They just let the floor crack and then crack chased with grout.
Q
Concrete
Stucco and Windows and concrete
Base board
Span
Steel
Kitchen window
Carport.
The door.
Rusty panels.
Steel panels.
Could do this in concrete with 3/4" extruded reveals.
Could do this in concrete with 1x12 boards on ply to make 3/4" extruded reveals.
They just let the floor crack and then crack chased with grout.
Q