Spec notes · 2026-10-14

Coating the garage floor of a house you just bought, before the moving truck

You have the keys. The previous owner’s shelving is gone, the moving truck is booked for a date a few weeks out, and the garage is a bare concrete box with a light switch. In most houses around Cape Girardeau and Jackson that floor will never be this empty again. Once the boxes land and the second car pulls in, coating it means a weekend of hauling everything out to the driveway and back.

Is the gap between closing and moving in the best time to coat a garage floor?

For most buyers, yes. Nothing has to be moved, no car gets parked on the street for the week, and the installer can see the whole slab instead of the strips between storage. A job of garage floor epoxy in Cape Girardeau normally starts by clearing the floor, and in a house nobody has moved into yet that step is already done.

The honest exception is a short gap. If closing and the truck are close enough together that the measure, the prep day, the coat day and the cure window written on the estimate do not all fit between them, the floor waits for a weekend the garage can be emptied.

Houses change hands on both sides of I-55, and the garages differ by side. A newer Jackson subdivision house usually comes with an attached two- or three-car garage on a sound slab. An older house in Cape is more likely to have a single or detached garage with decades of patches in the concrete. Size moves the price on the first kind and repairs move it on the second. The cost page lists what a two-car garage floor costs here for each system.

What does an empty garage show that the showing did not?

The slab the previous owner lived on. During a showing the floor is under a car, a chest freezer, a workbench and a few rugs, and buyers look at the door and the ceiling. With all of that gone, every mark on the concrete says something about prep.

• A dark oval where the old car parked for years. Oil soaks into bare concrete rather than sitting on it, so the spot gets degreased and ground until clean concrete shows, or the coating will not bond there.
• Rust rings and anchor holes along a wall where steel shelving stood. The rings usually grind off. The holes get filled during crack and spall repair so they do not telegraph through the finished floor.
• Paint or a kit coating letting go in the two tire lanes while it still looks fine under where the workbench was. That is a failed bond and it has to come off before anything new goes down. Whether any of it can stay is the question in the article on repairing, recoating or removing an old epoxy floor.
• A rough patch in a corner, often smoother or darker than the slab around it. Old patches get sounded and either kept or cut out.
• Pitting and scaling in the first few feet inside the overhead door, where winters of road salt off Kingshighway and I-55 dripped off the car. That area is filled and leveled before the primer.

None of these rules out a coating. Each one gets looked at and priced at the measure, and on an older Cape slab the list usually runs longer.

Which home inspection notes about a garage floor matter for a coating?

Most of what a report says about a garage slab is ordinary coating prep. Hairline cracks, surface scaling at the door and a chalky white powder on the concrete all get handled before the primer. A crack that has opened wide, one side higher than the other, or a slab that has dropped away from the wall is different. That is a question about the concrete before anyone coats it.

Inspectors write these lines in a few common shapes. “Typical shrinkage cracking” describes the thin cracks nearly every garage slab grows as it cures and ages, and a coating crew routes and fills those as a normal part of the prep day. “Spalling” or “scaling” near the door is the salt damage described above. A white powder or crust, usually near a wall or a crack, is mineral salt carried up by moisture moving through the slab. It brushes off, but it tells the installer to take the moisture reading seriously on that floor, and the reading decides the primer.

“Settlement” is the word to stop on. A crack with a lip you can catch a shoe on, a gap that has opened between the slab and the foundation wall, or a floor that slopes somewhere it was not poured to slope can mean the ground under the concrete moved. A coating crew coats concrete and does not judge structure, and a coating over a slab that is still moving will crack along the same line. If the report flags settlement, that conversation belongs with whoever evaluates slabs and foundations, and the floor waits until the answer is that it has stopped.

How many days before the moving truck does the floor need?

Count backward from the truck. Last comes the cure window the written estimate names, typically 24 to 72 hours before vehicles depending on the top coat and the weather that week. Before that sits the coat day, and before that the prep day. Earlier still, the measure and the written estimate, which has to happen first so the slab gets metered and the repairs get priced.

Foot traffic is fine the next morning after coat day, so movers can walk a coated floor long before a car can park on it. What they cannot do is drag or roll heavy loads across it while it is young. The full schedule, including what waits until later in the first week, is laid out in epoxy cure time, day by day.

Summer is moving season here, and humid river-valley weather pushes a cure toward the long end of its window, so a July closing deserves a little more room than an October one. The one-day polyaspartic system shortens the whole schedule when the gap is tight, with prep and every coat done in a single working day.

What has to happen in the garage before the floor, and what waits until after?

Anything that drips or gets sprayed near the floor goes first. Anything that sits on the floor goes after. In an empty garage that order is easy to keep, and a new owner usually has a short list of garage work anyway.

Before the coating:

1. Wall patching and painting. Drywall mud, primer drips and overspray all land on the floor, and on a finished floor they are permanent specks. Paint the walls, let them dry, then coat.
2. Garage door and opener work. A new door, new tracks or a new opener means a crew on ladders with tools over the slab. The rubber bottom seal also meets the floor at the threshold, so if the door is being replaced or the seal changed, do it first or line the two crews up so the coating edge and the seal meet cleanly.

Then the floor, then the cure.

After it, in roughly this order: shelving and wall storage go up, the garage fridge or freezer rolls in on something soft and gets set down instead of slid, and the movers bring the dollies and the boxes. On moving day the movers will want to stack boxes just inside the garage door, the closest flat spot to the truck. A few sheets of cardboard on that spot before the truck arrives keep the box corners off the coating.

Should the basement be coated in the same empty-house window?

Only if the slab passes the moisture reading. An empty basement is the same one-time chance as an empty garage, with nothing stored down there to carry up the stairs. The difference is the cure. A basement slab is cooler and the air is still, so it reaches each step later than a garage floor does. In a house getting both floors, the basement is usually the one that sets the move-in date. Both can be measured on the same visit.

Basement slabs in the river valley stay damp longer than most, so the meter decides whether a basement gets a standard system, a moisture-tolerant one, or no coating at all. The basement page covers what coating the basement floor involves, from the moisture test to the metallic finishes rec rooms get.

The previous owner’s basement floor may also come with its own history. Painted concrete, carpet glue under a removed rug, or old tile all have to come off before a coating will hold, and coating over old paint, glue or tile on a basement floor walks through each one.