Final Major Project - Fixing 'flickering' On Extruded Walls

Final Major Project - Fixing 'flickering' On Extruded Walls

The top roof/tower of the building has some flickering as does the windows below. I wasn't entirely sure on how to fix this so I looked on some forums and found half a solution. 

The first solution was changing the persp camera settings. By default, the near clipping value was set to something low like 0.010 so I tampered with the settings and set it to 100.0 which fixed all flickering for the windows. However, it did not fix the flickering for the roof/tower.

Here was the forum I went to for this fix

Here are the screenshots of the camera settings and the changes before and after...

Here are the settings and change after...

As mentioned this did not fix them all. The roof where I extruded the front face inward had this flickering effect equal to the distance I extruded. What I found out was this face was too close and thin to the actual top-surface that this is what was causing the flickering.

What I did to fix this was scaled the front face down in size and then extrude it. This did work. Here are the following screenshots of the process I went through for fixing this effect.

As you can see it is far to close to the roof's face that it is causing this flicker.

 Here is the same face, scaled-down so that it isn't to close and the faces are overlapping.

And finally, you can see there is NO flicker at all. What I was most pleased about with this is that this method got me closer to my original concept look than before.