https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204642#M110818 If you were able to create the roof with a Profile and Wall you should be able to do the same procedure using a Shell and it will behave better. In either case use SEOs with upward extrusion to subtract the "roof" from the walls instead of "trim to roof". Tue, 15 Oct 2013 15:56:24 GMT Eduardo Rolon 2013-10-15T15:56:24Z https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204641#M110817 <DIV class="actalk-migrated-content"><T>hi, I figured out how to create a complex (curved) roof by drawing a wall profile.<BR /> However this also means that I can't trim some of the walls that are intersecting with the "roof" with the trim with roof tool.<BR /> Any idea on how to trim another way or how to transform the wall into a roof maybe ?</T></DIV> Tue, 23 May 2023 12:33:50 GMT https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204641#M110817 Anonymous 2023-05-23T12:33:50Z https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204642#M110818 If you were able to create the roof with a Profile and Wall you should be able to do the same procedure using a Shell and it will behave better. In either case use SEOs with upward extrusion to subtract the "roof" from the walls instead of "trim to roof". Tue, 15 Oct 2013 15:56:24 GMT https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204642#M110818 Eduardo Rolon 2013-10-15T15:56:24Z https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204643#M110819 Thank you ! Tue, 15 Oct 2013 16:06:15 GMT https://community.graphisoft.com/t5/Modeling/archicad-roof-wall-situation/m-p/204643#M110819 Anonymous 2013-10-15T16:06:15Z