On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.
How to level single floor board.
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.
Raise the board until the level reads true then measure from the dip in the floor to the bottom of the board.
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.
In this video we show you everything you need to know how to level a floor into a perfect flat and level floor in your bathroom using self leveling floor com.
Cut a leveling strip a very long triangle from a 2 x 10.
Floors are rarely perfectly level.
Cut first leveling strip.
Rather than attempt to lift the floor by packing out between the boards and the joist the packing invariably works loose as the floor moves with use it is easier and more cost effective in the long run to remove the floor boards and level the joists by fixing new straight ones to the existing.
If the level isn t long enough lay a flat board along the floor with a level on top.