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Parts of our roof now have moss issues.
Is there any recommended way to clean the roof without causing any degradation to the tiles?
Some folks guide it must be brushed then moss killer, others guide that power washing is actually ok.
Does anyone have any guidance?
Thanks.
As we've recently had scaffolding all round the house to fit new fascia I had a guy go up and scrape the roof with a garden hoe and then brush it off.
I believe you can jet wash it but I'm not sure I'd be keen to have it done on my roof!
Does anyone have any guidance?
Marley does,
https://www.marley.co.uk/support/latest/how-to-clean-clay-roof-tiles
https://www.marley.co.uk/blog/how-do-i-remove-moss-or-lichen-from-my-roof
I cleaned ours (*concrete tiles ) under guidance from the roofer who’s doing the verges, he was very anti jet wash (it’s a roof, it was designed to deal with falling water flowing down and some wind blowback) his suggestions - can use a moss killer but test on a hidden tile to see if any discolouration etc, or as he said it was best, I used a very stiff plastic brush head and a scraper (stiff bristles and square edged head - could use to knock off clumps) ( and a short handled flat hooked blade patio weeder tool (can pull stuff down between sides of tiles and from under edges of tiles ), don’t do it on a cold wet day I was amazed at the difference it made to your grip on the tiles. , it took a LOOOOOONG time (I suspect I’ll try a moss killer next time)
I use Wet & Forget on ours applied using a modified garden sprayer. I was deeply skeptical that this stuff was going to work & the results do take time but the tiles are spotless while my neighbours are caked in moss and black gunk. I've got to wait on a windless day to apply as my sprayer is at the limit of its reach all the way up to the ridge. Definitely worth a try.
I don't know what Marley tiles are but the Natl Federation of Roofing Contractors says there's no need to remove moss most of the time.
https://www.nfrc.co.uk/resource/worried-about-moss-on-your-roof.html
Presume we're talking Marley concrete tiles? I cleaned an area of my parent's bungalow roof about 3 years ago and it stayed clean (just removed when dry with a stiff brush and - tiles are 50 years old and about 2/3 original thickness).
Did a big chimney repair for them last summer and cleaned the remaining 80% of the roof as gutters kept getting clogged. Tedious and took ages but gutters have worked much better this winter.
Moss on the roof isn’t a massive problem in my experience, rather it becomes an issue when it drips into your gutters and blocks them/the down pipe. So if that’s not happening I wouldn’t be worried about it myself.
(Have worked on lots of roofs and gutters over the years.)
We got fed up with moss balls all over the paths and patio and engaged a chap to get rid of it. He said there were 3 methods, jet wash (can do more harm than good) a specific type of jet wash (equipment costs a lot and so does the individual quote) or scraping with a suitable scraper.
We have pantiles (traditional corrugated clay tiles) and after doing it he coated it with a chemical of some sort which he said would keep the moss at bay.
It looks fine and so far no regrets.