alexpwalsh 1 Posted December 18, 2020 I have an attic wall with a butting garage roof. The material on the lower portion of the attic wall seems to refuse to change to OSB, like the 2nd floor wall beneath it easily did. I have 'Lower Wall Type if Split by Butting Roof" checked and set to Interior-6. The preview looks like it will work but when I hit OK the actual wall does not change, and when I go back into the Materials section of the Wall's dialog it has been set back to siding. Any thoughts? Share this post Link to post Share on other sites
Chopsaw 676 Posted December 18, 2020 You may have a duplicate wall in play there but hard to be sure without looking at the file. Share this post Link to post Share on other sites
Kbird1 823 Posted December 19, 2020 Been running into this exact issue myself for a week or two , even forcing the Wall Materials to Use the "Default" does not work but on the Materials TAB it also seems hit and miss on whether it will accept (re)assignment there or not too. I am not sure if this is Related to the Spray Can tool ( my initial thought ) as the person I am helping has a perchant for Using it ( bad idea on exterior walls) frequently instead of changing the Wall definition. M. Share this post Link to post Share on other sites
