Concrete garage floor replacement in Pittsburgh, PA
Older Pittsburgh garages often have thin floors poured on whatever was there. After decades of road salt, wet tires and frost, they crack, flake and sink. We break out the old floor, fix the base and pour a new one.
Job ticket: Garage Floors
- Thickness
- 4 to 5 in
- Mix
- 4,000 PSI air-entrained
- Slope
- Toward the door
- Time
- 2 to 4 days
Rough guide$9 to $15 per sq ft
When a garage floor needs replacing
Small cracks are normal, and many floors can be saved. Replacing makes sense when the floor has lost its base or its surface is coming apart.
- Sections have sunk or tilted, and water runs toward the walls
- The surface is flaking from years of road salt
- Cracks are wider than a quarter inch or have a lip
- The floor rocks when you drive on it
- The floor is too thin or has no base
- You want a new surface for epoxy, but the slab is too far gone
How we replace a garage floor
First we saw-cut around the edges so the walls and any block curb stay intact. Then the old floor is broken up and hauled away, usually with a small skid steer. Tight garages off Pittsburgh alleys sometimes need breaking and carrying by hand. We check the ground, add and compact stone and set mesh or rebar. The new floor gets a slight slope toward the door and a clean edge at the apron.
If your garage sits under a house or has walls bearing on the slab, we check what is holding them up before anything is cut. Some older garages have walls on thickened floor edges, and those need extra care.
Tuck-under and alley garages
Many Pittsburgh homes have a tuck-under garage beneath the living space, reached by a steep drive. Those jobs mean low ceilings, a tight turn and no room for a truck to back in. We usually pump the concrete or run it in with a buggy. Dust control matters here too, since the house is right above. We seal off the door to the basement and use saws with water.
Fix the floor or coat it?
If the slab is level and sound, you may not need a new one. Concrete leveling can lift a sunken section. Resurfacing can renew a worn top. An epoxy garage floor covers stains and stands up to salt. If you plan to do any of these on a new floor, wait about 28 days before coating it.
Garage floor costs
Replacement usually runs $9 to $15 per square foot with removal. A typical one-car floor runs about $2,500 to $4,500 and a two-car floor about $4,500 to $8,500. For a full breakdown, see the garage floor cost guide.
How the work goes
- Look at the floor
We find out why it failed and whether it can be saved.
- Saw and break out
Edges are cut, then the old floor is broken up and hauled off.
- Rebuild the base
We compact the ground and add stone, then set the steel.
- Pour and cure
New floor poured with a slope to the door. Park on it after about 7 days.
Common questions
How to fix spalling concrete garage floor?
Chip or grind away everything loose, then put a thin bonded resurfacing or polymer repair mortar over the sound slab and seal it. NRMCA traces most of this flaking to road salt and freeze-thaw on concrete with too little entrained air or a weak top layer, so hosing salt off the floor in winter helps the repair last.
How much does it cost to replace a 2 car garage floor?
About $4,500 to $8,500, depending on size, access and how thick the old floor is.
How much does it cost to pour a garage floor?
In a new garage with no removal, about $7 to $11 per square foot.
Does a garage floor need to slope?
Yes. As of 2026, Pennsylvania uses the 2021 residential code, which says the parking area of a garage floor must slope toward a drain or toward the main vehicle door, so spills and meltwater run out. Confirm current rules with your municipality before work starts.
How thick should a garage floor be?
Usually 4 to 5 inches on a compacted stone base, and thicker for a car lift or heavy truck.
How thick should a garage floor be for a lift?
Most two-post lifts call for at least 4 to 6 inches of 3,000 PSI or stronger concrete. Check the lift maker's requirements, since they vary.
Should I seal my concrete garage floor?
Yes. Road salt and melting snow are hard on bare concrete. A penetrating sealer helps, or use a coating for more protection.
More concrete services
- concrete slabs in Pittsburgh
- concrete basement floors
- concrete flatwork
- exposed aggregate concrete
- concrete footers
- shed slabs and hot tub pads
- concrete leveling in Pittsburgh
- concrete resurfacing in Pittsburgh
- concrete sealing
- epoxy garage floors
- concrete removal