Slab foundation building in Sheridan WY - built for the soil your lot actually has
Planning a house or addition on Sheridan ground that swells and freezes? We start with the soil and pour a slab planned to hold.
- Licensed and insured.
- Free quotes on site.
- We respond within 1 business day.
What goes into a slab foundation for a new home in Sheridan?
A slab foundation is a concrete slab poured on the ground that carries your home. At Sheridan Concrete we build them in Sheridan, WY starting with what the soil underneath will do, so the slab holds up as that ground moves.
Most people who call me about a slab are building a house, an addition or a shop, and they want the part underneath done right the first time. The price turns mostly on the size and shape of the building, what the soil study finds, which slab type that leads to, and how much dirt has to come out or go in before the base is solid. The schedule turns on getting the soil study done, your builder's timeline and the weather. If your plans call for a basement or crawlspace instead, that's foundation installation, and either way you get your own figure in a written estimate after I've walked the lot.
How we handle slab foundation building
For a slab under a home, we start with a soil study for the lot, because the slab type should come from what's actually in the ground and not from habit. Once that's in, we choose the slab to suit it and plan the timing so the house can be closed in before freezing weather. On site we dig out to the subgrade, the firm soil the slab sits on, and pack a base over it in layers, since a base that's only raked flat settles along with the dirt. We set forms, place the rebar, the steel grid that keeps small cracks from spreading, or the cables for a post-tensioned slab, then pour early in the day so heat doesn't leave a weak, dusty top. After that the slab cures, which is the wait while the concrete gains strength before anyone builds on it. If the budget gets tight, the base is the last place I'll cut, because you can live with a rough finish and you can't fix a base once a house is sitting on it.
Some projects need more than a slab. If the house sits better on walls and footings over a crawlspace or basement, that's our foundation installation work, and if you're putting up a shop or a commercial building that needs paved parking around it, we handle concrete parking lot building too, so the grades between the slab and the lot get planned together.
Rebar-reinforced slab
This suits lots where the soil study comes back with stable ground and the builder wants a straightforward slab. A steel grid inside the concrete and thicker edges under the walls carry the house.
Post-tensioned slab
This suits lots where the study finds clay that moves with the seasons. Steel cables run through the slab and get tightened once the concrete sets, so anyone drilling or cutting into it later has to locate those cables first and work around them the right way.
Frost-protected shallow slab
This suits slab homes on fairly level lots or gentle slopes where deep footings would add cost. Insulation placed around the building keeps the ground under the edges warmer, so the footing doesn't have to go as deep.
Slab foundation building on Sheridan's clay
About 26% of the soil in Sheridan County is high shrink-swell clay, the kind that swells when it's wet and shrinks when it dries, compared with 12% across Wyoming and 17% nationally. Wyoming's geological survey says buildings set on that clay without proper steps to deal with it can crack, collapse or fail, and it strongly recommends a detailed soil study for the specific site, wherever you're building. That's why we don't settle on a slab design until the study is in. If you want a first look, the state's online hazards map gives a broad regional picture, but it's general and doesn't stand in for testing your lot.
On jobs here the trouble usually starts at the edge of the slab, where roof water and spring melt soak the clay and make it swell. We set the grade so water runs away from the house before we pour, and we see the same ground on jobs across Sheridan and the cities around it.
Why Sheridan homeowners and builders call us for slab foundations
I'm on every job myself
I come out to look at every lot before you get a number, and I'm on site with our crew when the slab is formed, poured and finished. You deal with the person who made the decisions, not someone reading them off a sheet.
Soil first, slab type second
With as much clay as Sheridan County has, I won't pick a slab type until the soil study for your lot is in. If the ground calls for an engineer, I'd rather tell you to wait and bring one in than pour something I don't trust.
Started this business in 2023
I spent every summer through school on concrete crews around Sheridan, starting on a shovel and working up to finishing, and started Sheridan Concrete in 2023 for the problem solving. That's why we take the jobs with a catch, like a slab on tricky ground.
Licensed and insured, paperwork in hand
Sheridan Concrete is licensed and insured. Ask for the paperwork at the estimate and I'll bring it, so you can check it before you sign anything.
If you've got a lot and a set of plans, send them through our contact page or call (307) 218-3106, and we'll set a time for me to come look.
Request a quoteGet a written estimate for your slab foundation
We reply to every call and form within one business day. Then I come out, look at the lot, ask about the building you're planning and walk you through the slab choices before you get a written estimate. The estimate is free and done on site, with no pressure to book.
What happens after you call about a slab foundation?
Call or send the form
Call (307) 218-3106 or use the form, and tell us the address and the building you're planning. If you already have a soil study for the lot, mention it, because it shapes everything after.
Walk the lot with me
I come out, look at the site, ask how the building will be used and go over the slab choices with you. Then you get a written estimate that lays out the slab type, the work and the price, so you know the number before anything starts.
Prep, form, pour and finish
Once you say go, we prep the ground, set forms, pour and finish, with me on site. The slab cures before framing starts, and we work that wait into your builder's schedule.
Walk the finished slab together
We walk the finished job with you and go over care for the first season. Most of that is keeping water moving away from the edges until the landscaping and gutters are in.
Frequently asked questions
How much does a slab foundation cost in Sheridan, WY?
There's no honest number until I've seen the lot and the soil study, because what's under the slab moves the price as much as the slab itself. The biggest drivers are the size and shape of the building, how much dirt has to come out or come in for a solid base, and whether the soil calls for extra steel, tensioned cables or edge insulation. You get a written figure after I walk the site.
What is the best slab type for clay soil in Sheridan?
A post-tensioned slab is a common answer on shrink-swell clay, and the Post-Tensioning Institute, the trade group for the method, calls it a cost-efficient choice for home foundations on that kind of ground. Tightening the cables squeezes the concrete, and that squeeze resists the strain when the clay swells and shrinks, so it holds up better on clay than a slab built without it. We still let the soil study for your lot make the final call.
How do I time a slab foundation around winter in Sheridan?
Plan the concrete early enough that the house can be closed in and heated before freezing weather, which is what a national builder's guide calls for and what conventional practice does. A frost-protected slab can go in with one pour of concrete, which speeds up construction. If you're aiming to be framed by fall, call us early in the year.
Should I test a new home in Wyoming for radon?
Yes, Wyoming's geological survey recommends site-specific radon testing for all homes and reports homes with elevated radon in every county of the state. The Wyoming Department of Health offers free and discounted at-home test kits to Wyoming residents. EPA also says building radon-resistant features in typically costs the builder less than fixing a home after it's built, so it's worth deciding before the pour.
Do I need a vapor barrier under a concrete slab foundation?
For the floor inside your house, yes, one industry guidance sheet calls it sensible planning to put a vapor retarder, a layer laid under the concrete, beneath every interior floor slab. The same guidance says they generally aren't needed under outdoor slabs like patios. Under a house it keeps ground moisture from working up into your flooring.
What causes a slab foundation to crack on clay ground?
Usually it's the clay swelling when it gets wet and shrinking when it dries out, pushing and dropping the slab unevenly. Water running toward the house and a base that wasn't dug out and packed make it worse. That's why we start with the soil study and plan the drainage before the forms go in.
Other foundation and site work we do
Foundation installation
If your lot slopes hard or you want a basement or crawlspace under the house, you'll need walls on footings instead of a slab, and we build those too.
Concrete parking lot building
Building a shop, office or rental property on a slab usually means paved parking and drives around it, and planning both together keeps water running away from the building.
Sheridan, WY
Plan your slab before the ground freezes
Send the address, the building you're planning and any soil study for the lot, and I'll know what to look for before I walk it.