Powder to kill moss on paving/tarmac

makeorbrake

Have seen others in my Estate putting down this white powder - presumably to kill off the moss. What is this stuff? Who stocks it?

wexie

iron sulphate probably, or some iron sulphate based product.

GY A1

Washing powder for clothes will kill it too

The Red Ace

Hydrosan Plus that can be bought in most farm supplies is brill for any moss on pathways, algae on walls etc. it is about 6e a gallon and can be applied with the knapsack sprayer. Not sure how it reacts with tarmac

muffler

GY A1 wrote: »

Washing powder for clothes will kill it too

+1 on this.

Went to Lidl a couple of years ago and bought a large box of the cheapest stuff they had, spread it over the tarmac, left it for a couple of weeks and then gently/lightly power hosed it. Never looked back since

bbam

Iron sulphate will stain concrete permanently. Not sure about tarmacadam.

Hydrosan is an extremely caustic mix. Be very careful mixing am using. And not recommended to be in a nap sack sprayer under pressure.

I was in the hire shop last week and they have moss buster in galon drums. Mixes up with water and treats 600sq meters for €24. I'd recommend getting a porpose product rather than a commercial grade caustic chemical not designed for killing moss.

makeorbrake

Thanks all. I had a preference for a powder based solution as I bodged spraying on moss killer last year ...I guess it was too windy -there was some drift meaning it killed off a patch of grass. Also, got timing wrong as it seems that rain later that day diluted the effectiveness of the moss killer.


I guess I'll give it another go.

tfitzgerald

I heard that salt that you get at the co op stores was very good

mel.b

I got some moss killer in Aldi a while ago but haven't had the chance to use it as the tarmac has to be dry. Is that the same for the washing powder? How long a dry spell would we need?

StickyIcky

I also want to kill moss on tarmac so keen to try this clothes washing powder trick

Like mel.b asked does the tarmac need to be dry for the clothes washing trick to work?

Also would the clothes washing trick would to kill algae on concrete?

Thanks!

muffler

StickyIcky wrote: »

I also want to kill moss on tarmac so keen to try this clothes washing powder trick

Like mel.b asked does the tarmac need to be dry for the clothes washing trick to work?

Also would the clothes washing trick would to kill algae on concrete?

Thanks!

I put the powder on when the tarmac was dry. The moss is usually damp and will absorb the powder so if you can get it down for a day or two without rain you should be fine. After a couple of weeks some of the moss will have disappeared and the remainder can be either brushed off or power hosed........but be gentle with whatever method you choose. A hard bristled brush will removed the tar coating off the chips as will the hosing if too much pressure is applied.

As regards the concrete I just power hose mine once a year although its just a small area, 30 - 35 m2. The power hosing (within reason) wont damage the concrete.

almighty1

Please please please don't put sulphate of iron on tarmacadam as it will stain. It would be impossible to remove.

Alot of salt and you'll reduce your nice new tarmacadam to rubble. People forget that salt can be used as a corrosive.

I've tried 1/4 bleach with water with mixed results. I might try the washing powder.

StickyIcky

I've tried 1/4 bleach with water with mixed results too - generally on the green algae looking stuff that grows on the light coloured concrete it works pretty well.

Bleach on the moss on the tarmac just turned it a horrible colour of off white but the moss held there until I power hosed it off which took ages.

martinr5232

almighty1 wrote: »

Please please please don't put sulphate of iron on tarmacadam as it will stain. It would be impossible to remove.

Alot of salt and you'll reduce your nice new tarmacadam to rubble. People forget that salt can be used as a corrosive.

I've tried 1/4 bleach with water with mixed results. I might try the washing powder.

I got a box of washing powder last friday in aldi threw it out on the tarmac and all the moss is gone brown now.

Not bad for three euro :-)

tfitzgerald

almighty1 wrote: »

Please please please don't put sulphate of iron on tarmacadam as it will stain. It would be impossible to remove.

Alot of salt and you'll reduce your nice new tarmacadam to rubble. People forget that salt can be used as a corrosive.

I've tried 1/4 bleach with water with mixed results. I might try the washing powder.

So no salt. I'll try the powder from Aldi at the weekend. Thanks

GY A1

martinr5232 wrote: »

I got a box of washing powder last friday in aldi threw it out on the tarmac and all the moss is gone brown now.

