Originally Posted by B Parker
Orange, I'm no expert here, but I can tell you these guys are really helpful, but will need more specific details on your project to help you. i.e; what does your floor consist of after you removed underlay and vinyl.
The more detail you give the more the guys are able to help.
I had a query about the removal of the vinyl with 1/4 underlay and the 8x8 ceramic with ply underlay.
see Removing and replacing ceramic tile floor
I have removed all of the underlay and vinyl, and underlay and ceramic.
My subfloor is 5/8 t&G OSB; 2x10 joists on 16" centres.
My underlay is 5/8 exterior plywood screwed 4" on perimeter and 6" in field.
Yes I know the forum is helpful. I retired in Dec and have had some questions/answers/advice thru the forum (electrical , drywall, flooring ..). Great spot!