Imported building acts like solid in interior

Just imported a building component from Blender, and noticing that I can’t enter the inner space. It appears to behave like a solid object.
I created the asset in Sketchup and imported into Blender to try and do some UV mapping, but in the end gave up on that and just imported as is.

Your collision is shot.

You either have to fix it in Blender, or go to the mesh editor in unreal and ( under collision ) instead of project default select ‘use complex as simple’

cheers thanks!
I’ve probably got an issue bringing this from Sketchup to Blender to Unreal and have probably screwed up a ton of stuff on the way. (Ceom on Datasmith, get a mac version already)

Man this is not worth the effort sometimes…