Floor leveling
Floor leveling is preparation work bought for the sake of whatever goes on top. Tile cracks on a floor that moves, vinyl plank telegraphs every dip, and a laminate click joint opens where the floor waves. Getting the surface flat before the finish goes down is cheaper than lifting it afterwards, and it is the step most often skipped. It sits inside our floor repair and installation service.
Service family Floor repair and installation
Scheduling Monday through Friday, 8 a.m. to 4 p.m.
Service area Six counties across Southeast Michigan
Phone (734) 540-0347
What floor leveling means
Bringing a floor surface within the tolerance the finish material needs, using a pourable compound, a build up of sheet material, or by taking a high spot down. It is a surface operation. It does not straighten a house, lift a sagging beam or correct a foundation, and anybody who tells you a bag of compound does those things is selling you something.
Flat and level are not the same thing
Level means horizontal, measured against gravity. Flat means no humps or dips across the surface, whatever the overall slope. Tile and plank care about flat. Furniture and marbles care about level. In an old house you frequently want a flat floor on a gently sloping plane rather than a level one, because making it level would mean three inches of build up at one wall.
Where our work stops and an engineer starts
Surface leveling and subfloor build up are ours. The list below belongs to a structural engineer and the contractors they specify.
- A floor that is still moving or settling year on year
- Sagging joists, beams or a failed post in the basement
- Foundation movement, settlement or a cracked footing
- Anything requiring a permit and a structural inspection
- A floor that has dropped more than an inch across a room
Self leveling compound, and where it works
A cement based compound mixed to a pourable consistency, poured onto a primed surface and allowed to find its own level. It is excellent on concrete and on a rigid, well fastened wood subfloor with a suitable primer. It needs a perimeter dam, a working time measured in minutes and enough hands to keep pouring. It is not a filler for a bouncy floor.
Plywood, sleepers and building a floor up
Where the dip is deep, compound is the wrong tool and money runs away with it. The answer is tapered sleepers or shims screwed to the existing floor with a new sheet layer over them, which builds the low area up in wood rather than in cement. It is lighter, cheaper by depth and it can be tapered out gradually toward a doorway.
Taking a high spot down
Sometimes the fault is a hump rather than a hollow, and the cheapest fix is removing material instead of adding it. A raised joist edge, a lifted seam or a ridge of old adhesive can be planed or ground back, which costs an hour and changes the whole room. We always look for this first, because it is the only option that makes a floor thinner.
What gets measured first
- A long straightedge walked across the room in both directions
- A laser or water level to record the overall plane
- The worst dip and the worst hump, measured and marked
- The finish material and the tolerance its maker requires
- Whether the floor is solid underfoot or deflecting
Old houses that settled long ago and stopped
Plenty of houses in Ann Arbor and the older parts of Ypsilanti have floors out of level by an inch or more and have been stable for sixty years. That is a house that found its position, not a house with a problem. Those floors get made flat enough for the finish and left sloping, and that is the right answer rather than a compromise.
Tile, and the flatness it demands
Large format tile is the least forgiving floor covering there is. A hump under a twenty four inch tile becomes a lipped edge you catch with a toe, and a dip becomes a hollow tile that cracks within a year. Manufacturers publish a tolerance and it is tighter than most subfloors achieve. Where tile is planned, leveling is not optional and tile repair and regrout work later is the alternative.
Vinyl plank and the tolerance it accepts
Luxury vinyl plank is more forgiving than tile and less forgiving than carpet. Its click joints tolerate a gentle wave and fail over a sharp change, and on a floating installation a dip becomes a spot where the floor clicks underfoot. A flat floor is also the difference between a plank floor that feels solid and one that feels like plastic, which matters more than the specification suggests.
Basement slabs that were never flat
Poured basement slabs are finished to a much looser standard than a floor upstairs, and many slope toward a drain on purpose. Where a basement is being finished, the slab gets mapped before any material is chosen, because the finish decides how much leveling is worth paying for. That work happens inside basement finishing rather than as a separate visit.
Doors, baseboard and what a flatter floor changes
Raise a floor by half an inch and every door in the room now catches at the bottom, the baseboard sits half an inch lower against the wall and the threshold at the doorway has to change. None of that is difficult and all of it costs money, so it belongs in the quote. Door adjustment and baseboard work usually follow.
The transition at a doorway
Where a leveled floor meets an unleveled one, the difference has to be resolved in a doorway rather than in the middle of a room. A tapered build up over the last few feet, or a transition profile at the threshold, both work. Getting that detail right is what stops a leveled room from looking like a leveled room.
Moisture under a leveling compound
Pouring cement based compound over a damp slab traps the moisture and pushes it into whatever goes on top. On any below grade floor the slab gets tested before a bag is opened, and where moisture is present the answer is a vapour barrier or a different build up rather than a thicker pour. Skipping that test is how a new floor cups six months later.
When not to level a floor
If the floor is soft, bouncy or still moving, leveling it is the wrong spend. Compound poured over a failed sheet cracks along the line of the failure within a season. The floor needs subfloor repair first, or the fastening fixed through squeaky floor repair, and then leveling makes sense.
How long the work takes
A single room poured with compound is a day, plus a day to cure before anything goes on it. A build up in plywood over sleepers is one to two days. A whole first floor is a week and it is planned rather than fitted in. Sellers with a home inspection repairs list or a pre listing deadline should allow for the cure time.
Book floor leveling with our crew
Lay a long straightedge on your floor where the new material is going and look under it. Whatever gap you can see is what we are pricing. Where new hardwood flooring or trim work through trim carpentry follows, we sequence both. An annual home check tracks movement year to year. View our Portfolio, then contact us now for a free quote.
