Get Help from Bob Vila
- Give-Aways & Offers
- Monthly Must Do's
- DIY Project Ideas
- Step-by-Step Guides
- Inspirational Photo Galleries
Depending on the amount of sloping, you can use Floor Leveler. BEFORE you even go to the store, you need to measure the slope. BEFORE you leave the Home Center, DO read the Instructions to be sure you can use the Leveler on your particular slope.
You can also shim a NEW sub-floor. However, it may not be enough. YOu can shim the floor level BUT once you get all that weight back IN the bathroom, it will be out of level and you'll need floor leveler anyways. Thing is, I'm not sure that either method is advisable.
If you have the sub-floor ripped up, perhaps you can either 'sister' the joists or 'suppor t' the old joists w/jacks. You didn't say if the floor is on the 1st floor or where, and you didn't say what's UNDER the joists. (Concrete, the 1st floor, dirt, or what.) Depending, this will affect how it should be done. Heck, who knows, perhaps you have rotting joists. Since I can't see if from here, you may want to hire a Pro for just this part of the job. Sometimes, there are times to hire a Pro, and this could be one of them.
My best to ya and hope this helps.
Jay J -Moderator