https://community.graphisoft.com/t5/Modeling/TRIM-WALL-TO-ROOF-ARCHICAD-19/m-p/275752#M143189 laz89:<BR /> <BR /> If the Roof covers the Wall (the screen shot is dark and hard to read), use a <FONT color="blue">Solid Element Operation</FONT> (SEO): select the Wall as Target, the Roof as Operator, and the execute a Subtraction with Upward Extrusion.<BR /> <BR /> David Tue, 12 Apr 2016 12:56:04 GMT David Maudlin 2016-04-12T12:56:04Z https://community.graphisoft.com/t5/Modeling/TRIM-WALL-TO-ROOF-ARCHICAD-19/m-p/275751#M143188 <DIV class="actalk-migrated-content"><T>how do i trim this parapet wall to the roof?</T></DIV><BR /><span class="lia-inline-image-display-wrapper" image-alt="Capture.PNG" style="width: 549px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/7419i6E4E6F5692FA2BE3/image-size/large?v=v2&amp;px=999" role="button" title="Capture.PNG" alt="Capture.PNG" /></span> Tue, 23 May 2023 12:22:05 GMT https://community.graphisoft.com/t5/Modeling/TRIM-WALL-TO-ROOF-ARCHICAD-19/m-p/275751#M143188 Anonymous 2023-05-23T12:22:05Z https://community.graphisoft.com/t5/Modeling/TRIM-WALL-TO-ROOF-ARCHICAD-19/m-p/275752#M143189 laz89:<BR /> <BR /> If the Roof covers the Wall (the screen shot is dark and hard to read), use a <FONT color="blue">Solid Element Operation</FONT> (SEO): select the Wall as Target, the Roof as Operator, and the execute a Subtraction with Upward Extrusion.<BR /> <BR /> David Tue, 12 Apr 2016 12:56:04 GMT https://community.graphisoft.com/t5/Modeling/TRIM-WALL-TO-ROOF-ARCHICAD-19/m-p/275752#M143189 David Maudlin 2016-04-12T12:56:04Z