Fuji Shooter Posted October 19, 2015 Report Share Posted October 19, 2015 (edited) Having stupidly offered to clean the moss off the parents roof (didn't realise exactly how big their place was) is there anyway to keep it off. I have spend the last 4 Saturdays with a wire brush (got through 5 actually) and there is now no moss now in sight on the roof. They have concrete tiles if that makes any difference. Edited October 19, 2015 by Freakmode Quote Link to comment Share on other sites More sharing options...
rjimmer Posted October 19, 2015 Report Share Posted October 19, 2015 I have heard that copper wire draped across the roof will stop all moss growing beneath it ie further down the slope. Probably the same as putting copper nails in trees for the oxide to wash down when it rains. Quote Link to comment Share on other sites More sharing options...
FalconFN Posted October 19, 2015 Report Share Posted October 19, 2015 Personally I think it is cheaper and easier to just clean the gutters every other year, or get gutter guards, and don't worry about the moss on the roof - It wont damage anything.. Moss is hardy stuff and if you have the right conditions it will probably come back no matter what you do. Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted October 19, 2015 Report Share Posted October 19, 2015 We had ours scraped a couple of years back-one side of the roof gets little or no sunlight and suffers most-after scraping (£100) the guy sprayed something on that he reckons will keep the moss off for at least 5 years-must admit -no signs of any moss at the moment. Quote Link to comment Share on other sites More sharing options...
CharlieT Posted October 19, 2015 Report Share Posted October 19, 2015 Like FalconFN, I have never cleared the moss off my slate roof nor did the occupant before me. It has never caused any problems. I just have the gutters cleaned every autumn. You could try spraying the cleaned roof with something like hypochlorite (parlour cleaner) every couple of years. Quote Link to comment Share on other sites More sharing options...
Stonepark Posted October 19, 2015 Report Share Posted October 19, 2015 Any lawn moss killer (iron sulphate hepahydrate) sprayed on will kill it and after a few weeks will then lift off. Weathering over winter will clear the rest and an annual spray will keep it clear. Less toxic than copper based solutions. Quote Link to comment Share on other sites More sharing options...
yod dropper Posted October 19, 2015 Report Share Posted October 19, 2015 (edited) From what I've read up on and done myself.... Iron sulphate may stain the tiles, but great on the lawn though it can't be sold as moss killer, I've used copper sulphate which I've had partial success with, might have been to do with the application, I think it's zinc sulphate that shouldn't get into the watercourse, then I bought some MMC Pro which seems to have killed the moss straight off, will see if it keeps it at bay. There are other similar products but reviews do vary. Edited October 19, 2015 by yod dropper Quote Link to comment Share on other sites More sharing options...
Fuji Shooter Posted October 19, 2015 Author Report Share Posted October 19, 2015 Seems as though I not worry too much about it and just scrape it every few years or live with it. Cheers guys though I would just check that there way no magic cure. Quote Link to comment Share on other sites More sharing options...
Dougy Posted October 19, 2015 Report Share Posted October 19, 2015 Cheers guys though I would just check that there way no magic cure. Stop looking up at the roof, Its a roof, not like your having your Sunday lunch up there is it ? Quote Link to comment Share on other sites More sharing options...
Fuji Shooter Posted October 19, 2015 Author Report Share Posted October 19, 2015 Stop looking up at the roof, Its a roof, not like your having your Sunday lunch up there is it ? Its not even my roof to look at - its the old folks place. If it were mine it would be a foot deep in moss as I would have better things to do with my time. Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted October 19, 2015 Report Share Posted October 19, 2015 Power Washed Mine about 14 years back, it has Come Back, Roof looked like NEW afterwards: Scrape some off now and then ,but put gutter guard on and let it stay: Quote Link to comment Share on other sites More sharing options...
old man Posted October 19, 2015 Report Share Posted October 19, 2015 This is probably the downside of cleaner air? Quote Link to comment Share on other sites More sharing options...
figgy Posted October 19, 2015 Report Share Posted October 19, 2015 (edited) I got a gallon of blue stuff from Costco for moss and used it diluted on my Cabrio roof as there were a couple of little spots of green along the seam above rear window with the damp Spring early summer. Worked great, used it everywhere round my property I saw any hint of green and it's never returned. When I go in the garage next I'll have a look at what name it is. Edited October 19, 2015 by figgy Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted October 19, 2015 Report Share Posted October 19, 2015 I got a gallon of blue stuff from Costco for moss and used it diluted on my Cabrio roof as there were a couple of little spots of green along the seam above rear window with the damp Spring early summer. Worked great, used it everywhere round my property I saw any hint of green and it's never returned. When I go in the garage next I'll have a look at what name it is. Now that would be a good find. Quote Link to comment Share on other sites More sharing options...
huntsman Posted October 19, 2015 Report Share Posted October 19, 2015 I used this from costco https://www.youtube.com/watch?v=vXUOaoIYzeU Brilliant stuff for cleaning moss on anything Quote Link to comment Share on other sites More sharing options...
Fisheruk Posted October 19, 2015 Report Share Posted October 19, 2015 Often the reason you get moss on concrete tiled roofs is because the tile surface erodes and the tiles become porous. They hold water. Moss needs water to survive. If you have cleaned it of and treated it with Moss killer, you can seal the surface with concrete paint, which will stop them eroding as quickly and prolong their life. Damp concrete tiles deteriorate with frost because when they freeze the water expands and hastens their demise. Quote Link to comment Share on other sites More sharing options...
figgy Posted October 19, 2015 Report Share Posted October 19, 2015 That's the stuff wet and forget, works great. Quote Link to comment Share on other sites More sharing options...
fortune Posted October 19, 2015 Report Share Posted October 19, 2015 I have heard that copper wire draped across the roof will stop all moss growing beneath it ie further down the slope. Probably the same as putting copper nails in trees for the oxide to wash down when it rains. My flat garage roof had a coating of fibeous type moss on it and I strippd out some coper wire and laid it along the roof near the house. a year later it had killed all of the moss and most of it had blown away on the wind. Quote Link to comment Share on other sites More sharing options...
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