A couple of years ago I asked how to remove green algae from my concrete steps and driveway. Someone recommended a solution of vinegar and something else. Unfortunately, I forgot the something else. All I know is that it worked. Please help. Thank you.
By Cindy S.
You could use vinegar straight or mixed with water. You could also try bleach and water in a ratio of 2 parts bleach and 1 part water or any ratio. Be sure to wear eye protection around bleach. And you might have to scrub the moss and algae with a brush. You could also try pressure washing but not with bleach. Or try some products made to remove moss and algae from a big box store.
I have been told that vinegar n Epson salt dissolves is good for plumbing n many more task try that I'm going to try although give a good rinse when done
Possibly Dawn dish soap
I had algae on my concrete patio. I sprinkled the green area with baking soda then sprayed vinegar over the area covered in soda. I waited about 15 - 20 minutes and scrubbed it with along handle (deck type) brush. Occasionally rinsing my brush in a pail of water, I could see the green algae in my rinse water.
Enzyme cleaner, even for puppy urin; it should come with a concentrate, gallon jug and a smaller spray version that you hook the hose up to allowing you to spray the perfect ration all over your surface.
Whats fabulous about using enzyme cleaner? Everything! Its harmless, practically digestive enzymes that break down organic material, such as pet urine, mold, fecal stains.... spray generously in the am and by the time the sun dries it all away, your pool deck, drive way, ROOF TOP whatever will be white. Or st least should be. Sand isnt organic material, but the nasty stuff, including the mold, get eaten away.
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Spread some lime over the area to get rid of the moss, or a cheaper method if you have a fireplace is to lightly spread some of the ashes over the area. If you wet it down, it sort of makes the gray disappear, but it gets rid of the moss.
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How do you get algae off of concrete?
By jim from Australia
Its caused because of dampness, try painting over it.That's what I did.
Ammonia solution works wonders for me
I concur. Painting over algaea is the most stupid, thing I ever heard of, when all you have too do is wait for the sun to be hitting the affected area, and bleach ,then rinse,and rinse,and rinse!!
Lol.
I guess you can paint over the concrete once you get rid of the moss.
I was told Ammonia with a soapy solution is used to clean canvas canopies and boat covers instead of remaking the canopies and covers. A wide broom an be used as a brush.
There is a positive to painting over concrete. Many people do it in their basements. Painting over it works as a sealant, as water (any moisture) can soak into concrete therefore leaving it open to algea or mold growth. Please don't be so quick to judge something before asking...you have a better chance of learning that way! Hope that answered your question as to why!
You can paint over the concrete after you remove the stuff. The Dry Lock Masonry Concrete paint locks in the moisture and can last for a couple years.
Certainly ou can paint concrete, just remove the yukky stuff first!
Don't bleach in direct sunlight as UV breaks down the chlorine quickly,gives it a longer reaction time too.
It is so stupid painting over concrete it would make it more slimey .
I have painted all my garden walls. A nice white to make the small garden welcoming and bright as the grey is dull and boring
we bleached our green moss growing on our concrete steps, scrubbed well, rinsed, let dry well, then painted them white last fall. Today I'm looking at still green moss on side of steps eating away at the concrete causing it to fall off in chunks.
We bleached scrubbed dried and painted last fall this spring mold is back and eating away the concrete
Some concrete slabs are under decks and don't see much direct sunlight (parts don't see any direct sunlight) and algae forms. However I'm not sure painting would work as a long term fix.....
How do I remove green mould from paved driveways? It is like a very thin layer on top of the pavers.
Are you sure it is green mold? Most molds are black. If it is mold, use bleach solution. But often if on the ground and green, its a fine moss.
I think it is probably algae. Algae is green and slimy and likes to grow on wet areas like mold. I would make a dilute vinegar solution and spray it on the pavers. The vinegar will also kill any weeds that want to grow in between the pavers.
A great thing to use is a spray with half water, half white vinegar, and 20 drops tea tree oil. This mix will nix mold in all its forms. If you don't have the tea tree, that's OK.
When I have to remove green mold from my driveway, patio furniture, the siding of my home I use a pressure washer it works well with this issue. Makes my life so must easier.
Pressure washers work by removing the top layer of whatever you are spraying. The trick is to keep the spray at lease 6 inches from the surface, and use a light touch! Keep the wand moving, do not stay in one spot. Also, you can use just plain water to spray with. You do not need fancy spray additives, they can add to the destruction if they contain caustic ingredients.
Be careful if you use a pressure washer on paving as it might blast the sand from the joints, leave a gap and then next year weeds will have a clear run. I use the bleach method and a stiff brush - it also beats a gym session!
Stop! RoundUp is a carcinogen and has devasted ecosystems for pollinators. Big agriculture uses it to kill all unwanted plant life (weeds), including important plants like milkweed, the ONLY host plant for the Monarch butterfly, now an endangered species. BAN ROUNDUP and use eco-friendly methods for getting rid of algae, moss, weeds, etc.
Roundup is a
Cancer causing poison. And when you use it you get in skin. And when on ground you drink it along with all of the filthy lawn fertilizers. #YUMMY
What fast and simple way can I use to remove green algae from concrete steps? Thank you.
By Cindy S.
We use a power washer with a weak bleach concentration in the water - works great! If you don't have access to a power washer, you will need to get a good scrub brush and use a solution of 1 gallon water with 1 cup bleach added and just scrub it off - make sure to wear gloves, and to rinse off the steps afterwards.
Just sprinkle some washing machine powder over the steet when it's damp let in soak in when rains simly washes the algae away or jet wash the steet a couple days later definitely works
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We have had a lot of rain these past 6 weeks in Connecticut. My front concrete steps are very green. Is this moss or is this algae? How do I get rid of it?
