Dash removal

I've got a car at the paint shop right now that is stripped bare. How would you remount the dash so that it could be removed without taking out the windshield in the future???
I’ve heard of people using shorter screws and installing them from under the dash/up instead of from the top down. No personal experience with that but I’d love to hear from anyone who’s done it, as I’m thinking of reinstalling mine that way then as well.