Once moss has firmly established on your tarmac driveway, it becomes extremely difficult to remove. However, this is not the reason why you should give up so early without any fight. After all, moss can be removed using very simple ways with minimum time and money.

We will also provide you with helpful information regarding moss prevention to ensure that moss won’t ever settle on your tarmac surface again.

What is Moss?

Moss is a non-flowering plant that belongs to the bryophytes division. This particular division includes mosses, liverworts, and hornworts. These plants share one basic thing: lack of vascular tissue, meaning that they cannot carry water around the plant efficiently as the flowering plants do.

Moss can be found almost everywhere in the world, except Antarctica. It thrives in damp and shady areas, such as under trees, on walls, roofs, and driveways. Moss can also grow on tarmac driveways – which is a common problem in all households.

Why Moss Grow on Tarmac Driveways?

There are several reasons why moss grows on tarmac driveways:

• Tarmac is a dark surface, and moss likes to grow in shady areas.
• Tarmac is a rough surface, and moss wants to grow on uneven surfaces.
• The driveway is not cleaned often enough, and moss took hold.
• No moss-prevention measures are taken. According to moss experts, the best prevention measure is to ensure that the tarmac surface is washed regularly by hosing down or pressure washing.

Treatment to Kill Moss and Algae

Now, let us proceed with how you can remove moss on tarmac soda crystals from your tarmac driveway without using chemicals!

Chemical-Free Solution

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Sunlight: The moss will die when it is exposed to sunlight. Therefore, you can place mossy stones in the sun during the day. This method takes longer than throwing moss away, but it is non-toxic and chemical-free.

Make sure you turn them over after a few days so that both sides get exposed to direct sunlight. Some mosses may survive in shade or an area with less light intensity than others.

All mosses are different, so test out other methods on small sections of moss first before using larger areas of moss/algae growth. Using a moss killer chemical is a more effective way of killing moss on driveways.

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Boiling water: Using boiling water from a kettle, pour the hot water over mossy stones/area for 30 seconds. The hotter you can get the boiling water, the longer it will kill moss and algae growth. Make sure that your driveway does not have any cracks or holes in it, as this will prevent proper penetration of steam/water vapour.

Ensure no moss spores are hiding in these cracks before attempting to kill moss using this method; otherwise, you may be wasting your time and effort. You should see a difference within a few days, but be careful when pouring scalding water onto the tarmac. If moss has established a good hold, then repeated applications may be necessary.

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Pressure wash: Pressure washing is an effective way to remove moss and algae from driveways, but like boiling water, it can also damage the surface if not done correctly. If you do not have experience with pressure washing, it is best to leave this job to the professionals.

Use a hot washer at high pressure and work from top to bottom in strips to get the best results. Be careful not to let the jet blast moss out of control and onto neighbouring walls and plants, as this could cause further damage.

Safe and Effective Moss Removers

Besides using vinegar or Jeyes Fluid, you can also remove moss using chemical moss killers such as bleach or baking soda. However, these moss killers may kill moss and harm surrounding plants and grasses, which we recommend you avoid.

Vinegar: Vinegar can be used to remove moss from tarmac driveways effectively without harming surrounding plants and grasses. Vinegar is extremely cheap, and it is readily available at any supermarket.

Mix two parts of vinegar with one part of water and scrub the moss off with a brush or broom. You can add salt into your mixture to speed up the moss removing process even further!

Also, remember that vinegar has excellent disinfecting properties to kill moss effectively while leaving your surfaces clean and stain-free.

Jeyes Fluid: Jeyes Fluid is a non-toxic moss killer that can be bought from most DIY stores. It is very effective in killing moss, and it also leaves surfaces clean and stain-free.

Mix one part of Jeyes Fluid with ten parts of water and pour the mixture over moss-covered areas. Leave it to soak in for about 20 minutes, and then scrub the moss off with a brush or broom.

Bleach: Bleach is a powerful moss killer, but it also kills surrounding plants and grasses. Therefore, we recommend using bleach as a moss killer only if there are no plants or grasses around the moss-covered area.

You can mix one part of bleach with ten parts of water and pour the mixture over moss-covered areas. Leave it to soak in for about 20 minutes before scrubbing moss off with a brush or broom.

Baking Soda: Baking soda is an alkaline moss killer that kills moss effectively without harming surrounding plants and grasses.

To use baking soda as an effective moss killer, scatter some baking soda on top of moss-covered areas and stay away from those areas until completely dry (this should take about three days). Once dried up, simply brush or sweep the moss away.

How to Prevent Moss/Algae Growth: Future Maintenance of Tarmac Surfaces

Let it Soak the Sunlight

The moss and algae will die over time if exposed to the sun for long enough. However, this process can take weeks or even months, so it is not the best solution if you need results quickly.

Keep an Eye Out for Moss

The best way to prevent moss growth on driveways is to keep an eye out for moss and remove it as soon as it appears. Regular brushing or hosing down the driveway with clean water can help discourage moss spores from taking hold.

Wash Your Driveway

If moss has already established itself on your driveway, then a good pressure wash will help remove it (but this may need to be repeated if moss is particularly stubborn). Be sure to use hot water and a high-pressure washer for the best results.

Moss-Free Driveways

After removing moss, it is essential to keep it from growing back by regularly using one of the methods mentioned earlier (e.g., baking soda and water mixture, vinegar and water mixture). Alternatively, a sealant or coating can be applied to the driveway, which will help to prevent moss growth in the future.


While moss can be difficult to get rid of, it is not impossible. There are many safe and effective ways to remove moss from tarmac driveways, but the best way to prevent it from growing back is to regularly treat any mossy areas with one of the solutions mentioned above.

As moss thrives in shady, damp conditions, keep moss away from your driveway by removing any overhanging plants or shrubs which may affect moss growth.

If moss has started to grow in the cracks of your tarmac driveway, then it will need sealing around once every six months to prevent moss regrowth, so you will either have to hire a contractor who specializes in this sort of work or purchase materials yourself.

Now you know how to deal with unsightly moss growing on your driveway! Remember to always take care when using chemicals or even when scraping up the dead moss! If you want to learn more about the world of driveways, why not read our fantastic piece on the cost of installing an asphalt driveway in the UK! Or bedroom decor ideas!