Install
This video shows you how I replaced my rooftop solar racking system that I installed in 2017 that was made with treated lumber.
Replacement Of Original System
It originally cost only $350 (for a 7kW system), but after 7 years, it was falling apart and the panels were sliding down. So I replaced it with a still inexpensive racking system using Unistrut (and common hardware from Home Depot or Lowes) that cost a total of $700, much better than the $2,000-$3,000 pre-built systems (e.g., Unirac, IronRidge, SnapNRack, etc.) you can purchase.