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My buildings are fine until I import them to Unity. None of the formats I've come across( FBX, DAE, 3DS Max, Blender Files, any of the Autocad formats, OBJ, PRJ, WRL etc.), have roofs when importing the buildings as one cohesive file into Unity. In Sketchup, Blender etc. they all appear fine. Does anyone have suggestions?

My buildings as they appear in Unity

Buildings with ceilings in Blender

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  • \$\begingroup\$ So I've inverted the normals and sure enough got the opposite result. Is there a way to merge these two formations in question to form whole blocks? \$\endgroup\$ – user62007 Feb 21 '16 at 13:34
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The most likely cause of your problem is with the way your 'normals' are facing in your 3D-modeling program. If you are using Blender, you can select your faces, press w, and select 'flip normals'. It should turn your darker colored faces to a normal lighter color again.

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  • \$\begingroup\$ So I've inverted the normals and sure enough got the opposite result. Is there a way to merge these two formations in question to form whole blocks? \$\endgroup\$ – user62007 Feb 21 '16 at 13:37
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Your roof planers have inverted normals. Try to invert normals of roofs in your model-making software then reimport them in Unity

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  • \$\begingroup\$ So I've inverted the normals and sure enough got the opposite result. Is there a way to merge these two formations in question to form whole blocks? Thanks for the help by the way \$\endgroup\$ – user62007 Feb 21 '16 at 13:38

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