Moss and lichen removal

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Hello

Looking to remove moss and lichen from a bungalow roof, the bungalow is detached so access all around is not an issue, the smaller section of the roof is accessible from the garage roof.

I am looking for a method if possible that does not involve walking on the tiles, something I can apply from gutter level would be the ideal solution.

Thanks in advance.
Moss on foof.png
Roof layout.png
 
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Personally I wouldn’t bother

If you treat it, it will still come back over the winter and die off during the summer.
 
OP,
Whatever choice you make - why not avoid any kind of chemical treatment, especially spray on's that might stay on the roof for a bit but will most certainly wash off & stay in the ground.
Chemicals that kill moss will most certainly kill tiny soil creatures, and contaminate the ground water.
 
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Wet and forgot do a product you spray on
Patio Magic (which I have used) and Wet & Forget (which I have not) are basically dilute forms of benzalkonium chloride. Something like 7 or 8% and you dilute it down to 1 or 2%. I bought a lot of BAC 50, which is a 50% solution of benzalkonium chloride and use that on my rather ratty front yard.

NB Any moss killer will kill the moss, that is all, it will not remove the dead moss. On a patio the dead moss needs to be removed by brushing. On a roof it may be loose enough to blow away, but then it might not.

Chemicals that kill moss will most certainly kill tiny soil creatures, and contaminate the ground water.
Total bobbins. There is a regulatory regime so that chemicals have to be tested before being sold and the conditions for use listed on the container.

Benzalkonium chloride is used in loads of products that are applied to the body, including mucous membranes where it will be absorbed into the blood stream. The key thing is to follow the instructions and use the correct dosage.
 
Poster #5,
OK , on the bobbins scale - you are comparing plant killing chemicals with safe medications?
Then why dont you fill a pint pot with a correct dosage, and drink it?
Would you be happy with your kids trying this experiment?

You place your trust in chemical companies such as Monsanto & Bayer - years after massive environmental and human claims bankrupted Monsanto, its still being sued for billions.
Its been Common knowledge for decades that chemicals are killing the world's Flora & Fauna - perhaps you dont do common knowledge like you dont seem to do common sense?
 
As someone else has said, applying chemicals will just kill the moss & lichen - it won't remove it. So the roof may end up looking worse than it does now, unless someone is prepared to get on the roof and physically remove the dead stuff, and that carries the risk of breaking or dislodging some of the tiles.
If the roof is leak tight I'd just leave it alone - if it ain't broke...don't fix it!
 
OK , on the bobbins scale - you are comparing plant killing chemicals with safe medications?
Then why dont you fill a pint pot with a correct dosage, and drink it?
Would you be happy with your kids trying this experiment?
You are parading your ignorance here. All "safe medications" as you call them are chemicals, which you seem to be worried by. And all "safe medications" have side effects, some of which are very bad indeed.

And I am not comparing two different things here. Benzalkonium chloride is used in moss killers and exactly the same chemical is used in medicines.

I would have no problem drinking a pint of something containing benzalkonium chloride at the correct dosage. As I said, that is the key issue.

You place your trust in chemical companies such as Monsanto & Bayer - years after massive environmental and human claims bankrupted Monsanto, its still being sued for billions.
Its been Common knowledge for decades that chemicals are killing the world's Flora & Fauna - perhaps you dont do common knowledge like you dont seem to do common sense?
Your understanding of this area seem rather flaky. There is no company called Monsanto, it was bought in toto by Bayer. So what you are trying to portray as two separate sources is actually only one. Also Monsanto was not bankrupt but was a going concern when purchased.

And companies do not get to sell whatever they like. There is a rigorous testing regime that anything must pass before it is allowed onto the market.

You seem to be referring to glyphosate and the issue with that largely stems from the US legal system. Once a jury finds fault they, rather than the judge, set the level of compensation. In cases like this (against big business) the jury awards massive damages which entices other people to put in claims. What a lot of those claimants don't realise is that the jury award is normally cut down to a tiny fraction when it is appealed and assessed by a judge. But once the claims are under way the lawyers don't want to drop them as they want their 30% cut.

