2nd Floor Bathroom OSB Subfloor Replacement? - Flooring - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring


Thread Tools Display Modes
Old 04-07-2010, 02:31 PM   #1
Join Date: Apr 2010
Posts: 1
Rewards Points: 10

2nd floor bathroom OSB subfloor replacement?

Good afternoon,

I'm working on remodeling a 2nd floor bathroom, with the intent of putting tile down. After pulling the vinyl squares up, I had this:

(The vantiy will be going as well shortly, the tub is staying). The subfloor looks pretty beat up, some chunks are missing, etc. I would like to replace it, the question is how. The joists underneath are a truss setup:

The OSB has this marking underneath:

That is 18" high, 24" O.C. The bathroom is 5' wide, 8' deep and the joists run in the door to the tub direction. In addition the OSB that's down is not flat at all - there's a rise near the toilet, and the entire floor flexes when walked on. It obviously needs leveling and strengthening if my tile is to stand a chance (even with Ditra going on top, and Schulter themselves say a second layer of ply is needed anyway for 24" O.C.)

If I cut out the entire floor in the bathroom, I'd only have two joists length wise to tie to (of course in the middle) and nothing width wise nor along the edges. Is this worth persuing? Should I just put a new sheet on top of the OSB? I can't afford to be taking out walls, and I'm not really clear on how I would support replacement OSB the easiest. My good friend Google is letting me down as well, with those trusses down there how to install/secure crossbeams is not obvious (at least to me).

Any help is appreciated.


blargh is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1