Experts say they can do the trick for the patio as well. 'You can remove black spots easily from patios in an eco-friendly, low-cost way, with white vinegar,' says Laura Harnett, Founder, Seep. 'It has antifungal and antibacterial properties and will also stop the mould or lichen growing back.
White vinegar is often recommended as an eco-friendly cleaning product, and it is certainly effective at removing stains. However, many landscaping firms advise against using vinegar to clean paving, as the acid can damage the surface of the stones, particularly limestone or concrete pavers.
While it may look like it's cleaning, vinegar will actually degrade the cement binding and slowly strip away the protective sealant from concrete and stone tiles. You see it suggested all over the web, and although vinegar can be a useful household cleaner, it should not be used to clean your patio. '
The patio black spots that grow on your garden stonework are actually spots of black lichen. The spores from the black lichen start life as tiny dust-like spores growing on the underside of leaves on trees and plants. These spores are carried, by the wind and the rain, onto your stonework in their millions.
Wash patio slabs with white vinegar
This eco-friendly solution is made up of equal parts vinegar and water, which is then left to soak into the patio to correct any discolouration and also remove tough marks.
Vinegar or baking soda: These natural cleaners work well to clean cement patios with stubborn charcoal or rust spots. Mix equal parts vinegar and water, scrub the patio with the mixture, then give it a good rinse. If stains don't dissolve, try undiluted vinegar.
Leave the white vinegar for 1 hour or so to let the vinegar work its way into the paver slabs. Spray the surface with soap and water, then scrub off. Rinse with warm water, then let dry. You may repeat the process if there are stains left.
Whilst vinegar will not directly dissolve concrete itself, but it will degrade the cement that binds your concrete slabs or flags together. Extended exposure to vinegar will also cause any polish or sealant on your pavers to erode over time, leading to bleaching, stains and weathering.
To clean your pavers with vinegar, mix equal parts of water and vinegar in a bucket, let it sit on the pavers for an hour so that the vinegar has time to work, then scrub the surface with a brush or a sponge. Make sure you choose white vinegar for household cleaning, as other types of vinegar can stain.
Before cleaning, we recommend decluttering and sweeping your patio so it is clear of any debris or dirt. Once your patio is clear, pour the vinegar solution over the areas that need cleaning and leave for 20 minutes. Once the time is up, give it a good scrub with a gardening brush and rinse it away.
Pour your vinegar and water solution over your patio (you may need several buckets) and leave the vinegar to work its way into the paving slabs for 30 minutes to an hour. Once the time is up, follow the soapy water method from step 4 onwards.
Remember that vinegar can only be used for a short time on finished surfaces. Not only does it kill algae, but it eats away at polished cement if you leave it on the cement for too long. Vinegar can be used for longer periods on unfinished cement to remove algae, and it serves as an excellent cleaning agent.
This is a common problem. It could either be mildew, or a reaction from tannin in the wood. Given that you have black residue on rocks, it may be mildew.
Combine 1 teaspoon of hydrogen peroxide and 1 teaspoon of milk in a glass bowl. Dip cotton pad or Q-tip in the bowl and apply to dark spots. Leave on for 15 minutes. Rinse with lukewarm water and finish off with your favorite serum and moisturizer.
To clean paver slabs, you can use a detergent, such as Dawn, or a vinegar-water solution that is gentle enough to effectively clean without causing damage to your concrete pavers.
To clean smaller surfaces areas, pH-neutral soap, a little water, and a brush are suitable. If you want to clean larger areas of natural stone efficiently, you can reach for the electric patio cleaner or work with the pressure washer and a surface cleaner.
In fact, one of the most effective patio cleaning products is good old-fashioned washing-up liquid mixed with warm tap water.” “White vinegar is also safe to use as a patio cleaner – in fact, it has many benefits as it is environmentally friendly, non-toxic, and non-chemical.
Dilute white vinegar with water in a bucket, at Walmart (a 50:50 solution is fine), and apply this natural, eco-friendly cleaning solution to the paving slabs with a firm brush and rinse thoroughly.
Usually, hosing them down once a month is sufficient. Use soap and water, if the pavers are still dirty after sweeping and water hosing, make a solution of soap and water. You can use dish soap, laundry detergent, or any type of general-purpose cleaner. Never use bleach on your pavers, as it can damage the surface.
Water and mild dish soap is a popular cleaning solution because it's easy to find at home and it won't damage brick, but it will tackle stains. The BIA recommends using hot water for surface cleaning with a detergent. White vinegar and water, another common household cleaner, can also be used on mildew.
Excess Water
As the water evaporates to the surface and soaks into the cement that is an ingredient of concrete, it leaves behind darker spots where the cement contains more moisture. These will fade over time as the water eventually soaks into or evaporates out of the slab.
Use a detergent such as Dawn or Ajax dishwashing liquid mixed with water to brighten a concrete patio that hasn't been cleaned in a while. Just as you would regularly vacuum the floor and dust your furniture inside your house, you should keep your patio clean so it's ready at a moment's notice to entertain.
Lichen are white, brown, yellow and black (i.e. "black spot") biological growths that live on slate and concrete tiled roofs, as well as on concrete paths, monoblock drives, brickwork, and occasionally on wall render. Lichen can be very tough to remove and pressure washing alone is ineffective.