On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.
Floor levelling shims.
To shim the floor take a straightedge or a level and look for imperfections in the flatness of the floor and determine if it needs to be raised or lowered.
Plumb pak pp836 55 toilet leveling shims multi purpose design for furniture cabinets and tables 8 pack white 8 count 4 6 out of 5 stars 1 026 4 99 4.
A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too.
If the uneven floor is due to floor joists that have warped or twisted over time or were incorrectly installed the only way to level the floor is to remove the subflooring and shim the joists.
You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings.
Figure out how much taper you ll need.
Contractor cedar shim eastern white cedar shims are virtually a eastern white cedar shims are virtually a maintenance free wood.
There are probably as many ways to level a floor as there are out of level floors being leveled by someone so here s matt jackson s take on making precise extra long shims.
Clean the floor area to be filled with a broom or vacuum and dampen it with a wet sponge to avoid rapid drying.
You do want them fairly close together so yes 12 to 16 inches apart.
Self leveling compound is a cement based mixture that is applied in a near liquid state.
Find a straight board.
Naturally decay and pest resistant.
On center means you measure center to center not strictly between the shims.
These thick shims are scored to make size adjustments easy break off the excess shim for a custom fit around fasteners or corners.
Step by step process for cutting a six foot ling shim from a 2x4.
Plumb pak pp836 55 toilet leveling shims multi purpose design for furniture cabinets and tables 8 pack white 8 count 4 6 out of 5 stars 1 022 4 99 4.
Use them to align cabinets doors and windows or for other rough leveling.
What he is describing is to lay shims over your existing floor.