How do I frame joist/subfloor for a new bathtub?
Is there a standard way to frame a bathroom floor (i.e. the joists and subfloor) for a bathtub ?
I am remodeling my bathroom, have removed all wallborad, the floor, most of the subfloor, put in all new water and drain lines and IÂm now finishing up repairing floor and wall water damage (from an old roof leak). I have also sistered all the joists in the bathroom.
The old bathroom had just a shower which I will now upgrade to a bathtub. Since I have also removed some of the old floor framing (to repair weaknesses and reframe around toilet), I am wondering if I need to add/modify the joist framing to better accommodate the bathtub. Is there some standard joist and subfloor framing layout for bathtubs ?
I do understand that later on I may have to add support framing for the tub, eg. build a frame with 2x4s and Â¾" plywood to support the tub itself and possibly add 2x4s horizontal to the studs to support the lip. But at this point, IÂm primarily concerned whether there are any special considerations regarding the joist layout.