Hi Neil_47, You can specify the wall thickness clicking the wall segment and selecting the right dimension in the properties bar. But if you wish to use a wall code, just go to the Detail tab, draw a polygon following the wall contour and fill it with a pattern. Also, you can use style lines to draw the polygon. If you move the polygon to a different tab, you can "play" with the colors (Options--> Screen colors) Notice that these polygons, lines and patterns will appear only in the floorplans, but they will not appear in liveview Let us know if you need additional help Patricia