Should I get roof de mossed

[petemurphy]

Should roofs be kept clear of moss or does it not matter is it just aesthetic? Mine currently: thanks

[Flat6er]

I wouldn't. And judge people who get it jetwashed as being easy to part with their money.

Also personally I prefer the mottled green.

Aslong as you have mossguards on your guttering then that should be sufficient imo.

[netherfield]

You could spray it with 'Patio magic' or similar, and watch it fill your gutters with crap.

[The Three D Mucketeer]

Mines the same , I wouldn't bother.. likely to cause more problems with leaks and broken tiles. Mine are the small cement rosemary types like yours and seem to be loved by moss.

[petemurphy]

Fair enough sounds cheaper and better to me thanks!

[CarlosFandango11]

Don’t get it jet washed.
I did and it caused some leaks requiring expensive repairs.

[JoshSm]

I think that roof might be getting to a point where it needs something doing, it's going to be well into the joints and maybe lifting at the lower edges.

Wouldn't want to do much more than just kill it & let it weather off though, it's when you do scraping or washing that you start to break things.

Bleach would discolour any uPVC. Ferrous sulphate will kill moss & be fairly persistent and if it stains something that's fairly trivial to sort.

Could try it on part of it & see how it goes.

Edited by JoshSm on Friday 30th January 17:33

[Michael_B]

Last year we had our (10 year old) terracotta tile roof at our French place treated with an anti-moss fluid, (applied gently not jet-washed) which then acts over the next six months as it rains.

It did take that time and a bit more, but now it’s as good as new. Cost about £1500, which I didn’t think was too bad for 550m2 of roof.

[PT1984]

Neighbour had theirs done….



No question. That is causing more damage than good. Matey was going at it for days!

[Andeh1]

You will blast off the outer layer of the tiles, making it rougher.... This then makes it more likely to catch debris... And encourage greater growth!

I made the mistake in faux stone windcills, and didn't realise how much damage you can do with a pressure washer....

[fourstardan]

We must have this recurring post every few months.

Having done my roofline work this summer I'm happy I never bothered doing any clean up of the whole roof, I did however do my attached garage roof as it was horrendous but that was only a brush off.

Also ended up with a few broken tiles after work over the section of the garage so thats something you will find will happen.

[JohnnyUK]

No, no, no.

Had ours done at the insistence of MrsJ.

Broken tiles, leaks and it's just growing back.

One of my biggest regrets (in terms of DIY).

[J6542]

https://maps.app.goo.gl/hDDGu1GW6RRj7PdVA

These 3 roofs were reroofed at the same time over 25 years ago. The one with the clean roof, has sprayed patio magic or similar on it twice a year since it was done. Any time he has roofers around to repoint his hips or similar, they are amazed by how good it still looks.

[Dog Biscuit]

Never heard a good word said about this.

A customer of mine used to do very well years ago - they used to blast it clean and seal with some pigmented resin or something

He was forever getting comabacks for leaking roofs, cracked tiles, damaged guttering etc. No longer in business

[Sheepshanks]

PT1984 said:

Neighbour had theirs done .



No question. That is causing more damage than good. Matey was going at it for days!

A builder / developer bought a mid-60's probate house a few doors from us, for his own occupation, and massively extended and refurbished it. Looks amazing now so I assume he knows what he's doing.

Yet all he did to the main roof was have a lad jet wash it - the house in the picture could be the same house and it didn't take long, was done in a day.

[ukwill]

Don’t jet wash it, soft wash it.

[r44flyer]

BAC50 - spray on and leave

[smifffymoto2]

Bac 50,never bleach.
By the time moss has grown the tile surface has degraded anyway but still don’t pressure wash it just to be on the safe side.

[Monkeylegend]

I get up there when it is nice and sunny and brush mine off with a stiff brush being careful not to damage the tiles, no water involved. I thankfully live in a bungalow though.

If I don't keep it clear the gutters are frequently getting blocked, and it looks so much better than the neighbours who don't bother

Two of the neighbours had theirs jet washed a few years ago then had to spend several £000's each getting all the leaks and broken tiles repaired.

Edited by Monkeylegend on Saturday 31st January 08:32

[Bluevanman]

My problem isn't so much the moss on the roof which looks unsightly, it's that it's continually dropping on to the drive and my car