562) 307-9067, and we'll reply within one business day to set a free visit, with no obligation. Tell us what's stored down there and any water you've seen, and I'll check both on the visit.
(562) 307-9067Questions Cerritos homeowners ask about crawl space vapor barriers
These are the questions I hear most about the plastic under a house in Cerritos, from radon and water to what the city wants first. If yours isn't here, call and ask.
Does a crawl space vapor barrier help with radon?
A well-installed one helps, since federal guidance written for the whole country says a crawl space ground cover helps to minimize soil gases such as radon along with ground moisture vapor. Gas comes up wherever dirt is left bare, which is one more reason we cover all of it. "Helps to minimize" is the guidance's wording, and it's as far as I'd go.
How much does a crawl space vapor barrier cost in Cerritos?
I can't give you an honest number until I've been under your house, because the cost follows the size of your crawl space and what's going on down there. Patching a sound older cover usually costs less than replacing it, and any water problem that has to be fixed first adds to the job. Your free written estimate breaks it out step by step, so you can see where the money goes.
What causes water in a crawl space, and will a vapor barrier stop it?
Standing or running water usually gets in because it isn't being sent away from the house or because it's finding holes to come through, and a vapor barrier won't stop it, since the plastic is made for the damp that rises off the soil. The fix for water is directing it away from the house and sealing the spots it gets in. If I see water coming in, we plan that work alongside the barrier so you're not covering up the problem.
How do I know if my crawl space is vented or unvented?
Look at the outside of your foundation, because a vented crawl space has screened openings to outside air and an unvented one is closed off from it. It changes the job, since federal guidance calls for sealing the seams and the spots where pipes and posts pass through the cover with a durable sealant only in unvented crawl spaces. I'll confirm which kind you have on my visit, and it's fair to ask any installer you're comparing how their plan fits yours.
Does the City of Cerritos need to approve a crawl space vapor barrier?
The city says permits are generally required for home improvement projects, so plan on the question being asked before work starts. For projects its home improvement page doesn't list, Cerritos asks residents to call the Department of Community Development at (562) 916-1201 for the requirements. That's the same check we make before we set your start date.
Can an unlicensed handyman install a crawl space vapor barrier in California?
Only on a small job, because California's contractor licensing board sets the minor work exemption at $1,000, and it applies only when the work needs no permit and the person employs no one on it. A job that needs a permit or a crew falls outside that. We're fully licensed and insured, so that question doesn't come up with us.
Crawl space vapor barrier work in Cerritos and nearby cities
Cerritos wants its Planning Division's approval before home improvement work starts, so we check with the city before setting a date and handle any permit the job needs. We do the same in Norwalk, Bellflower and the cities around them.