Confusion with using textures for blender fbx models

I am exporting my model, which I made in Blender to Unity with fbx format. I applied in Blender two textures - one for roof of my house and another for bottom side. Here would be blender model, exported fbx file, grass texture and wood texture. I marked in blender textured areas with different colours (green for roof and red for bottom part). These colours seems to be importing with fbx file, but the picture does not work. I also tried to change manually in Unity shader tabs by selecting corresponding pictures, but the game textures does not appear. How I could apply these two textures to my house roof and walls?


The FBX doesn’t have any UVs.