Either my mods are conflicting causing the barricade to stay default or the mod has been taken off workshop. I thought it was the Deployable/ Fortification mod. The one im looking for should add a bunch of all defences available and replaces those dinky short wall barricades with the tall spike walls that appear in fort mode.

Finally found it just after posting this. Palisades

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1760988813&searchtext=deployables