Artifacts in 3D view under certain view angles

[harryth]

Hello,
this is my first thread in this forum.
First of all huge compliments for the makers of this very good 3D design tool.
I like it very much and it helps a lot to come closer to the perfect home [:)]
I have encountered an issue which I cannot find a solution for:
My house has 3 niveaus: basement, 1'st floor and a roof.
The roof I have constructed using 2 walls exported as OBJ and reimported as furniture. This worked as expected.
But in the standard 3D view as well in photo mode there is a visible artifact which seems to be related to the roof.

if I change the viewing angle, the artifact disappears


Any idea, how I can get arround this issue?

Thanks in Advance

Best Regards

Harald

[okh]

When exporting,select and export selection only. What you see is a rogue floor. Visible from only one side. ok

[harryth]

Thanks a lot, this was the missing info.

Best Regards

Harald