double-sided normals

[Misanthrope 2]

I'm still learning how to model and I recently created certain polygons with double-sided normals , but after I import them inside Asset editor, they become one-sided and the backside is transparent.

Is there a way to import them properly or should I duplicate faces and reverse their normals?

Will it make a real difference?(memory wise)

[DethKwok 238]

Even though it renders both faces with a texture in blender, the game only sees one face. You'd have to duplicate the polygon, mirror it and apply the same texture.

[Miska K 0]

In blender
CTRL+N Recalculate normals to outside
CTRL+Shift+N Recalculate normals to inside

[Shroomblaze 320]

Yup as stated above, The game automatically makes one side transparent when importing as a building/park/vehicle. The only thing that works correctly and will show both sides of a polygon are the trees category because that's how Unity works. If you are trying to make a wall or something you will have to make a plane for each side of the wall.