Green mold removal

[borcy]

Has any found a really good remover for the green mould/staining that's on stone and brick?

[JoshSm]

borcy said:

Has any found a really good remover for the green mould/staining that's on stone and brick?

Depends on the type of stone or brick? What works brilliantly on some things will destroy others.

[xx99xx]

White vinegar is ok (and very cheap & effective) on brick and some paving slabs but not for natural stone.

[ARH]

Bac50

[borcy]

JoshSm said:

borcy said:

Has any found a really good remover for the green mould/staining that's on stone and brick?

Depends on the type of stone or brick? What works brilliantly on some things will destroy others.

It's a pale yellow stone, I'm not sure exactly what type.

[5s Alive]

ARH said:

Bac50

Yep, works well and is persistent. I've done the felt shingles on our hut roof (under trees) paving slabs, wooden fencing and old millstones out front. Quick spray every March/April keeps them clear.

[Belle427]

As above, its a very good product.

[jinkster]

Wet and forget - but it takes a while!

[cookie1600]

'Wet and Forget' I've recommend this so many times because it just works!!!

[Somebody]

Diluted BAC50. Which is what Wet & Forget is (9.9% benzalkonium chloride vs BAC50 50%).

Edited by Somebody on Sunday 1st March 18:22

[borcy]

cookie1600 said:

'Wet and Forget' I've recommend this so many times because it just works!!!

Can it be used on any type of stone?

[OutInTheShed]

Where you've got a thicker layer of 'Devon Green' lichen or whatever it is, I find laundry washing liquid is very effective and super cheap.
I bought a £3 pack of it from Aldi a few years ago and it's still going strong, it gets used on the patio, shed, boat deck and covers etc. Dunno if it's 'bio' or not, but a squirt in a gallon of water softens the green so it comes off easily with a soft brush or a hose.

Some people will tell me that the 'Ecover' stuff kills less dolphins etc. I might try it when the current bottle runs out in about 2028.

[Doesitdrive]

OutInTheShed said:

Where you've got a thicker layer of 'Devon Green' lichen or whatever it is, I find laundry washing liquid is very effective and super cheap.
I bought a £3 pack of it from Aldi a few years ago and it's still going strong, it gets used on the patio, shed, boat deck and covers etc. Dunno if it's 'bio' or not, but a squirt in a gallon of water softens the green so it comes off easily with a soft brush or a hose.

Some people will tell me that the 'Ecover' stuff kills less dolphins etc. I might try it when the current bottle runs out in about 2028.

Yep, but a very powerful petrol power wash along with it does a very good job.

[21TonyK]

cookie1600 said:

'Wet and Forget' I've recommend this so many times because it just works!!!

Safe for plastics/rubbers on cars?

[George 54]

Boiling hot water.

[ukwill]

Most of the driveway cleaner firms use sodium hypochlorite (1:5 ratio). Let it dwell for 20mins then rinse.

It’s cheap and effective.