replying to ryan_hill, Iggy wrote:
Yep, in halves or 70/30, but that should only be done to a joist that's right
beside the flange's pipe or where your seam is perpendicular to the joists.
You're right though, best is to cut-out the flange from the pipe and keep the
plywood seamless and to install a new flange on top of the new plywood...as
the flange must be screwed into the plywood and fully anchored.

You'll need this to achieve that preferred operation - Internal Diameter PVC
Pipe Cutter
https://www.homedepot.com/p/HDX-Inte...7516/204277491
you may also want to go with a wax-free seal to avoid future problems -
Elastic Toilet Gasket (Wax Free) with Toilet Bolts Included
https://www.homedepot.com/p/Elastic-...1002/303074999
I find them much more secure, but have only used them for 10-years so I can't
speak to the wax's longevity comparison.

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