Grey epoxy floor lying dead flat wall to wall in a finished basement

Self-Leveling Underlayment · Philadelphia

Self-leveling underlayment, poured flat under your new epoxy floor.

Concrete that waves, dips, or has been patched a dozen times shows through any coating you put over it. Epoxy self-levels only thinly, so it follows the slab it lands on. A self-leveling underlayment is a thick pour that fills all of that and cures flat, on its own where the slab demands it, or as the step before our own epoxy so the finished floor comes out near perfect.

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What the pour fixes

The flat comes from underneath.

Any floor follows the slab under it. Put a coating over waves, low spots and old patch lines and you get a shiny floor with waves, low spots and old patch lines still in it. The underlayment goes down first, thick enough to fill the low ground and cure flat, and our epoxy goes over the top of that.

A thick self-leveling pour, deep enough to bury waves, low spots and old patch lines
It finds its own level as it flows, so the flat comes out of the pour itself
Diamond grinding first, so the pour bonds to the slab instead of sitting on dust
Cracks and joints cut out and repaired before anything gets poured
It goes down on its own where the slab is the whole problem
Or it goes down first and our epoxy goes over it, when the finished floor has to look near perfect
We pour it under our own finishes only, so one crew owns the whole floor
Installed nights, weekends, and in phases, so the building keeps running

Grey epoxy floor running flat and unbroken through a building entry

Two ways in

On its own, or under our epoxy.

Sometimes the slab is the whole job. Where concrete has moved, been cut open and patched, or never got finished right in the first place, the pour goes down on its own and levels the room out.

The other way is as the step before the floor you actually asked for. We pour the underlayment, let it cure flat, then run our own solid color epoxy over it. That is how you end up with a finished floor and no waves in the light, and it is why a room that looked hopeless on the walkthrough can come out near perfect.

One boundary worth saying out loud. We pour underlayment under our own finishes. If you need a slab levelled so another trade can lay tile, terrazzo or LVT over it, that is not work we take, and you will hear that on the phone rather than at the estimate.

Pearl metallic epoxy floor down a studio corridor

Our installs

Floors that landed flat.

Grey epoxy floor lying flat across an apparatus bay — Apparatus bay, flat grey epoxy

Tile red epoxy floor with a coved base in a commercial utility room — Utility room, tile red epoxy

Grey epoxy floor running flat at a parking garage entrance — Parking structure entrance, flat grey epoxy

Straight answers

Self-leveling underlayment, in plain terms.

Why not just pour the epoxy thicker?

Epoxy self-levels, but only thinly. It flows out smooth over whatever is beneath it, which means it copies the slab: a wave stays a wave, a low spot stays a low spot, and an old patch line still reads through in raking light. A self-leveling underlayment is a different product poured at a different thickness, and that is what takes the shape out of a floor.

Does every floor need it?

No, and most do not. Most slabs take our epoxy directly once we have diamond ground them and repaired the cracks. The underlayment earns its cost when the concrete has real movement in it, when it has been cut open and patched over the years, or when the room has to look near perfect when it is finished. We tell you which one you have on the walkthrough, before anyone talks price.

Can you level our slab so we can put tile or LVT down?

No. We pour underlayment under our own epoxy floors, not as preparation for another trade's floor covering. If tile or LVT is what you want on top, the contractor installing it should own that whole scope, levelling included. It is a straight answer and it saves us both a wasted visit.

Do we have to shut the building down?

Usually not. Most of our commercial work runs at night, on weekends, or in phases by section. A pour needs cure time before our epoxy goes over it, so we walk the space first and build the schedule backward from the day you need the floor in service.

Tell us what the slab looks like.

Walkthrough, spec, and written estimate at no charge.