Crawl space vapor barrier in Compton CA - a covered floor that still drains
Bare dirt or torn plastic under the house? We cover the ground so less moisture rises into your crawl space.
Do I need a vapor barrier in my crawl space?
A crawl space vapor barrier in Compton is a plastic ground cover laid over the dirt under your house, and when it's put in well, it helps hold back the ground moisture and soil gases, like radon, that rise into the space below your floors.
Most people hear about it from a plumber or a termite inspector who came out of the crawl space and said the dirt is bare or the old plastic is torn up. Bare dirt lets ground vapor rise into the space under your floors, and a worn cover that's stopped working does about the same, so repairing the one you have is a real option next to laying new. The price mostly turns on the size of the crawl space, whether we patch or replace, how much has to come out first and whether yours is vented or closed, because a closed one takes more sealing. The schedule turns on getting the space cleared and the crew in. At the estimate, I look at the space and go over what I found with you, so you're not guessing. If the floors above feel cold too, ask about crawl space insulation while we're there.
How we lay a crawl space vapor barrier
We start by looking at how water already moves under the house, where it runs, where it sits and where it leaves, because the cover has to go down so that pattern keeps working. If something's wet from above, like a dripping pipe, we point it out so it gets fixed before any plastic goes down, since a cover over a leak just hides it. Then our crew clears out debris so the plastic can reach the whole floor, patches the old cover or pulls it and lays new, and runs it out to the walls and around the posts and pipes. It gets the sealing your type of crawl space calls for, which we cover in the questions below.
A crawl space cover is ground work. If you need a moisture layer somewhere else in the house, like a wall that's open for a remodel, that's our vapor barrier installation work. Air moves up through a house and out the top, so closing things up at the bottom pairs well with attic air sealing, where we close the gaps around lights, pipes and the hatch before any insulation goes in.
Repairing the cover you have
This suits a cover that's mostly whole but torn, pulled back or short of the walls in spots. We patch and extend it instead of tearing out plastic that's still doing its job, and if yours can be saved, we'll say so.
New cover over bare dirt
This is for a crawl space with no cover at all, or one so brittle and torn that patching would leave gaps. We pull the old plastic and lay new across the whole floor, keeping the water paths working.
Putting in a crawl space vapor barrier in Compton
In Compton, the city takes permit applications in person only, with nothing paid or filed online, and whoever applies has to hold a current City of Compton business license. Whether a crawl space cover needs a permit at your house is a question for the city, so if your job needs one, I'll tell you at the estimate and we handle the paperwork with the city or county office for you.
A lot of the raised-floor houses we get under around here have had plumbers, cable installers and pest crews through the crawl space over the years, and the old plastic shows it, pulled back or torn wherever someone needed to reach a pipe. We see the same thing on jobs in Lynwood and Paramount, so we check the whole floor, edges and corners included, before deciding between a patch and a new cover. We're based in Compton and work the cities around it, plus the nearby unincorporated areas the county looks after, so call and ask if yours isn't listed.
What a covered crawl space looks like
Why call us for crawl space vapor barriers
I go under it myself
I come out to look at the crawl space and write the estimate myself, then our trained crew does the install and I check the work before we call it finished. The person who told you what the job needs is the one who signs off on it.
Insulating houses since 2013
I started this business in 2013, right here in Compton, after learning the trade on a crew that worked attics and crawl spaces. Crawl space work is where I learned, not something we tacked on later.
Licensed and fully insured crew
We're licensed and fully insured. That matters under a house, where the crew works around your pipes and wiring, and you shouldn't be on the hook if something goes wrong.
Down there the order matters most, with water paths and leaks first and the cover second. Call (562) 232-8636 or send a request with the rough size of your crawl space, whether it has vents and what shape any old cover is in, and I'll come take a look.
(562) 232-8636Get a free on-site estimate for your crawl space cover
We reply within one business day to set a time, and I come out to look at the crawl space myself. The estimate is free, with no pressure and no obligation, because I go over what I found with you before you decide anything.
Crawl space vapor barrier questions in Compton
What does a crawl space vapor barrier do?
It covers the dirt floor under your house with plastic so less ground moisture and fewer soil gases, like radon, rise into the crawl space. That only holds when it's laid well, across the whole floor and without blocking how water already drains.
Does my crawl space vapor barrier need its seams sealed?
Only if your crawl space is the closed kind, with no vents in the foundation walls letting outside air in. Federal guidance calls for sealing the seams and the openings where pipes or posts pass through only in unvented crawl spaces, so a vented one gets the cover without that step. Most people don't know which they have, and I'll tell you at the estimate.
How much does a crawl space vapor barrier cost in Compton?
A basic vapor barrier, just plastic over the dirt floor, usually runs about $0.50 to $1.50 per square foot across the US. That's the going rate nationally, not our price, and it doesn't include clearing the space, sealing a closed crawl space or fixing a leak first. Your own figure comes from the estimate, once I've seen the size of the space and what's down there.
Who is allowed to install a vapor barrier in California?
Under California's licensing rules, work that needs a permit of any kind has to be done by a licensed contractor, even when the job is under $1,000. That also applies when the person doing the work hires helpers. If a permit comes into your job, ask whoever you hire for their state license before work starts.
How do I get my crawl space ready for a vapor barrier?
Clear out what you've stored down there before the crew arrives, because the plastic has to cover the whole floor to do its job. We haul out loose debris as part of the work, but boxes, old lumber and tools are easier for you to sort first. If something's too heavy or awkward to move, mention it when you call.
What causes wood rot under a house?
Mold and bacteria growing on damp wood are a cause of wood rot, and that same growth can set off asthma and allergies in many people. A cover over the dirt helps by limiting the ground moisture rising into the space. If I see soft or stained framing at the estimate, I'll show you, because that gets looked at before the plastic goes down.
Have us look at your crawl space vapor barrier
We pick up at (562) 232-8636 weekdays 6 AM to 11 PM and weekends 8 AM to 9 PM, so call after work.
