My Bedroom Floor Is Uneven

Foundation issues deteriorating wood supports especially sills which rest on the foundation footer improperly installed joists or sub floors and other issues can all cause a floor to slope or sag.
My bedroom floor is uneven. On the top side of the floor another fix it idea to lay down new hardwood over the existing floor. However even beyond the cosmetic issues there are other problems uneven floors may herald. If you have an uneven floor in your house it can be a chore to set up furniture or even just walk depending on how uneven the floor is. The cause is usually settling or shifting of the foundation underneath the floors.
Uneven floors are rarely caused by problems with the floor itself. If the floor beams and joists are made from wood like the ones above a crawl space they will usually bend rather than crack. 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 can take a ball put it on the floor and it rolls down the sloping surface then there is likely an issue with your foundation.
A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too. Uneven floors can be a very frustrating issue to deal with. The replacing of the boards was botched by the builder and has resulted in this patch being uneven as well as spongy other parts of the floor because of. Mold and or rot in your crawl space.
The bedroom floor the room above subsequently sunk slightly and small repairs were needed to pipes which involved lifting some of the chipboard sheet to access repairs via the bedroom floor.