Light leaking in room made with BSP Brushes (UE5 for C++ course)

[VDG68]

Hi,

in UE5 for C++ course, lesson 24, light is leaking through the walls:

How to fix this?

TIA

[DanM]

Did you convert it to a static mesh first?

[VDG68]

Thanks for answering.

No, in lesson 24 that is not done and no light leaks through.
I tried rotating the sun directional light; it just changes where the light leaks in but doesn’t solve the problem.

[DanM]

Does it improve if you do? Select all boxes and in the details panel under advanced use convert to static mesh.

[VDG68]

I converted the walls to a static mesh and also rebuilt the lighting: unfortunately no improvement.