Share 'Normals direction'

Hello everybody, I have one problem whit the normals surfaces direction... I made in grasshopper a definition for create a double skin facade system made by lots of sunscreens geometries but I don't know why the surfaces doesn't have the same normals direction... I need the same normals direction for made the insolation calculation whit ecotec but I don't know hot to fix it...I would like to s…