05:43PM | 10/24/02
Member Since: 10/23/02
14 lifetime posts
I was in the process of remodeling the upstairs masterbath. The previous owner had OSB(?) over the 1/2 inch plywood and there seems to be some discoloration on the plywood due to exposure to water. There is no rotting that's visible to the naked eye. Should I be concerned about the discoloration or is it okay to leave it as is? Many thanks in advance.


06:13PM | 10/24/02
Member Since: 10/23/02
14 lifetime posts
My apologies. Make that a 3/4 inch plywood. Professional advice needed. Thanks.


06:15PM | 10/25/02
Member Since: 05/02/01
17 lifetime posts
I would replace the OSB with treated plywood.


07:51PM | 10/25/02
Member Since: 10/23/02
14 lifetime posts
I will be replacing the OSB with concrete backer board. Is it safe to assume that the discoloration on the subfloor is okay?


03:40AM | 10/27/02
Member Since: 09/17/02
524 lifetime posts
If the plywood is solid then don't worry about the discoloration.


06:41PM | 10/28/02
Member Since: 10/23/02
14 lifetime posts
The plywood is still real solid. Thanks for the advice.


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