Replies

1. 
   Frankie | Apr 28, 2006 02:28am | #1

   Why? It is more expensive and offers no add'l benefit - unless there is a structural load/ issue you have not mentioned.

   Basically you are referring to Marine or PT plywood. The marine ply is way overkill ($$$$) and the PT may react with the thinset or adhesive.

   F

   >Pfont color=#61B2E0B/B/font—Hunter S. Thompson

   from Fear And Loathing In Las Vegas

2. 
   andybuildz | Apr 28, 2006 03:13am | #2

   why would you even want to do that is the question

   If Blodgett says, Tipi tipi tipi it must be so!

   TipiFest 06~~> Send me your email addy for a Paypal invoice to the greatest show on earth~~>[email protected]

3. 
   shorebird | Apr 28, 2006 04:49am | #3

   Thanks for the input. I also agreed, but it was already installed. I was just wondering if anybody else had ever heard of using all weather plywood for tile backer. My plan is to remove the plywood and install cement board. Thanks again for your input.

1. 
   MGMaxwell | Apr 28, 2006 05:23am | #4

   Well now if there is no thickness issue you could attach the CBU to the plywood and tile on top of that.

1. 
   KirkG | Apr 28, 2006 07:53pm | #5

   Or cover with drywall and use Kerdi.

4. 
   cynwyd | Apr 29, 2006 12:48am | #6

   I use exterior ply per the Bryne tile book.

   Then laminate with  roofing felt set with roof cement .

   Cover that with Hardibacker.

   It's comforting to have a watertight system before you even tile.