Garage floors and building pads

Garage & Shed Slabs in Decatur, IL

Level, reinforced slabs for garages, sheds and workshops, poured to the builder's layout.

A free visit to measure, then a price on paper with every part of the job on its own line
Stone base compacted under every outdoor slab, air-entrained ready-mix and saw-cut joints
Permit and right-of-way questions answered for your address before a pour date is set

Slabs That Carry a Building

A garage or shed slab is not just flatwork; it is the floor and often the foundation for a building. We pour garage and shed slabs in Decatur and the surrounding towns: new slabs for detached garages and pole buildings, replacement floors in existing garages, shed pads, and small pads for air conditioners, generators and trash cans.

Old garages, tired floors

Decatur has a lot of detached garages behind older homes, and a median home age of 1960 according to Census figures summarized by Point2Homes. Many of those garage floors were poured directly on soil decades ago. The common problems are a floor that has cracked into large pieces, a low spot where water and road salt collect from parked cars, and a slab edge that has sunk away from the walls. In some cases the floor can be removed and replaced while the garage stays standing; we check the walls, sill plate and footing before recommending that.

What a good garage slab needs

Compacted stone so the slab is supported evenly and does not settle under vehicles
Thickness and steel sized to the load; HomeGuide notes two-car garage floors are typically 4 to 6 inches of reinforced concrete
Thickened edges or footings under the walls, per the building plan and local code
A slight fall toward the overhead door so snowmelt drains out
Control joints that keep cracks in straight lines
Anchor bolts set where the builder needs them for a new structure

Pads for sheds and outbuildings

Sheds set on blocks or bare dirt tend to lean and sink over time. A concrete pad gives the building a flat, dry footing and a floor you can roll a mower onto. HomeGuide says shed slabs typically run about 4 inches thick and often go without reinforcement. Because the ground here freezes and thaws so often, we usually add mesh anyway and always compact a stone base. The pad is poured slightly larger than the shed so roof runoff lands on concrete rather than soil along the walls.

Get a Free Estimate

Working with your builder

If a garage or pole building is going up, we work from the builder's layout for slab size, edge thickness, footing depth and anchor locations. If you are replacing a floor in an existing garage, we plan around the walls and door opening. New garages and many larger outbuildings need a building permit; we confirm what your city, village or Macon County requires for your address before scheduling the pour.

Vapor barriers and finishes

Heated garages and workshops benefit from a vapor barrier under the slab to keep ground moisture from coming up through the floor. Garage floors get a smooth steel-trowel or light broom finish, depending on whether you plan to coat the floor later. If an epoxy coating is in your plans, tell us before the pour so we can finish the surface to suit it.

After the pour

Keep vehicles off a new garage floor for about a week and heavy equipment off longer. Rinse road salt off the floor in winter when you can, and consider a penetrating sealer so salty slush does not soak into the surface.

Call (217) 301-2983 with the size of your garage or shed and we will set a time to measure.

Slab Work We Do

Slabs for buildings large and small, each with a base and thickness matched to the load.

Garage floor replacement

Removing a broken garage floor and pouring a new one inside the existing walls when the structure allows.

New garage and pole building slabs

Slabs with thickened edges and anchors placed to the builder's plan.

Shed pads

Level pads a little larger than the shed, on a compacted base.

Equipment and utility pads

Small pads for air conditioners, generators, trash cans and hot tubs.

Workshop floors

Slabs with vapor barrier and a finish suited to coatings or heavy tools.

Typical Slab Costs

Item	Published range
Concrete slab, per sq ft installed	$6 to $12
4-inch slab, per sq ft	$6 to $8
6-inch slab, per sq ft	$8 to $10
Two-car garage floor (400 to 576 sq ft)	$2,400 to $6,900
Shed slab (about 10' x 10' to 20' x 20')	$600 to $4,800
12' x 12' slab	$860 to $1,700
Removing an old slab, per sq ft	$3 to $8
Gravel base, per sq ft	$1 to $3

National ranges from HomeGuide's concrete slab cost guide. Footings, access, tear-out and building permit needs change the price. Your written estimate is the price.

How a Slab Gets Poured

1. Plan the slab

We confirm size, thickness, edges and anchors with you or your builder and check permit needs.

2. Excavate and base

Soil is dug out to depth and a crushed stone base is compacted level.

3. Form and reinforce

Forms, thickened edges, vapor barrier and reinforcement go in as planned.

4. Pour, finish and cure

The concrete is placed, finished, jointed and cured before any walls or vehicles go on it.

Why Choose Us for Garage & Shed Slabs

Built to the building plan

Edges, anchors and slab size match what your builder needs.

Honest on floor replacement

We check walls and footings first and tell you if a floor swap makes sense.

Garage & Shed Slabs Questions

How thick should a garage floor be?

According to HomeGuide, two-car garage floors are typically 4 to 6 inches of reinforced concrete. We size yours to the vehicles and gear it will hold.

Can a garage floor be replaced with the garage still standing?

Often, yes, if the walls sit on their own footing or sill that can stay put. We inspect first and explain the options.

Does a shed need a concrete pad?

It is not required, but a pad keeps a shed level and dry and gives mowers and tools a hard floor.

Will my new garage slab need a permit?

A new garage usually needs a building permit. We check what your city, village or the county requires for your address.

Get a Garage & Shed Slabs Estimate

Tell us the size of the garage, shed or pad and whether a building is going on it. We will measure and give you a written estimate.

Call (217) 301-2983 Free Estimate