hi all I have a new project I am starting and need some advice, my mrs has decided she would like oak flooring (engineered) through the downstairs of the house, she does not want any thresholds so continuous from hall way to living room to kitchen , the kitchen is a tiled floor, the hall and living room have pine boards, the questions I have are, I am not sure if I should pull the tiles up or leave them down and float or glue over them?and should I glue or hidden nail the boards into the pine flooring? As the kitchen is a different material not sure on best way to attack it,