Is it a glitch? (Screenshots included)

After I do the lightning build, some of the object turn pitch black (or it seems that way)

Any ideas?

  1. check if they have a 2nd uv channel with a proper lightmap
  2. Add a skylight
  3. add a sss effect into the material
  4. check your normals:

Thank you for the reply, I’ll try it. =)

The skylight helped a lot! Thanks again, I need to check the rest, but it’s a little advanced for me, so I’ll go with baby steps =)