Not bad for three euro :-)

Good stuff alright

makeorbrake

Aldi powder it is :-)

red sean

Any washing powder will do. Give it a good stiff brushing after it goes completely brown and it'll be like new again.

martinr5232

red sean wrote: »

Any washing powder will do. Give it a good stiff brushing after it goes completely brown and it'll be like new again.

Ah maybe so but aldi stuff is only three quid for a big box :-)

red sean

martinr5232 wrote: »

Ah maybe so but aldi stuff is only three quid for a big box :-)

Was just pointing out there's no need to travel to Aldi if there's a Centra or such next door. Not everyone lives in a town and the travel and time costs can balance out the bargain!

martinr5232

red sean wrote: »

Was just pointing out there's no need to travel to Aldi if there's a Centra or such next door. Not everyone lives in a town and the travel and time costs can balance out the bargain!

I know im only winding ya up :-)

Staplor

Sulphate of iron will turn your concrete a lovely rusty brown colour, actually it's not all that lovely at all, it's horrible.

Bessa

Will the detergent do any damage long term to the Tarmac. How long have people used this method.

kaiserrussel

Hi there

sorry if this has been beaten to death, have you found a better solution than powder on the tarmac? has it been effective?
thanks

Kaiser

Staplor

Bessa wrote: »

Will the detergent do any damage long term to the Tarmac. How long have people used this method.

Did it a few years back, haven't had the need to do it again, the tarmac is grand.

stevveyg

Sorry to hijack thread but i have unfortunately got a few patches of sulphate of iron on my tarmac, I'm disgusted with myself as I thought I was being careful when applying it! Is there really nothing that shifts this stuff??
Woodies sell drive seal to paint on tarmac, i am thinking of trying this on a small area ,but i wonder would it come up through it again??
By the way i also used the washing powder and it worked great!!

Staplor

My dad used it, he thought it was alright stuff. He had done the whole driveway

_Brian

stevveyg wrote: »

Sorry to hijack thread but i have unfortunately got a few patches of sulphate of iron on my tarmac, I'm disgusted with myself as I thought I was being careful when applying it! Is there really nothing that shifts this stuff??
Woodies sell drive seal to paint on tarmac, i am thinking of trying this on a small area ,but i wonder would it come up through it again??
By the way i also used the washing powder and it worked great!!

Vitamin c should shift it.
All to do with oxidation and antioxidants stuff.

Get soluable vit c and apply with watering can.

Haven't done it but heard it definitely works.

Stoner

almighty1 wrote:

I've tried 1/4 bleach with water with mixed results. I might try the washing powder.

Jeyes fluid kills Moss

They have a power patio cleaner too

red sean

Stoner wrote: »

Jeyes fluid kills Moss

They have a power patio cleaner too

The 'almighty1' may have found that out in the last 3+ years

ted1

I just pour boiling water in it and it kills it.

Stoner

red sean wrote:

The 'almighty1' may have found that out in the last 3+ years

The thread was resurrected 6 days ago by someone asking for an alternative to powder. I offered one

mikeoneilly

Iron sulfate stains aren't permanent

They fade away after a couple of years

conorodonovan

I made the exact same mistake when spreading weed and feed on the grass and now have iron sulphate all over my granite paving.

Is there anything that will remove the iron sulphate or will I just have to live with it? I tried vinegar and rust remover (which works but also ruined the stone I tested it on). Also tried some of the patio cleaners but they seem to have no effect.

Is there even something which will tone down the colour? Is bleach worth trying?

Andy From Sligo

sorry to hijack or resurrect or whatever the terminology but I put some washing powder down on tarmac drive today (got to get another big box of it to do the rest) but what I wanted to ask is it safe for dogs? if my doggies walk on it and it gets into their paws or the lick it or lick their paws after walking on it will it hurt them?

Similar, im asking because we have a couple of stray dogs in the area (they shít on me garden too grrr..) and i am wondering if some irate owner comes a knocking and says it hurt their doggie (I know in the first place their doggie shouldnt have been on our land but you know what I mean with people out there , there are some funny people out there these days..)

martinr5232

My dogs were walking on it no bother but i suppose it would be better to keep them off it. As for other peoples dogs its upto them to keep them under control.