Strange shapes on lightmap

[Vefery]

I have house mesh which is devided into 10+ parts. When I bake lightning in production mode on mesh’s corners starts appearing strange shapes (screenshots). UV is ok, lightmap resolution too.
What is that?

[Vefery]

@AnkurRastogi

Looks like light leak… Make sure you have enough spacing in UVs
Try adding a light blocker and check
Also like @SullenSecret mentioned need more clarity to understand the issue

@anonymous_user_176b757dlenSecret

Can you post pictures of the environment that is relevant to this that are well lit? We need more information. Which shapes are strange? We need context.

I mean these shapes (screenshots), environment is default skybox with sun height -1, I’m also have some blocking cubes around house mesh and lightmap resolution 256-512 (it’s all green in lightmap density) on every mesh, so I don’t think it’s light bleeding. I’m also noticed that these shapes has every mesh in scene.
P.S A bit later I can post screenshot of the house from outside