Here’s an option for drawing the wall with the geometry using only basic native tools.
I drew the gable end without the roof and pulled the bottom of it down a little bit. Then I drew the center batten as a rectangle on the surface. Notice that the bottom of the batten does not come all the way down to the bottom of the face.
Using Move/Copy to make an array, I copied the edges of the batten outline to each side to outline the rest of the battens.
Dragging a right to left selection fence across the edges that extend beyond the slope of the roof selects them. Hitting Delete gets rid of them.
And it looks like this:
Next, Push/Pull on the face below the batten outlines makes the battens stand proud of the wall.
Push/Pull on the bottom face bring it up to the bottom of the battens.
This is good practice learning how to create geometry in SketchUp but unless you have some real need for this to be drawn as 3D geometry, a texture would be easier and would create less overhead.