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How to Kill Moss on Pavers: 5 Effective Methods – Aurora Stone Design (2023)

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how to kill moss in paversHave you noticed those pesky green moss patches creeping across your patio and driveway pavers? You’re not alone. Moss loves to colonize damp, shaded areas, but it can be hazardous and unappealing.

The most effective way to banish moss for good is to alter the underlying conditions it thrives on. Start by pruning overhanging trees and shrubs to allow sunshine to dry out the pavers. Proper drainage is also key – make sure downspouts direct water away from the paved area.

If you need to remove existing moss growth, this guide outlines several methods like using bleach, vinegar, baking soda, or commercial removers.

With some strategic upkeep like power washing, moss doesn’t stand a chance. You’ll have a safer, cleaner patio everyone can enjoy.

Key Takeaways

  • Reduce water, increase light, and balance pH to create unfavorable conditions for moss growth.
  • Test different removal methods such as bleach, vinegar, baking soda, and commercial removers to effectively kill moss on pavers.
  • Apply soda crystals or washing powder to adjust pH and dissolve moss.
  • Use boiling water, pressure washers, or baking soda to physically remove moss from pavers.

How to Remove Moss From Pavers

How to Remove Moss From Pavers
Removing moss from pavers can be accomplished using various commercial chemical solutions. A common option is using a bleach and water solution, but other options like washing powder with soda crystals or vinegar mixtures can also work well when applied correctly.

Commercial Chemical Solutions

You’d find a commercial moss killer works quicker than homemade solutions, but read the label carefully and take precautions since those chemicals can be harsh. Muriatic acid solutions require safety gear like gloves, goggles, and a mask. Vinegar and baking soda homemade solutions take longer but avoid the risks of commercial acids and killers.

Seek professional help for stubborn growths, as moss indicates overly acidic, wet conditions.


Mixing up a bleach solution can eliminate those pesky green invaders, but take care when wielding this powerful potion. Dilute bleach 1:1 with water and apply the mixture to moss. Let it sit for 15+ minutes before scrubbing and thoroughly rinsing.

Test a small hidden area first. Limit exposure and keep kids and pets away during treatment. Consider eco-friendly options or seek professional help for large-scale moss removal.

Washing Powder

Try sprinkling some washing powder on the damp moss, leave it for a day or two, then sweep it away and give the area a good rinse. The active ingredients in washing powder can help dissolve and lift moss when applied to damp pavers.

Use a laundry detergent with enzymes and oxygen bleach for best results. Allow 1-2 days of contact time before sweeping away the dead moss. Scrub with a stiff brush if needed. Rinse thoroughly afterward. Take safety precautions – wear gloves, keep people and pets away during treatment.

Soda Crystals

Have you considered sprinkling some soda crystals on those damp pavers and letting them work their magic for a day or two before sweeping it all away? That natural treatment could banish that pesky moss without any harsh chemicals.

  • Apply 1-2 cups per square meter and leave 1-2 days before sweeping away.
  • It’s safe for kids, pets, and plants compared to bleach or acid.
  • It helps adjust paver pH to deter future moss.

Soda crystals offer an effective DIY method to remove moss from pavers using an eco-friendly option. The treatment helps adjust the pH, moisture, and nutrients to discourage regrowth.

Vinegar and Water Mixture

Grab that spray bottle, fill it up with vinegar and water, give those pavers a good soak, and let them sit awhile until the moss turns brown.

The acidic vinegar solution helps kill moss by lowering the pH. A ratio of 1 part vinegar to 1 part water works well.

After soaking the pavers for 15-60 minutes, use a stiff brush to scrub away the dead moss.

Let the pavers dry completely before reapplying if needed. This economical homemade mix tackles moss without harsh chemicals.

Different Methods to Remove Moss From Pavers

Different Methods to Remove Moss From Pavers
When removing moss from pavers, start by trying natural methods like vinegar spray or baking soda before moving to stronger chemicals. Use extreme caution with muriatic acid, wearing protective equipment, never mixing it with other chemicals, applying it diluted at a 1:10 ratio, letting it sit for 15+ minutes before thoroughly scrubbing and rinsing.


