Piney wrote:Can tile be installed on a 2nd story's floor ? We have a small full bath upstairs. Daughter's off to college so its time to remodel that area

I might even get to build a reloading bench
Its a small bath with lineolum (sp ?) . I've installed tile in the past on a 1st floor bathroom's wooden floor by putting down a layer of concrete board first. Im' concerned of the potential for the floor flexing and cracking the grout. Might that all that is needed on an upstairs floor -install it over concrete board ?
Yes. Pull the commode and sink (if pedestal). Scrape up the linoleum / vinyl flooring. Make sure the
subflooring is nailed or screwed down. No loose or moving portions of flooring. Concrete board (various
manufacturers) is a good underlayment for tile. Attach with screws, NOT NAILS. Use fiber tape and
tile mastic to bed the screw heads and tape & bed the joints. Set tile using using the correct thinset/
tile mastic. Use the correct notched trowel for the size and type of tile being installed.
*note: If the subfloor is pressboard, set the concrete board in mastic prior to screwing it down.
Make sure to use coated screws of the proper length for secure attachment. Secure the edge and
the field per manuf directions/spacing requirements.