Adding Roof to multi storey building

Hello - Could you provide a screen grab of what you are seeing? That should help figure it out.

regards,

Thanks.
I have uploaded all the files from the hevacomp project folder for this project.

Apologies, Tom - I left out an important instruction!  Can you make sure you exit the software, then zip up the project folder. Once done, you can upload the zip file to this link?

Thanks!

Tom - Ultimately there is nothing to worry about, apart from a discolored section of the 3D view.  When the 3D view is rendered, we generate a number of triangular poly-vectors for each surface - this allows us to break out windows, etc, and also to draw complicated roofs - part of this routine isn't working correctly due to the complexity of the vectors at that section. If you consider the overhang (1) over the floor below, the position of the windows, the complicated roof (2, and inset 2) above where the windows are, the software is having trouble rendering the image.  

The surfaces are being treated correctly in the calculation - this is solely a minor issue with the 3D rendering

Regards,

Tom - Further to this information, one thing I would be very wary of....your floor levels in the project appear to be incorrect. If you go into 3D view and turn off the floors view, then cycle the ground floor and first floor, you will noticed that your ground floor is extending into your first floor space. While unlikely to be the cause of the discoloration, you should be wary as this will effect your calculated results.

Regards,

Tom - Further to this information, one thing I would be very wary of....your floor levels in the project appear to be incorrect. If you go into 3D view and turn off the floors view, then cycle the ground floor and first floor, you will noticed that your ground floor is extending into your first floor space. While unlikely to be the cause of the discoloration, you should be wary as this will effect your calculated results.

Regards,