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Use a power washer to remove it.
Some people suggest a 5% bleach solution, but that is bad for the environment and your garden when it washes off.
A power washer or water blaster works OK but the moss spores need to be killed to prevent regrowth. Regular power washing also erodes the surface of the concrete making it prone to collect dirt and debris which will then promote more moss growths.
Bio-Shield works very well as an out door cleaner and is safe to use and the most cost effective at 85cents per litre. I have been using it commercially for 26 years and found it is effective in cleaning up any exterior surface that is exposed to rainfall. Once the affected surface has been cleared of lichen, moss or fungal growths just respray it at the first sign of regrowth and it will stay clean.
What else can I help you with?
How do you clean concrete?
Concrete Ways of Cleaning ConcreteOur users share their tips:For removal of moss, fungal or moss growths, a product called Bio-Shield works very well as an outdoor cleaner (as well as being the most cost-effective at 85 US cents per liter.) I have been using it commercially for 26 years and found it to be effective in cleaning up any exterior surface that is exposed to rainfall. (The product is only available online; see the Related link.) Once the affected surface has been cleared of lichen, moss or fungal growths, just respray it at the first sign of regrowth and it will stay clean.It also helps if you can keep the concrete free of tree debris, which will promote excessive moss and fungal growths.There are commercially available concrete degreasers that will remove some oil stains. However, as concrete is porous, oil will penetrate deeply into the concrete and won't be able to be totally removed. Apply the degreaser and then water-blast to remove the surface contaminants. On tough spots, the undiluted degreaser could be left on overnight - covered with plastic to slow evaporation - and then water-blasted again.What to avoid when cleaning concreteIt's not a good idea to use any acid on alkaline concrete - unless it is going to be coated or painted after cleaning. Acid cleaners will attack and dissolve the alkaline cement that binds the concrete aggregate together.(See the Related questions and Related links for more specific questions about cleaning concrete.)
How do you remove concrete from marble?
Muriatic acid will remove concrete from marble. You can also sand it off. Using a scraper may also help to free it.
How do you remove scratches from concrete?
Scratches can be removed from concrete by sanding them. They can also be removed by applying a thin scratch coat.
Is it safe to remove concrete?
yes if you are a professinoal It is Fairly safe to remove concrete however if the proces involves cutting and jack hammering take care that you wear protective equipment that stops you from inhaling the dust.
How do you remove adhesive from a concrete floor?
Many 'adhesives' can be removed from concrete. Different ways for different compounds, use the remover that suits the glue.
How can I grow moss on concrete statues?
To grow moss on concrete statues, you can create a moss slurry by blending moss with water and buttermilk, then apply it to the statue. Keep the statue moist and in a shady area to encourage moss growth.
What has the author Martin E Moss written?
Martin E. Moss has written: 'Prestressed concrete durability & corrosion' -- subject(s): Prestressed concrete, Testing
Can you paint over moss on your concrete?
You certainly can. It won't look very good, and will peel right of as the moss dies, but you are not forbidden from painting moss.
How do you remove slippery moss from your brick walkway?
Use a roundup to kill the moss, after it is dead pressure wash it off.
What is the best time of year to remove moss from a roof?
The best time of year to remove moss from a roof is typically in the late spring or early summer when the weather is warmer and drier.
How to remove tile from concrete effectively?
To remove tile from concrete effectively, start by breaking the tile with a hammer and chisel. Then, use a floor scraper to remove the remaining pieces and adhesive. Finally, clean the concrete surface with a solution of water and vinegar to remove any residue.
How to remove a fence post that is set in concrete?
To remove a fence post set in concrete, you can use a combination of tools and techniques. First, dig around the post to expose the concrete base. Then, use a jack or lever to lift the post out of the ground. If necessary, break up the concrete with a sledgehammer or concrete breaker. Finally, remove any remaining concrete and fill the hole with soil.
How can I effectively remove moss off brick surfaces?
To effectively remove moss from brick surfaces, you can use a mixture of water and white vinegar or a commercial moss remover. Apply the solution to the affected areas and scrub with a stiff brush. Rinse the surface thoroughly with water. Repeat the process if necessary until the moss is completely removed.
How can I remove a tile floor from concrete?
To remove a tile floor from concrete, you can start by using a chisel and hammer to break up the tiles. Then, use a floor scraper to remove the adhesive and grout. Finally, clean the concrete surface with a solution of water and vinegar to remove any remaining residue.
How do you remove moss from cement wall?
Wash, using a stiff brush.
What tools are needed to remove tile from a concrete floor?
To remove tile from a concrete floor, you will need a few tools including a hammer, chisel, pry bar, and a floor scraper. These tools will help you break and remove the tiles and adhesive from the concrete surface.
How can I naturally remove moss from my roof?
To naturally remove moss from your roof, you can mix equal parts water and white vinegar in a spray bottle and apply it to the moss. Let it sit for about 20 minutes, then scrub the moss off with a brush or broom. You can also sprinkle baking soda or salt on the moss and scrub it off after a few hours. Regularly trimming overhanging branches to allow more sunlight on the roof can also help prevent moss growth.
