Uneven Slabs Need Self-Leveling Concrete Underlayment
When a slab dips, humps or slopes, no finish sits right on top. Self-leveling underlayment is the concrete solution that fills low spots and creates a flat, bonded surface ready for tile, plank, polish or any other floor system. Detroit Concrete measures your substrate, primes it, pours the leveler, and lets gravity do the work. The result is a floor that actually sits flat.
Tile Cracks, Plank Lippage, Polish Telegraphs, All Start Below
A slab that is not flat is the root cause of most finished floor problems. Tile cracks at the grout line because the substrate dips underneath. Vinyl plank shows lippage where boards meet because the slab humps. Polished concrete looks dull and patchy because every patch and low spot shows through the polish.
Self-leveling underlayment solves this before the finish goes down. We prime the substrate with a product matched to what it is (concrete, plywood, or existing tile), mix the self-leveling compound to the manufacturer's water ratio, and pour it onto the floor. The compound flows to the lowest point, settles under gravity, and cures into a hard, bonded surface.
We check moisture, identify high and low spots with a straightedge, and confirm the substrate is sound. We also determine what the substrate is (concrete, plywood, tile) so we can pick the right primer and product.
Prime and set the perimeter
The substrate gets primed with the manufacturer-matched primer. We mark the finished elevation and contain the perimeter so the leveler stays where it should and does not run into adjacent spaces.
Mix and pour to elevation
The self-leveling compound is mixed to the published water ratio, poured onto the primed substrate, and gently raked or smoothed to the marked elevation. Gravity handles the actual leveling.
Cure and prepare for finish
The compound sets to walkable in a few hours and cures fully over the manufacturer's window. Once cured, the new surface is flat, sound, and ready for tile, plank, polish, or any other finish.
Common applications
Renovation Floors, Tile, Heated Systems All Depend on It
Renovation floors are where self-leveling underlayment earns its place. Old slabs in older homes, patched slabs, slabs that have settled or cracked rarely meet the flatness that modern finishes require. Self-leveling turns them into a usable substrate without a full tear-out and replacement.
It also sits under micro-topping when extra fill is needed to reach the right elevation, under radiant heat underlayment as part of the floor stack, and under basement floor systems where the slab is often uneven. The flatness is what every system above depends on to perform.
When you need it, what it bonds to, thickness and finishes above in Detroit.
Not always. If the substrate is already within tolerance for the finish you want, self-leveling is unnecessary. We measure first; if the dips and humps fall outside what the finish can handle, self-leveling is the honest fix.
All three, with the right primer and product for the substrate. We pick the matched primer and self-leveling product for what the floor sits on, so the bond is engineered for the surface, not assumed.
Most products handle up to about an inch in a single pour, more in lifts with proper bonding. We size the pour to the substrate's worst dip and the finish's flatness requirement.
No, it is a finishing prep, not a structural floor. It bonds to a sound substrate and brings it flat. If the slab below is structurally compromised, that has to be fixed first.
Walkable in a few hours, ready for tile or plank typically the next day, ready for polishing or staining once fully cured to the manufacturer's published window. We give you the exact timeline on the project.
Homeowner reviews
What Detroit Homeowners Say About Their Self-Leveling Pours
Old kitchen slab was a wave. Self-leveling brought it dead flat and the tile went down without a single shim. The result looks like a brand-new build.
G. R.
Detroit
★★★★★
Polished the basement floor after a self-leveling pour. The polish was perfect because the substrate was actually flat for the first time.
V. D.
Dearborn
★★★★★
Plywood substrate in our addition. They primed it properly and the leveler bonded so well I forgot it was on plywood. The plank floor sits perfect.
O. B.
Ann Arbor
★★★★★
Heated floor underlayment plus self-leveling plus micro-topping plus polish. Whole stack done in sequence and the finished floor is dead flat with even radiant heat.
I. U.
Sterling Heights
From the blog
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Tell us the substrate (concrete, plywood, or tile), the finish you want above it, and the room dimensions. We will measure, plan the pour, and send a written quote within one business day.
