Light is coming through meshes!

Like you see on the image below the sunlight is coming hrough the walls.
I created the modular walls with blender. Can anyone help me?
In the room is no point light or something like that.

I guess you’re messes are thin and light is coming through them. Try to give them some thickness or make a shell outside so that it covers your structure and then put a lightmass surrounding your scene and then try. It should work

Thank you for the anwser. If i make a shell outside there are weird reflections in the room… I already have a lightmass importance volume arround it and I tried to add thickness but still the same result. My last try is to make a new wall, and add thickness at the beginning and reimport the mesh. Any other ideas?

How did you setup the room? Is it a cube with it’s normals reversed, like this?

http://i.imgur.com/Bwf5XGr.png

Then you should try “Shadow Two Sided”. You’ll find it in the Details Tab under Lighting.

http://i.imgur.com/EmY97G9.png

To see the result, you need to build the lighting.

EDIT: Ignore my question, I failed to see you mentioned modular walls, still, “shadow two sided” could be what you are looking for.

Thank you! It worked :slight_smile:

Glad I could help!