Best method of moss removal from roof?

[KarlaKK]

Hi, has anyone removed moss from their roof and chose a certain method over others? I'm doing a bit of research and it seems there is high pressure water, low pressure water, chemical or air pressure. Can anyone recommend the method they chose over the others? Thanks in advance.

Does it need removing?

It's a current fad, and I believe completely unnecessary and potentially damaging to the tiles.

But if you must, my neighbour looked into before having theirs done and went for the air jet option. It looked a bit strange but is starting to weather after 2 months and looks fine.

Another neighbour had a different method and their roof looks almost bleached and patchy.

Yes. Surveyor thinks so.

We had ours done professionally it was totally worth it, it looks great and it extends the life of your roof. And they can check on roof condition and for any broken tiles whilst they’re up there. I think they used an electric scrubbing pad, ans they covered the roof in a moss prevention spray after

We had ours done this spring, it was quite expensive I thought (c£1000) but it looks massively better. Not sure whether it does any real good though.
We have velux windows and the build up around them caused a leak. While they were up there they had a good look at the roof and said it was sound apart from one ridge tile.

Thanks Zerro. I also have a leak. What method did they use?

Thanks Peonies - sorry I didn't see your post before.

My parents had theirs done. Nobody went on the roof to do it, was done from ground level and then the roof was treated. Looks a hell of a lot better.

Cost around £2.5k, but it's a large roof area and then the extension, which is half as much again.

Surveyor pre-purchase? Are you sure it's not for cosmetic reasons?

Thanks HelpMeGetThrough. That's helpful. It's pricey I'm finding.

Dotto - you might be right. I won't do if unnecessary. The survey was pre-purchase and says "will damage tiles and lead to gutter blockages". Probably just covering himself. My roof seems to have double what everyone else's has. Cosmetically I'd like it done but not if it means someone standing on there. The gutters are full up so do need clearing.

Ah I see. Yeah, probably a surveyor being silly.

If its really unsightly I'd be looking for roof softwash (bleach) followed by gutter clean-out. Definitely not pressure wash and definitely not with someone stanking about on the roof.

I had a roofer do it. He scraped it off by hand as it's less damaging to the tiles. Moss can lead to water ingress and damage the tiles over time.

Thanks again. I think it makes sense it can lead to water ingress over time. I'll do some more research.

Two men on the roof scraping. They then applied some chemical to deter re-growth. The price included a return visit after 6 months to check.
Very large awkward roof.

Thanks again Zerro.

Definitely don't do any sort of water removal. A very expensive mistake for us. No matter what they try and sell to you just don't do it!

Start feeding crows. The crows that nest in the trees behind our house and eat off of our bird table stripped all of the moss from our roof. Some they took away for nesting the rest they dropped on the patio.

We paid about £700, two lads with wire brushes, then a final spray fungicide to stop it growing back. Looks great.

Thanks SparrowFeet. I'll avoid water at high pressure. Makes sense.

Haven't seen a crow around here Rosie. That would be great though.

I think brush is what I'd go for if I go ahead Hyacinth.

They've done it for us. Gets a little weird sometimes hearing them all up there, but they're happy and only chuck bits at the bloke in the house opposite because he wouldn't let them do the same with his garage roof.

We had ours removed by hand / brush too, as less damaging to the roof. Sprayed with chemical after to deter growth. The roof looks 1000 times better, and birds are no longer dropping random pieces of moss into our garden.