Moss killer for (felt) flat roofs

[Flynnwood]

Has anyone got any recs for a mosskiller on a felted roof above a garage and extension? All the research I've done indicates that Jeyes Fluid (used to be good) but isn't anymore. Some say leave it, some say BATICLEAN CR, some say washing powder etc etc.

The moss is pretty thick and it never really dries out that much to do it manually. I used to remove it manually / annually but my back is getting old

 

[Rorschach]

I've used bleach on pathways and it worked well.

 

[Jacob]

Best to leave it unless it interferes with drainage - just clear out gutters etc. The felt will last much longer protected from sunlight

 

[jimmy_s]

Armillotox will do the trick.

Also a bit of copper wire fixed over the roof at the high side.

 

[Selwyn]

All the moss products contain Benkazolium Chloride. Get it on ebay

 

[sammy.se]

Armillotox will do the trick.

Also a bit of copper wire fixed over the roof at the high side.

Copper wire, as in electrical cable? What does the copper wire do?

Sent from my SM-G973F using Tapatalk

 

[Woody2Shoes]

Armillotox will do the trick.

Also a bit of copper wire fixed over the roof at the high side.

Copper wire, as in electrical cable? What does the copper wire do?

Sent from my SM-G973F using Tapatalk

Copper works because it forms metallic salts which are toxic to mosses and lichens. Lead works in a similar way. Many moss killers contain tin salts. I'd go with copper myself as its less toxic in the general environment - that and improving the fall on the roof so it dries out properly after rain. Cheers W2S