A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too.
How to level a wood floor with cement.
On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.
Whether you re going on to install hardwood ceramic tile or laminate one of the most important steps of any flooring project is making sure the subfloor foundation is level.
Slip shims under the low end of the 2x4 rail until it s perfectly level then use a scribing tool to transfer the unevenness of the floor onto the rail.
How to level a floor.
When you re finished vacuum the floor thoroughly with a wet dry vacuum or sweep it with a broom.
A dust mask will not give you enough protection.
Check your wood flooring manufacturer s recommendations and sand any high spots with a concrete grinder.
If you take the time.
Hardwood floor installers often use the term level when referring to subfloors when actually they are meaning the term flat.
Level floors are critical for reducing.
Typically the floor must be level and uniform within 3 16 inch every 10 feet.
How to level a wood floor sub floor.
Keep checking the floor with a level as you grind the concrete.
Grinding and repairing a concrete floor can create concrete dust so be safe and wear a respirator.
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.
Use a long level and tape measure to check that the floor is level.
How to level a subfloor for a hardwood floor install.