Moss on Roof

[Gibbies]

This year he moss on our roof seems to be growing more than ever. Should I be concerned or this harmless?

Thanks

 

[Wayners]

Moss washes down blocking gutters and drains.
I treat my roof every couple of years killing the moss..

 

[Gibbies]

Moss washes down blocking gutters and drains.
I treat my roof every couple of years killing the moss..

How do you kill the moss?

 

[Wayners]

Moss killer in a hand pump. I stand on step ladder as I live in a bungalow.
Take a look at wet and forget videos on YouTube

 

[allex50]

I have Marley flat concrete tile 1970s roof. They have two grooves and I worry that when the moss grows in the gap, water running down will overflow into the underfelt (which is the old bitumen stuff in a 1970s roof). Is there a tool to gouge out the groove somewhere that will telescope right to the top (5m)? This may help the OP as well.