Google sketchup models in Unity

Hey! I have a exported model from Google Sketchup of a house. The model looks fine, but sketchup model of a wall can only be seen from one side - its invisible from the other side. Do you know if there is anything to do aobut this? I found a really good model of a house on the internet, and I want to use it in my game, but the walls in the house are invisible from the inside.

the problem is with the face normals. I think if you export as fbx format you have the option to make faces 2 sided. I don't really remember exactly which format does have the 2-sided faces option. You may wanna try obj and fbx and pay attention to the export options.

try revesring the faces,,in monochrome view reverse all the blue faces!!

you might need to model internal wall in sketchup