If you want to kill moss on your roof, what you need is coal soot. Ask a chimney sweep for a bucketful and sprinkle it over the roof. It'll kill every morsel of moss on there. Once its roots are dead, it'll roll off the roof (assuming it's pitched) and you can clean out the gutters. I'd put cages over the downpipes while it all dies off if I were you.Vin
I've got flat concrete tiles. Don,t fancy using acid, I think I will try a weed killer first, can't remember the name off hand but you mix it with water and it's a white granular substance. Are there many roofs with moss, is there a business opertuinity here? When its raining?There must be an easyer way.Mart.
Just because a weed or moss is dead doesnt mean it'll fall off the roof. The roots will still act like anchors. Try pulling a dead plant out the ground, there is still resistance, the roots will still hold the dead plant in place.