How many bags of thinset or mortar I need for 130sqft tile floor, plus I like to know if could use mastic instead, for a wooding floor I need to use a backboard.

Hi Tornado...

What kind of wood floor?

What is the application... kitchen, bath, hallway,etc?

What kind of tile?

What size tile?

No Mastic for floor tiles ;)

Answer the questions....Thanks

Mark