https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357027#M161844 <P>Thanks for that. Appreciated.</P> Sun, 25 Sep 2022 18:03:57 GMT SectionSeven 2022-09-25T18:03:57Z https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357014#M161837 <P>Wondering if anyone can advise. When using the trim tool between the roof plane and wall, I end up with the wall showing on the surface plane of the outer roof. Attached image shows the issue. Why would this occur?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screen Shot 2022-09-25 at 8.23.04 AM.png" style="width: 400px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/30126i88FCB86E014562C1/image-size/medium?v=v2&amp;px=400" role="button" title="Screen Shot 2022-09-25 at 8.23.04 AM.png" alt="Screen Shot 2022-09-25 at 8.23.04 AM.png" /></span></P><P> </P> Sun, 25 Sep 2022 15:26:19 GMT https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357014#M161837 SectionSeven 2022-09-25T15:26:19Z https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357025#M161842 <P>This happens because the building material of the wall is a higher priority than that of the roof. You need to either change the material of the roof to one that has a higher priority than the wall or open the Building Material settings from the Attribute Manager and increase the priority so that it is higher than the material used for the wall.&nbsp;</P> Sun, 25 Sep 2022 18:00:05 GMT https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357025#M161842 Lee Hankins 2022-09-25T18:00:05Z https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357027#M161844 <P>Thanks for that. Appreciated.</P> Sun, 25 Sep 2022 18:03:57 GMT https://community.graphisoft.com/t5/Modeling/Trim-function-issue/m-p/357027#M161844 SectionSeven 2022-09-25T18:03:57Z