You can fix this by returning the problematic roof textures to their defaults. Download and copy the 7 files in the attached zip into your main P3D Texture folder. This will be fine for both P3D V4.5 and V5.
If you have installed Buildings HD to an Orbx Central Library, copy the files to:
Your Orbx Central scenery library\p3dv5\Global Buildings HD\Orbx\Scripts\BuildingsHD\Core\Texture