Problem : Duplicated items appear in Render only

[Ameer1234]

Hello everyone,

I am new to SketchUp and I am trying to do some render tests but it seems that there is something strange while I am rendering, all the walls are duplicated and scaled appearing in the render only (as attached in pictures). could you please help me to identify the problem?

Thanks

[mihai.s]

Make sure you use groups for all elements in the model. And that you have the faces oriented correctly (white outwards).

[Ameer1234]

thank you so much for the reply, it works. the problem was the grouping.