He simply filled low areas.
How to level a wooden floor for tile.
Make a final check with the level to be sure all the high and low spots are gone.
2 to pour self leveler on plywood directly and skip hardiback.
On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.
Which could raise the floor substantially.
You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings.
If you find hollows and valleys you must fill them with a self leveling underlayment.
Cover the subfloor in a latex primer suitable for the subfloor s material.
Floors are rarely perfectly level.
Cabinet installer set cabinets on concrete subfloor and shimmed only to level rather than to raise to potential new floor level.
Spread the leveler over the floor with a trowel or a gauge rake so it covers each low area completely.
If an engineer found no structural issues you may be able to level the floor by applying a cement based self leveling floor product such as henry level pro self leveling underlayment available.
Floor tile installer most likely did not level the floor by grinding 1 8 in high areas and filling 1 8 in low areas.
How to level a floor for installing tile before you install file flooring follow the directions above for fixing high spots and low spots in a wood or concrete subfloor.
Prepare a wood subfloor for tile a successful tile installation project requires a level surface.
And 3 grind the hump of the plywood.
Mix the floor leveling compound with water in a bucket following the manufacturer s directions.
Check for dips in the floor by sliding a 4 foot to 6 foot straight edge in different directions all around the room.
Apply the primer evenly with a roller brush.
If the area is very large use a long straight 2 in 4 in 5 1 cm 10 2 cm board and set your level on top of it.
In order to level the subfloor to install tile the builder suggests 1 to put a paper on plywood and pour self leveler and skip hardibacker.
If the floor is uneven lift up the board until it is level so you ll know how much flooring compound you ll need to even it out.
Allow the primer to dry according to the manufacturer s instructions.