Concrete patio construction in Saint Charles MO - a patio that drains and stays even
Cracked, sinking or puddling patio? We pour a new slab on a packed stone bed, sloped so rain runs away from your house.
- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
What does it take to build a concrete patio in Saint Charles?
At K&L Saint Charles Concrete, concrete patio construction in Saint Charles starts below the surface, with a dug-out, packed bed of crushed stone and a slab sloped to shed rain, so your patio drains and sits even through freezing winters.
Most people call us because the old patio has cracked, sunk toward the house or holds a puddle after every storm, or because the backyard is bare dirt and they want somewhere to put a table. The price mostly turns on the size, how much digging and stone your yard needs, whether an old slab has to come out, how thick the slab has to be and the finish you pick, and the schedule turns on the weather and what the city or county needs for your address. I'll go through all of that on site and send a written estimate with each part of the job listed separately, so you can see what the base costs next to the finish.
How our concrete patio construction works
A patio holds up best when it sits on a solid stone bed and sheds rain, so that's where the work starts. We dig out the grass and soft soil down to firm subgrade, the native ground the stone will sit on, instead of raking it level, then spread and pack crushed stone, which drains water out from under the slab and gives it an even bed. Next we set the forms with a slight fall away from your house, and before anything gets poured I'll show you where the water will go. For the concrete itself, the general rule where slabs freeze and thaw is an air-entrained mix, concrete with tiny air bubbles added on purpose so it handles freezing better, and you can ask any contractor for it by name. We also talk through the finish, because one maker's guide favors a broom or float finish outside, since steel troweling to a slick shine knocks down some of that air right at the surface. Then we cut the control joints, grooves that give the slab a planned place to crack, and let it cure, which is the wait while the concrete gains strength before you load it with furniture. If something has to give in your budget, I'd trim the finish before the base, because the base is buried on day one and it's the part I spent years repairing on other people's jobs.
Patios rarely stand alone. If you'd like the surface to look like stone or brick, our stamped concrete services press a pattern into the same slab over the same base. Most patios also need a way to get to them, and concrete sidewalk building can tie the new patio to the back door, the driveway or the gate so you have a dry path there.
Broom-finished backyard patio
This suits most households that want a spot for a grill and a table, because a broom finish, light ridges dragged across the wet surface, gives your feet some grip when it's wet or frosty. It's the plain, hard-wearing choice and usually the easiest on the budget.
Thicker slab for heavier loads
If the patio will hold a hot tub, an outdoor kitchen or the occasional vehicle, tell me at the estimate. Flatwork, the trade's word for slabs like patios, walks and driveways, is often poured thicker than a typical patio when it has to carry more weight.
Concrete patio construction in Saint Charles: permits and winters
The city's Building Division says new residential construction generally needs a permit, but its list names patio covers, not concrete patios, so the list alone doesn't settle whether your slab needs one. If your project adds a roof over the patio or a retaining wall over 4 feet high, those are on the city's list. Before we start, we check with the city or county office that covers your address, and when a permit is needed we handle the filing, keep you posted and let you know if another office has to sign off too. If you'd rather ask yourself, the city's Community Development Department at (636) 949-3222 can put you in touch with the building commissioner or an inspector.
What we see most on patio calls is winter wear, flaking or cracked tops after a few seasons and slabs that settled back toward the house. We're based in Saint Charles and work across St. Charles County and nearby St. Louis County, and we plan for the same freezing and thawing on jobs in St. Peters and Maryland Heights.
Why Saint Charles homeowners call K&L Saint Charles Concrete for patios
I come to every estimate
I walk your yard with you myself, ask how you'll use the patio and explain the options before I write anything, and our crew lead runs the work on site. That way the questions you ask on day one get answered by someone who knows how the job will be built.
Building concrete since 2013
Before I started the business, I spent years fixing cracked walks, sunken steps and broken driveways for a property management company. That's where I learned most failures start in the digging and the base, so that's the part we don't rush on your patio.
Licensed and insured for your job
K&L Saint Charles Concrete is licensed and insured. Ask about either when I'm out for the estimate, before you commit to anything.
Planned for Saint Charles winters
Winters here swing above and below freezing, so we plan the mix, the finish and the pour date around them. That's often the difference between a top that stays smooth and one that flakes after a few seasons.
The part of a patio that matters most is the part you won't see once it's poured. Call (636) 277-0973 or send us a message, and I'll come take a look.
Request a quoteGet a free, itemized estimate for your new patio
We respond within one business day to set up a time for me to come out. I'll walk the site with you, explain your options and then send a written estimate with each part of the job listed separately. It's free, done on site and comes with no pressure to book.
What happens after you call about a patio in Saint Charles?
Call or send a message
Call (636) 277-0973 or use the form, and we'll find a time for me to come see the yard. Tell us roughly where the patio will go so I know what to look at when I get there.
Walk the yard together
I look at the ground and the slope with you, ask how you'll use the patio and explain the options before I write anything up. Your written estimate lists each part of the job separately, so you can see where the money goes and decide what matters to you.
Permits checked, then the pour
Once you say yes, we check what your address needs from the city or county. Then our crew lead runs the digging, the base, the pour and the finish.
Final walk-through and care
When it's done, I walk the patio with you and go over how to care for it. That's the time to ask anything about joints, sealing or the first winter.
Frequently asked questions
How much does a concrete patio cost in Saint Charles, MO?
In the St. Louis area, a concrete patio usually costs about $4 to $11 per square foot, including materials and labor. Where yours lands depends on the size, the digging and stone the site needs, any old slab that has to come out and the finish, and our written estimate shows each of those as its own line.
Will my new concrete patio crack?
Some cracking is normal, because concrete can't be kept from cracking entirely, but well-designed joints control where it happens and keep it small. The joints give the slab a straight, planned line to crack along instead of a random one across the middle, so ask any contractor how they'll lay them out on your patio.
Can you pour a concrete patio in cold weather?
Yes, as long as the new concrete is protected. Cold weather for concrete means the air is below 40°F, or expected to drop there, while the fresh slab needs protecting, and concrete poured then still gets strong and durable when it's produced, placed and protected properly. If your pour date lands in that window, ask how the slab will be protected, and we'll go over our plan before we schedule.
Can I use salt on my new patio its first winter?
It's better not to. Concrete industry advice is to use sand or kitty litter for traction instead of deicing salt during the first year, especially on concrete placed after September.
How often should I seal a concrete patio?
Every 3 to 5 years is a common guideline for outdoor concrete. One concrete industry group advises cleaning the surface and reapplying a commercial penetrating sealer on that schedule, following the sealer maker's instructions.
What causes a concrete patio to sink or tilt toward the house?
Usually the ground underneath was raked level instead of dug out and packed, so the slab settles along with the dirt. A patio poured flat or tipped toward the house makes it worse, because rain runs back under the edge, which is why we check the slope before we pour.
Other concrete work that goes with a patio
Stamped concrete services
Stamped concrete gives your patio the look of stone, brick or slate without loose pavers, and it still starts on the packed base a plain slab needs.
Concrete sidewalk building
A new concrete walk connects the patio to your back door, driveway or gate, so guests aren't crossing soggy lawn, and it can be laid out to match the patio's slope.
St Charles, MO
Plan your new concrete patio with us
Have the rough size, how you'll use it and when you're hoping to have it ready when you call, and we can set up the visit around your timing.