We just bought a house and want hardwood floors. Right now the family room has tiles and we got different opinions whether to remove the tile and have the hardwood floor nailed or just keep the tile and glue the hardwood to the tile.
One floor guy told us to remove it since the wood will last only as long as the tile (whatever that means). Other told us to keep it and it should not make any difference.

Please some advice....

Thanks and regards
Aldo

I know some people say you can glue over tile but I never have and probably never will. My choice would be to either remove the tile and nail down the hardwood assuming you have a plywood or an appropriate OSB subfloor or the other choice would be to install a floating engineered wood floor. If you decide to go over the existing floor whether floating or gluing down the tiles have to be nice and flat and even, you don't want one tile higher then the one next to it.

Over concrete and the tiles well bonded, I have no issue with embossing the grout joints and gluing down engineered wood.

Over wood, the tiles and everything down to bare flat wood, would all come out, or I'd walk away from that one and let someone else do it at their risk. Especially solid wood flooring.

I too have successfully glued down engineered floor over existing ceramics. One thing I have always done is run my buffer over the tile first using a 24 grit sanding pad, and sometimes a grinding wheel, with the belief that this helps with adhesion. Since I never done one without do this first, I have no way of knowing if it helps, or is needed.

That was my next question. If you abrade the tiles first?

Abraid, & coat with latex milk ( grout or thinset additive )