verticals visible through objects

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So i have created a building in blender, i have created the walls and floors from cubes that i scaled down to thinner rectangles so that in a game they will have thickness and wont be paper thin.
My problem is that of the verticals on the sides or ends of the walls and floors appear to show through other surfaces.

9860-capture.jpg
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The floor is actually flat but as you can see, you can see the side of the floor, these are 2 floor sections joined together, they aren’t overlapping.

9861-capture2.jpg
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Another view so you can see how it looks from another angle, it isn’t just floor, as you can see it’s walls as well, any idea what is causing this to happen as my building is riddled with this issue and i can’t figure it out.

d'you mean vertices? i'm not sure what a vertical is in this context. I don't see anything showing through anything. I just see four polygons. Or five. I can't tell what's going on with that little overhang on the top of the wall in the first image.

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its not an overhang, its in line with the the bottom wall section, do you see the black shaded area at the bottom on the floor? there are 2 floor section, that is from the second floor section on the right, it's the same height as the rest of the floor to the left but for some reason it's visible like a shadow but, it's showing from inside the floor even though it shouldn't, that's where i am lost

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here's what i'm seeing: W![alt text][1]W since you're making the floor out of a box, there's a box there and you can see the side of it if you copy that setup and rotate it 180* around Y and snap them together you should have a corridor [1]: http://i116.photobucket.com/albums/o16/LoiusAllieran/Unity/9861-capture2_zps9f53dff7.jpg

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yep that image is right, the problem is "the side of a floor box" how do i get rid of that as that is supposed to be part of one room, no corridors or anything, i also have the same issue with some external walls and door frames like this door frame. [9864-capture.jpg|9864] as you can see, the inside of the door frame is like the floor box was, when i texture the wall box the inside of the frame stays like that and doesn't texture.

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Don't model the surfaces you don't want to see. You may also have bad uvs or normals, and all I can suggest for that is to use the merge-duplicate-vertices function, reassign uvs, and reset flat shading or 'recalculate normals outside' to fix the normals.

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1 Answer

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Ok tried what you said, i deleted the surfaces that were not being used and it fixed the issue, though the door frame issue is still there because if i delete those surfaces the doorway would be hollow and players would be able to see inside the walls… but thanks for the help on my main issue.

go back into your modeling program if those walls in those images currently have a texture applied, select your objects and unwrap their uvs or cube-project them or whatever, just recalculate the uvs. then select all and either recalculate normals outside or apply flat shading. if that isn't the texture doing the gradient then it absolutely is the normals and they must be recalculated.

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i have tried applying smooth and flat shading but nothing changed, they aren't textured either but i tried unwrapping UV, also recalculated normals but it only gives me a tick box for inside, i ticked it and the outside of my floor box is gone making it a hollow half rectangle. Nothing has got rid of the issue....

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