Tub Rough Opening 63" - Fill the gap for 60" Tub


Old 05-12-15, 10:20 PM
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Post Tub Rough Opening 63" - Fill the gap for 60" Tub


I'm remodeling the bathroom in my house and am installing the bathtub. My bathroom's rough opening width is 63". When I install my 60" tub, there is still a 3" gap on the left side of my right drain tub that needs to be address. I'm at a loss for how to do this. Should I use Kerdi board and make it a shelf? Should I fill it with wood and then tile over it? Any help or thoughts would be greatly appreciated!

Here's a photo of the current setup

Thanks a lot!
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Old 05-13-15, 04:01 AM
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Join Date: Jul 2007
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You will have to build the wall out some, however, you will want to do it on the right hand side of the tub. The reason, is that the window will get in the way of the additional thickness of the wall. Unless you do a shelf as you have mentioned and stop it well below the window. Older homes that had a mud bed wall would have had the thickness of the wall built up to work with the tub and evenly spaced it from both sides. Having removed that thickness, you need to build it back up. You can sister thicker lumber to the existing joists to accomplish.
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