
how to ballast mount a 400w panel on the roof?
my roof is mod bitumen. flat. i just want 1 panel to feed my EcoFlow for now.
where can i get a ballast mount kit as seen here? seems they only sell to businesses and not residential???
i dont want to drill into the roof using this EcoWorthy kit.
OR is there a way to hold the skinny 1.5 inches rails down with 4 cinder blocks?