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Floors · Self-Leveling Underlayment

Uneven Slabs Made Flat in Laval

When a concrete slab dips, humps or settles unevenly, no finish sits right on top. Tile lippage, plank gaps, polish telegraphing, micro-topping cracks. Laval Concrete applies self-leveling compound to bring the slab into tolerance, creating a sound, flat substrate ready for whatever finish you choose. One pour, one cure window, one flat surface.

  • Engineered bond to substrate
  • Gravity-leveled, no shimming
  • Free written estimate, firm timeline

The flatness problem

Why Substrate Flatness Breaks Finished Floors

A slab that looks level to the eye often isn't. Older concrete settles. Patched slabs have ridges. Plywood substrates flex. When a finish goes down on an uneven surface, the finish itself fails. Tile cracks at the low spots. Vinyl plank shows gaps. Polished concrete looks dull where the grinder couldn't reach the valleys.

Self-leveling compound solves this before the finish is installed. We prime the substrate with a product matched to its material, pour the leveler, and let gravity do the work. The compound flows to the lowest point, settles to a perfectly flat plane, and cures into a hard, bonded surface.

From that point forward, polished concrete, stained finishes, epoxy coatings, or micro-topping overlays all go down on a substrate that is actually flat. The finish performs as designed.

Recent work
laser-screed checking a self-leveling concrete pour in Laval
self-leveling underlayment being applied in a Laval renovation

The sequence

How Self-Leveling Pours Get Done

  1. Measure and assess the substrate

    We check moisture, identify high and low spots with a straightedge, and confirm the substrate is sound. We also determine which primer and self-leveling product match the substrate material.

  2. Prepare and prime the surface

    Perimeter dams are set so the leveler stays where it should. The substrate is primed with the manufacturer-matched primer, which ensures chemical bond and prevents the leveler from drying too fast.

  3. Mix and pour to elevation

    The self-leveling compound is mixed to the published water ratio, poured onto the primed substrate, and gently raked to the marked elevation. Gravity handles the actual leveling.

  4. Cure and finish preparation

    The pour sets to walkable in 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, Polish & Micro-Topping

Renovation work is where self-leveling shines. Old slabs in older homes rarely meet modern flatness standards. Instead of tearing out and replacing, we level the existing slab and install the finish on top. The cost is a fraction of a full replacement and the result is indistinguishable.

It also sits under polished concrete when the slab has patches or minor settlement, under micro-topping when extra fill is needed for slope or elevation change, and under radiant heat underlayment as part of the thermal stack. The flatness is what every system above depends on to perform.

Schedule a floor assessment
mixing self-leveling compound on a Laval renovation site
Flat For any finish
Bonds to Concrete, plywood, tile
Free Written estimate

Common questions

Self-Leveling Underlayment Questions, Answered

When you need it, what it bonds to, thickness and finishes above in Laval.

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 Laval Homeowners Say About Their Self-Leveling Pours

★★★★★ 4.9 · 87 reviews on Google
Read all reviews →
★★★★★

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.
Laval
★★★★★

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.
Repentigny
★★★★★

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.
Terrebonne
★★★★★

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.
Longueuil

Ready to level

Get a Free Self-Leveling Quote

Tell us the substrate type, the finish you want above, and the room dimensions. We measure, calculate the pour, and send a written estimate within one business day.

We'll assess the slab and provide a written self-leveling quote within one business day.