Should i tile right to the sub floor. Or do i leave room for a baseboard? or do i put the baseboards over top of the tile and glue them on?
Baseboard goes on top of the tile. The tile doesn't have to run clear to the floor, but does have to come down far enough to be covered by the baseboard. Then you will have to shim the bottom of the wall to keep the base from tilting. This will leave room for nailing without hitting the tile. If the tile runs all the way to the floor, place your nails so they are going thru the grout line in between the tiles.
You really need a baseboard. Especially if your home is not on a concrete slab. Your sub floor expands and contracts with weather and humidity changes. This will put stress on your grouted areas. It can also trap moisture which will create mold underneath your floor.
You first need to place tile backer board on the sub floor. This step prevents the floor from flexing which will crack the tile in due time. But, to answer your question. Put the tile down first, then place the baseboards up against the wall over the tile. Set tiles 1/4 away from the walls. Do not leave any grout to harden which is not level to the tile near the walls or the baseboards will not lay flat against the tile. Good Luck
