[Hopefully a simple question with a simple reply; on Usenet, you never know]
Helping a friend tile her kitchen counter, I'm making my bill of
materials. Just want to double-check one thing.
Question is: what thickness plywood should I use?
The plan is to put plywood over cabinets, then "wonderboard" (1/2"
cement-fiberglass board) over that, using thinset to bond it, then tile
over that. I was planning on using 1/2" plywood (counters are 24" deep),
but now I'm wondering if I should use 3/4". Or would that be overkill?
And what grade? Seems to me that since it's there for support only (the
cement board provides the smooth surface for tiling) that I could get
away with something like CDX.
Thanks to those who can provide helpful advice.
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