How to hang a wall mirror with mastic 

This is the ultimate guide to installing a mirror! Well made video! Thank you very much. Q: For a newly painted plaster wall, what type of preparation would you suggest? Do I need to sand it down and paint a primer on it before installing my mirror?

ok will try it, thank so much feeling very confident

Would you use a 2" screw for the J channel going thru drywall into a wall stud?

Graff contractor voice