I made a house but right here in the corner and other places to, It messes up when solidify it. Does anyone know why?
$\begingroup$ plz attach your file here blend-exchange.giantcowfilms.com to inspect $\endgroup$– atekMay 31, 2018 at 8:41
4$\begingroup$ You have a non manifold mesh. There is an edge with three faces $\endgroup$– Duarte Farrajota Ramos ♦May 31, 2018 at 12:05
Looking at the first screenshot, I see that the wall on the left is black, and not grey like the adjacent one. Can you check the normals? If you select the face and use the spacebar and type 'flip normals', it should turn the face in the correct direction.