On Sat, 2 Jul 2016 22:43:26 -0400, Ed Pawlowski wrote:

On 7/2/2016 10:04 PM, wrote:

We saw some porcelain tile we liked, but it's ok to use concrete board over OSB? I'm not sure why the Home Depot guy was so insistent that that was a bad idea.

Thanks,

Mike
Because it's a bad idea. Not saying your installation WILL fail, but
the chances of success using OSB will be significantly lower rhan with
plywood - and just putting plywood over the OSB is not quite as
effective as replacing the OSB and doesn't raise the floor level as
much.


I'd talk to a real tile guy, not the Home Depot guy.


I did when I tiled my foyer.