Fixing Walls Being Cut Off by Roof Planes

The most common reason for a wall to not generate correctly in 3D views, or if part of the exterior layer of the wall appears to be missing, is that a roof or ceiling plane is cutting into the wall preventing it from building upward.

To adjust the roof/ceiling plane

1. Locate the problem wall in floor plan view and Zoom  in on it.
   
   
   • In this simple example, a small roof plane extends into the siding and sheathing layers of a wall.
     
     
     
     
   • For illustrative purposes, the roof plane has a green hatch applied with a white background.
     
   
   
   
2. Click the Select Objects  button, then select the edge of the roof plane that touches the wall.
   
   
   
3. Use the roof plane's edit handles to move the intersecting roof plane edge so that it does not extend past the wall's exterior surface.
   
   
   
   

   If the roof plane is on a different floor than the wall it cuts in to, then you may want to select the roof plane and use the Display on Floor Above edit tool to temporarily show this roof plane on the same floor as the wall before editing. Once it no longer cuts in to the wall, you can use the Display on Floor Below edit tool to display it back on the original floor.

   
   
4. Create a Camera view of your model. Your missing wall should now display correctly.
   
   
   
5. If the roof plane seems to keep jumping or snapping back to the original location, Open  the Roof Plane Specification dialog for the problem roof plane and on the General panel, check the box beside No Special Snapping, then click OK.
   
   
   
   
   
6. Finally, attempt to move the roof plane again.