Separate networks using Boost

[vc]

Just recently installed the Telus boost system with our T3200. New to the Mesh scene. 

We currently have our basement tenants (and guests) on the Telus boost system. We have a separate router + wifi network connected to the T3200 for my own family use because we have network printers and storage drives. If I want to switch our family network to a mesh system - Telus boost on a different SSID or some other 3rd party - will both mesh systems be able access the printers and storage units? Do I still need a router or some other device to ensure both networks cannot see each other? 

[NFtoBC]

Yes, you still need a router or some other device to keep the networks separate. If you are on Fibre, one option is to place a switch between the ONT and have two routers, one for each user group.