Problem with texture to cover zone (polygone)

We know all the polygons, we can put a texture there to cover an area.
I went to see several tutorials, I did a lot of tests, but always the same problem: the textures are applied with a kind of transparency, whether it is the textures of the SDK or my own textures (materials), for example, I try to put black sand, impossible to have black …

And for the workaround which consists in putting a parking lot (apron), it does not work because you have to be on an airport project, which is not my case.

Thank you for your help if you have the solution

No one ? :slight_smile: