You can apply different finishes to your walls using the handy Materials Paintbrush. The materials catalog contains an excellent selection of brick, concrete, wood and stone finishes.
To apply a material to a wall:
Display your model in 3D, and make sure the wall face you want to apply the material to is visible in the view.
Select
Edit > Materials Paintbrush,
or click the Materials Paintbrush button on any tabbed toolbar.
In the catalog panel, select the material you want to apply.
Click on the wall face that you want to apply the material to. The material is immediately applied.
Right-click and select Finish.