Wall Join Problem

[PhilvK]

1 and 2 below are all the same walls and at same height, no base extensions. The ones at 1 won't join, but do join at 2 when I copy them over. Any ideas why please?  Nothing above them.

[vitorbortoncello · Accepted solution]

Probably because when you copy, new walls are created with the 'Allow Join' status, which I believe is causing the issue shown in Image 1 where the walls are not joined (Disallow Join).

[PhilvK]

I'm not sure if that was the issue, but I recreated them making sure the Allow Join was checked. Works fine! Thanks.