How do you use barn siding for walls in your family room?

if it's a block wall: nail in furring strips every 24" on center with hardened nails top to bottom on the wall (wear eye protection)

if it's a frame wall: buy a stud-finder and a chalk line, find the studs and pop a line top to bottom at the center of each stud. . .get the stud finder that also shows where any electric lines are behind the wall so you won't nail into any electric

attach the siding with finish nails either application (longer nails for the wood wall application) or common nails if you really want the barn look

hope this helps!