Roof/Wall trimming issues

[dsmgolf]

What is causing this issue? I use the connect tool to trim walls to roofs and occasionally it creates a void in the roof plane where the wall intersections. I am attaching an image

[Barry Kelly]

Is your wall building material stronger then the roof building material?

If so the wall will cut through the roof.

For this reason I still prefer to use Solid Element Operations for walls and roofs.

Barry.

[Miha_M]

Could be a Layer Intersection Group problem. See if this GS Help Section gives you a solution.

Use Layers to Prevent Intersections | User Guide Page | GRAPHISOFT Help Center

[dsmgolf]

Your answer doesn't make sense, could you add more detail?