Floor Under Bathtub Rotted

Wrapping up the subfloor in the adjacent bathroom required an interesting puzzle piece to bridge the floor joists to match the diagonal shiplap of the existing subfloor and to accommodate a toilet drain.

Floor under bathtub rotted.

The floor under your bathtub is the main element in supporting the tub. Therefore about the only solution is to pull up the flooring and replace all the rotten areas then put all back together. It goes under the flange and transfers the load of the flange and toilet and you out onto more solid surrounding wood. In the worst case scenario the damage is so severe that the floor gives way sending the bath tub toilet or shower stall crashing down to the floor below.

Pick a time to do it when the bathroom traffic will be lighter like during the summer months when people are outside more if possible and get started. The most common reasons to replace this floor are that it can no longer support your bathtub and the wood has become rotten. In other words if your floor is squeaking sagging and has soft spots when you put weight on it then it most likely has some rot. Rotten floor joists under a bathtub must be replaced to eliminate safety concerns when the tub is used.

When moisture gets under the tub or shower basin or between the shower liner and the wall it encourages mold and mildew to form which eventually leads to wood rot in walls and the subfloor. How to replace a rotten floor in front of a bathtub. But if your floor is severely rotted say more than an inch beyond the flange you re stuck replacing the flooring around the toilet. Inspecting the joists and subfloor from below tells you which approach to take.

Therefore you ll want to keep that floor in peak condition. Around the toilet the floor may get flooded from overflowing. If only the area directly below the flange is rotted you can install a two piece steel closet flange support. Rotten bathroom floor is not so good but the longer you wait to repair it the worse it gets.

Sure it will take you some work but the end result is well worth the effort. If you find that your bathroom floor has rotted through you will need to replace it.