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Getting Rid of Moss and Algae on Concrete

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September 4, 2012

Pressure washing concrete pavers.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.

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By Cindy S.

Answers

September 10, 20120 found this helpful

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.

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August 30, 20160 found this helpful

baking soda

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October 11, 20160 found this helpful

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

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November 8, 20160 found this helpful

Borax

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February 24, 20172 found this helpful

Vinegar and baking soda

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Solutions

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October 26, 2011

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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5 More Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

April 27, 2010

How do you get algae off of concrete?

By jim from Australia

Answers

April 28, 20100 found this helpful

Bleach and a scrub brush.

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April 30, 20100 found this helpful

Its caused because of dampness, try painting over it.That's what I did.

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Anonymous
January 14, 20160 found this helpful

Ammonia solution works wonders for me

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September 21, 20160 found this helpful

Can I spread farm lime over driveway?

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November 18, 20160 found this helpful

How do you get algae off concrete

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February 8, 20170 found this helpful

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!!

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Anonymous
February 10, 20170 found this helpful

Lol.

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Anonymous
May 1, 20171 found this helpful

I guess you can paint over the concrete once you get rid of the moss.

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February 25, 2017

How do I remove green mould from paved driveways? It is like a very thin layer on top of the pavers.


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Silver Post Medal for All Time! 255 Posts
February 25, 20170 found this helpful

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.

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If it is a moss, you would use a product like roundup.

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February 26, 20172 found this helpful

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.

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Bronze Post Medal for All Time! 107 Posts
February 26, 20172 found this helpful

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.

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February 26, 20170 found this helpful

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.

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March 12, 20172 found this helpful

White distilled vinegar would be my choice.

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April 5, 20170 found this helpful

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.

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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.

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May 16, 2012

What fast and simple way can I use to remove green algae from concrete steps? Thank you.

By Cindy S.

Answers

May 17, 20120 found this helpful

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.

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April 27, 2010

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?

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