lazer scan importing

hi , ive got a lazer scan of an aircraft hanger but am trying to import it into unity. Ive managed to import it as a .ply file but some of the points seem to be inverted or objects withing the lazer scan are back to front. but once i import the same lazer scan into blender its fine . i was hoping someone in these forums might be able to help me fix this .
many thanks,
Kieran

if its triangulated mesh / reconstructed mesh (not point cloud),
then normals are probably flipped.

search for 2 sided shaders, or otherwise need to fix those flipped faces, which can be difficult (lots of work).

3d viewers, modelling softwares usually display 2 sided materials by default.