Concrete floor installation in Saint Charles MO - a slab planned around your flooring
Old floor cracked, or a room down to dirt? We pour a new floor planned for the tile, wood or carpet you've picked.
- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
What goes into a new concrete floor in Saint Charles?
Concrete floor installation in Saint Charles means pouring a new concrete slab for a basement, addition, shop or commercial room. It can stay bare or take carpet, tile or wood once it has dried enough. The pour is the quick part. The drying before your flooring goes down is what takes time.
Most calls I get start with a floor that's sinking or chipping, or a new room that needs one, and the owner usually already knows what's going on top. The price moves with the size of the floor, how much digging and base work the ground needs, whether old concrete has to come out first and how easy it is to get concrete into the room. The schedule turns on the weather and on how long the slab has to dry before flooring can go down. You'll get the figure for your own floor in a written estimate after I've seen the site. If your floor is in a garage, our garage floor concrete page covers that work.
How we handle concrete floor installation
I start by asking what will cover the floor and how the room will be used, because a slab under wood or tile gets prepared differently from one under a workbench. Then we dig out to firm ground and check the subgrade, the soil the slab sits on, since soft spots there are what make a floor sink later. We bring in base stone and pack it down instead of raking it level, lay a moisture barrier when the floor will be covered, and set rebar, the steel inside the slab that keeps it from pulling apart. After the pour we trowel the top smooth and cut control joints, shallow cuts that give the slab a planned place to crack instead of a random one. Then it cures, the early days when concrete gains its strength and shouldn't dry out too fast, and I give you an honest drying time so your flooring plans can work around it. If something has to give in the budget, I'd rather you save on the finish than on the base, because the base is buried on day one and it decides whether your floor stays flat.
A new floor often isn't the only concrete on the project. An addition or a basement walkout usually needs concrete steps at the door, and when the room is a pool house or opens onto the yard, we can pour the concrete pool deck outside on the same schedule.
Smooth floor under carpet, tile or wood
This suits finished basements, additions and offices, where the concrete ends up hidden under flooring. We trowel it flat for the covering and plan the work under the slab around what you've picked.
Bare floor for a shop or storage room
This suits workshops, storage rooms and utility spaces where the concrete is the floor you walk on. There's no flooring waiting on it to dry, so the focus is a hard, even surface with joints in sensible places.
Concrete floor installation rules and ground in Saint Charles
Saint Charles generally requires permits for new construction of homes and commercial buildings, but the city's lists don't name concrete floors, so whether yours needs one isn't settled until someone checks. Before we start, we check with the city or county office that covers your address. If a permit is needed, we handle the filing, keep you posted and tell you if another office has to sign off too. If you'd like to ask yourself, the city's Building Division is the place to call. The city also sets the minimum vapor barrier, the plastic sheet under a slab that slows moisture coming up, at 6 mil. A national concrete trade group recommends at least 10 mils, for less moisture getting through and a sheet that holds up during and after the pour. That matters most under a floor that will be covered.
The city rates weathering here as severe, and even an indoor floor gets poured through those winters, which is why we talk about cold-weather timing before we book. For some soils in St. Charles County, enough reinforcement in a floor can reduce damage from ground that shrinks and swells, so we look at the ground at your address and reinforce to suit it. We meet the same mix of ground on jobs in St. Peters and O'Fallon.
Why Saint Charles property owners call K&L Saint Charles Concrete for new floors
I come to every estimate
I look at every job in person, and our crew lead runs the work once we start. Your answers come from the person who planned the floor, and the crew lead on site knows what was promised.
Started in 2013 after years of repairs
Before I started K&L Saint Charles Concrete 13 years ago, I spent years fixing cracked walks, sunken steps and broken slabs for a property management company. I saw where failures start, and that's why the digging and base under your floor get my attention.
Licensed and insured
K&L Saint Charles Concrete is licensed and insured. That counts on a floor job, where our crew is working inside your house or building.
Based right here in Saint Charles
We're based in Saint Charles and work in cities across St. Charles County and nearby St. Louis County. If you don't see your city on our site, call and ask.
Our work is backed by our satisfaction guarantee. If you're planning a new floor, send us the details and I'll come take a look.
Request a quoteGet a free on-site estimate for your new concrete floor
We respond within one business day to set up a visit, and there's no pressure to book. I'll come out, look at the room with you and ask how you'll use it, then send you a written estimate.
What happens after you call about a concrete floor in Saint Charles?
Call or send a message
Call (636) 277-0973 or use the form, and we'll get back to you to set up a visit at the site.
I walk the room with you
I look at the site with you, ask how the floor will be used and explain your options before I write anything up. Your written estimate lists each part of the job separately, so you can see what you're paying for before you decide.
We pour and walk it together
Once you say yes, we check what your address needs from the city or county, and our crew lead runs the job from the base to the finish. At the end I walk the floor with you and go over how to care for it.
Frequently asked questions
How much does a concrete floor cost around St. Louis?
Concrete slab installation in the St. Louis area usually costs about $4 to $7.50 per square foot, which is the going rate across the market and not a quote from us. Where your floor lands depends mostly on how much base work the ground needs, whether old concrete comes out and how easy the room is to reach. I'll give you a written figure for your floor after I've seen the site.
How long does it take before I can put flooring on a new concrete slab?
A new slab can take weeks to months to dry enough for flooring makers, even in good indoor conditions, according to national trade guidance. The same guidance advises curing a new slab under plastic sheeting or waterproof paper for 3 to 7 days to keep its moisture in, which helps the concrete but adds to the drying time. Build that wait into your schedule before you order flooring.
Will my new concrete floor crack?
Cracks in concrete can't be prevented entirely, but properly designed joints control them and keep them to a minimum, according to national trade guidance. Ask any contractor, us included, how the joints will be laid out before work begins. I'll show you where ours go on your floor and why.
What is the best way to keep moisture out of a concrete floor under tile or wood?
A floor that will be covered with carpet, tile, wood or similar flooring needs protection from moisture moving up from beneath the slab, according to national trade guidance, and so does one that will hold moisture-sensitive equipment or products. That's why I ask how the room will be used before we plan the work under the slab. The vapor barrier covered in the Saint Charles section above is where that protection starts.
How long does a concrete floor take to cure in cold weather?
It takes longer, because in cold weather low early strength and fast drying raise the risk of early cracking, so new concrete needs protection from moisture loss for a longer stretch, according to guidance from Iowa State University. A winter job can take longer to reach a finished floor as a result. We'll talk through timing for your floor when I'm out.
Do I need a permit for a new concrete floor in Saint Charles?
It isn't settled for a floor on its own, because the city's permit lists don't name concrete floors. We check with the office that covers your address before we start and handle the filing if one is needed, as explained above.
Other concrete work that goes with a new floor
Concrete steps construction
Steps at a basement walkout, an addition or a shop entry take a beating, and building them along with the floor lets heights and landings line up with the new slab.
Concrete pool decks
If your new floor is in a pool house or a room facing the pool, a concrete deck outside can be planned with it, giving you an even surface around the water.
St Charles, MO
Plan your new concrete floor with us
Call (636) 277-0973 any day of the week or use the form, and have the floor's size in square feet, the room it's in and the flooring you plan to put on top ready so I can plan the visit.