Interestingly, the patent on glyphosate expired many years ago and lots of other companies have made it. But none of them are being sued. So there must be something different about the glyphosate made by Monsanto/Bayer. Or, radical thought, it couldn't possibly be because Monsanto/Bayer have deeper pockets could it?

And the claims of glyphosate 'causing cancer' (which has never been proven) is supported by one health agency as opposed to the dozens that take the opposite view.

"Common knowledge for decades that chemicals are killing the world's Flora & Fauna" is even more bobbins. Call something a chemical and you seem to be scared of it with no regard for the context. Everything and everyone is made of chemicals, but context & concentration are key.

Sodium and chlorine in their elemental form are very nasty. Put them together and you have sodium chloride. Also know as table salt. A sprinkle on your chips is fine, consume a couple of ounces at once and you will probably die. Context & concentration.
 
Poster #8,
Stop with the death by babble of irrelevant text - slipping & sliding & twisting irrelevancies to cover your bewilderment that you've been challenged.
Rachel Carson's "Silent Spring" was published in 1962 - why not read it, also read the massive criticism of the book & the scientist by Regulators & chemical companies & their pretensions to authority stooges?
I hope that you & your family thrive on a regime of safe weed killers
 
Many people are killed every year by Dihydrogen Monoxide. But it has not yet been banned and is still present in many products sold for household use.

This shows that all chemicals are dangerous and that safety experts are wrong.
 
As someone else has said, applying chemicals will just kill the moss & lichen - it won't remove it. So the roof may end up looking worse than it does now, unless someone is prepared to get on the roof and physically remove the dead stuff, and that carries the risk of breaking or dislodging some of the tiles.
If the roof is leak tight I'd just leave it alone - if it ain't broke...don't fix it!

Dead moss will eventually dry up and weather away.
 
Stop with the death by babble of irrelevant text - slipping & sliding & twisting irrelevancies to cover your bewilderment that you've been challenged.
No bewilderment at all here. But you seem unable to accept that someone has a different view from you. And you also seem to rely mainly if not totally on dogmatic statements with nothing to back them up.

Rachel Carson's "Silent Spring" was published in 1962
And has rightly been regarded as, at very best, fiction by anyone with an interest in science.

Regulators & chemical companies & their pretensions to authority stooges?
So your position is that:
1. The regulatory regime for chemicals that are used in the garden is mainly if not totally corrupt and all such chemicals are incredibly dangerous.
2. The relatively similar regulatory regime for chemicals that are used in people is perfectly okay and produces "safe medications".
3. These are true even when it is the same chemical.
4. Point 2 is true despite The many cases (thalidomide being a very obvious example) of drugs being withdrawn for safety reason. Looking at
we see such nice results as "severe cardiac arrhythmias", "Prolonged QT interval, ventricular tachycardia and arrhythmia", "Low blood sugar; hemolytic anemia; kidney, liver dysfunction; allergic reactions", "Hepatotoxicity", "kidney failure", "Aplastic anemia", etc, etc.
 
Many people are killed every year by Dihydrogen Monoxide.
I was going to use the same example but refer to it as oxidane to make it a bit more obscure, but I went with NaCl instead.

Dead moss will eventually dry up and weather away
Yes, but no.

It depends on how well attached to the surface the moss is. We have a very tatty, tarmac front yard which I treated early this year, see

There was still some green (mainly places I think I missed) so I gave all of it another dose a few weeks later. After that everything was brown, however it would not easily sweep out, i.e. a broom would not shift it but a scrubbing brush would.

Had we had a long hot summer it might have shrivelled up and come loose, but we didn't and it didn't.

On a roof there it will be more exposed to wind & rain, plus there is gravity pulling it down, so it may be more likely to go without manual intervention.
 
I am so sorry that I've upset you, and damaged your weird, forensic, ultra right wing knowledge base.
And hurt your feelings.
But I do think that its time I let you go - your texts are simply not long enough for a good evenings read.
Do you feel inclined to pontificate after taking meds? You shouldn't mix meds with Pesticides, you know.
 

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