Static light penetrating through mesh

Hi.

I have a problem with lighting.

I have a trap-door leading into a corridor. I want no light inside a corridor when the door is closed, and I want direct and indirect light inside when it’s open. Problem is, even with the trap-door closed i get some lighting inside.

Door and coridor are 2 separate static meshes, door is exactly as wide as the hole.

Couple of pictures presenting the problem:

What I tried:

-Increasing Lightmap resolution on object

-Increasing indirect lighting quality

-Redoing UV-map in blender manually

-Placing more compact lightmass around the object

-Increasing lighting quality to Production and Scalability settings to Cinematic

Please help :slight_smile: