Crawl space vapor barrier in Gardena CA - the dirt floor covered, wall to wall
Musty smell coming up from the bare dirt under your floor? We cover that ground in plastic so less moisture rises into the crawl space.
What does a crawl space vapor barrier do?
A crawl space vapor barrier is a plastic sheet laid over the dirt floor under your house, and in Gardena homes with a crawl space, a well-installed one helps keep ground moisture and soil gases like radon from rising into the space under your floors.
At Professional Gardena Insulation Company, we're based in Gardena and work in many cities around it, and most calls about this start with a musty smell, bare dirt, or old plastic that's torn and bunched up in a corner. What moves the price is how big the floor is, how much has to be cleared out first, whether standing water needs fixing before the plastic goes down, and whether you want a basic liner or the bigger job of closing the vents. The schedule turns on the same things, plus any water repair that belongs to another trade and a permit if your job needs one, and my written estimate puts all of that in order for your house. If the floors above are cold too, we can look at crawl space insulation on the same visit.
What our crawl space vapor barrier work includes
A vapor barrier job starts the way a kitchen shift does, with prep. I go down first to see what's there, then our crew clears out stored things and debris so nothing keeps the plastic off the ground. Standing water gets dealt with before anything else goes in, and then we lay plastic over as much of the dirt as we can reach, into the corners and around the piers, instead of a sheet in the middle with bare edges. If you want the vents closed, we treat it as a bigger job and look at the whole space, including any gas equipment down there, because a liner alone doesn't make a closed crawl space safe.
Moisture isn't only a crawl space problem, so if you're seeing it in walls or other parts of the house, our vapor barrier installation work covers those spots. Warm air leaking out the top of a house also pulls air up from below, and attic air sealing closes the gaps around lights, pipes and the hatch that let it happen.
Crawl space vapor barrier permits and rules in Gardena
Gardena requires a building permit for most home construction work, and its list of exceptions names things like decks, tile, painting and sheds but not vapor barriers, so the rules don't settle whether your job needs one. The city's building services office is the place to ask, and checking is part of our prep. We find out whether your address falls under the city or the County, and when a permit is needed, we handle the paperwork, set up the inspections and keep you posted. The city is plain that work done without a required permit is illegal, can cause trouble when you sell, and may leave your fire and homeowner's insurance not covering that work. State law also lets you ask any contractor to list the subcontractors on a home improvement contract, with each one's name, contact information, license number and classification, while the main contractor stays responsible for the job, so ask us that before you sign.
Most of the crawl spaces I look at around Gardena sit under older houses, and I usually find bare dirt, old plastic that's torn or shoved to one side, and sometimes a furnace or water heater down there, which changes the plan if you want the vents closed. We see the same mix on jobs in Torrance and Carson.
How a vapor barrier job goes
Call us or send the form
Call (424) 292-2987 or send the form, and we'll set up a time for me to come out. A rough idea of the crawl space size helps me plan the visit.
I look underneath with you
I go into the crawl space, take photos and show you what I found, then explain the order I'd do the work in. You'll see every part of the price before you agree to anything.
Read your written estimate
The written estimate spells out which job you're getting, a basic liner or a closed crawl space, along with any clearing or water work that has to come first. That makes it easy to compare line for line with anyone else's quote.
Our crew lays the plastic
My lead installer runs the crew, from clearing the space to the last seam. When the work is done, they walk you through the finished crawl space so you can see the coverage yourself.
Get a written estimate for your crawl space
Send the form and we'll reply within one business day to set up a visit. I'll come out, look at your crawl space with you and leave you with a free written estimate, and there's no obligation to go ahead.
Questions before you book a vapor barrier
How do I know if my crawl space needs a vapor barrier?
If you see bare dirt down there, or old plastic that's torn, bunched up or only covering part of the floor, it's worth having someone look. A musty smell in the house can point the same way, though I'd want to see the space before telling you what's causing it.
Does a crawl space vapor barrier in Gardena need a permit?
It might, because the city requires permits for most home construction work and vapor barriers aren't on its list of exceptions either way. We check with the office that covers your address before we start, and if a permit is needed, we take care of it.
What happens before the plastic goes down in a crawl space?
Any standing water comes out first, and its source has to be found and repaired so it can't come back and raise the moisture again. That repair is sometimes work for another trade, like a plumber for a leaking pipe, and it adds to the plan, so I'll tell you at the estimate if I see it.
Can I just close my crawl space vents?
Not by itself, because sealing only the vents can raise moisture in the crawl space, and if a furnace or water heater down there relies on a natural draft to carry its exhaust out, it can create a deadly situation. Closing a crawl space is a bigger job that looks at the whole space, and the guidance calls for heavier plastic there, either 10-mil, ten thousandths of an inch thick, or a cross-laminated 6-mil sheet that resists punctures.
How much does a crawl space vapor barrier cost?
A basic vapor barrier, just plastic over the dirt floor, usually costs about $0.50 to $1.50 per square foot across the US. That range doesn't cover water repairs or closing the vents, which make it a bigger job, and your written estimate gives the figure for your own house.
What is the best way to compare crawl space vapor barrier quotes?
Ask whether each quote covers the whole ground, because the plastic should cover all of it, or as close to all of it as is reasonably possible. Then check the thickness, at least 6-mil for a basic job, and if the crawl space is being closed, whether the seams and any openings in the plastic get sealed with a sealant made to work with it.
Why Gardena homeowners call Professional Gardena Insulation Company for vapor barriers
The owner prices your job
I started this business in 2013 after learning the trade one attic and crawl space at a time, and I come out to look at the job and give the estimate myself. You get someone who knows what to look for under there and who'll tell you plainly when something is a call for another trade.
We're licensed and insured
We're licensed and insured. That counts in Gardena, because only properly licensed people, or those state contractor law specifically exempts, can take out a permit, so it's worth checking before you hire anyone.
Satisfaction guaranteed on every job
That promise is why the prep comes first with us, the way a cook preps before the first ticket comes in. Plastic laid over standing water or a pile of old junk isn't a finished job, so we don't lay it that way.
On this job, what matters most is what's under the plastic, so the water and the clearing come first and the coverage goes as far as we can reach. Call (424) 292-2987 or request your estimate and I'll come take a look.
Other work that pairs with a vapor barrier
Vapor barrier installation
For damp showing up in walls or other parts of the house beyond the crawl space floor.
Attic air sealing
Plugs the leaks up top that keep drawing air from under the house into your rooms.
Book a look at your crawl space
Have the rough size of the crawl space handy, and tell us whether you've seen standing water or have a furnace or water heater down there, so I come out ready for the right job.