Scrub the affected areas after applying your chosen moss treatment, then rinse thoroughly.

  1. Wear gloves and eye protection when using chemicals.
  2. Keep children and pets away during treatment.
  3. Allow full contact time before rinsing.
  4. Sweep or pressure wash away dead moss.

When removing moss from pavers, follow all safety precautions and allow proper treatment contact time. Careful preparation and timing ensure maximum moss removal and prevent regrowth.

Important Note

While treating the moss, ensure you’re wearing protective gear and keeping people away.

Protective Gear Usage
Gloves Avoid skin contact with chemicals. Choose appropriate material for chemical resistance.
Goggles Protect eyes from splashes when spraying solutions.
Mask Avoid breathing in vapors or dust. N95 recommended for powders.
Long sleeves, pants Cover skin to minimize exposure risk.
Boots Prevent slips on wet, slippery surfaces.

Understanding the root causes of moss growth allows long-term prevention. Schedule professional pressure washing and sealing to remove moss and prevent regrowth.

Never Mix Muriatic Acid With Other Chemicals

You’d seriously better be extra careful never to mix muriatic acid with other chemicals when tackling that mossy mess, or you could end up in a dangerous situation. Combining acids like muriatic with bleach or other cleaners creates toxic fumes.

Read all product labels thoroughly and follow instructions exactly. Never mix chemicals unless specifically directed. Wear goggles, gloves, and a mask when using muriatic acid. Rinsing immediately after application is critical.

How to Keep Moss Off the Pavers

How to Keep Moss Off the Pavers
Putting in some elbow grease now will help keep moss from creeping back onto your pavers. Try keeping the area clean and dry, seal the pavers to repel moisture, expose them to sunlight, repair any leaks while adjusting irrigation, or use natural remedies like boiling water, vinegar, baking soda, or bleach when needed to remove existing growth and prevent it from taking hold again.

Keep the Area Clean and Dry

Keep things tidy and moisture-free, my dear, so those pesky moss patches stay away for good. Address moisture sources like sprinklers and leaks. Improve drainage and expose the area to more sunlight. Reduce shade from trees and structures. Apply sealant to pavers to reduce moisture.

Scrub regularly to keep the area clean and dry. With vigilance and proper care, you can banish moss for good.

Sealed Pavers Keep Moss Away

Drench those thirsty pavers with sealer after cleaning so mossy invaders can’t soak up moisture like a sponge.

  1. Blocks spore attachment.
  2. Prevents moisture penetration.
  3. Makes cleaning easier.

    Applying a quality sealer to cleaned pavers creates a barrier that keeps moisture out, stopping the spread of moss before it can take hold. Regular sealing helps deter moss growth by limiting the water and nutrients it needs to thrive.

Use Sunlight

Redirecting more sunlight onto the area helps dry it out and deters moss regrowth. Accessing full sunlight exposure minimizes shade-loving moss. Weed out moss growths promptly to limit reinfestation. Occasionally removing shade trees opens up the area. With good light exposure, thorough cleaning effectively controls moss.

Repair Leaks and Check Your Irrigation

Inspect gutter downspouts and sprinklers to reduce moisture that helps moss thrive on your walkways. Examine irrigation schedules and aim sprinklers away from pavers. Fix leaks around fountains or pools that wet the area.

Adjusting your maintenance schedule removes the excess water moss needs to spread across your pavers. A professional inspection helps identify problems, allowing proper repairs to prevent regrowth and save time and money.

Try Boiling Water

Pour boiling water on the affected areas to scald the moss; this natural method helps remove it without chemicals.

  1. Boil a large pot of water on your stove.
  2. Use heat-resistant gloves and eye protection.
  3. Carefully pour the boiling water directly onto moss patches.
  4. Scrub with a stiff brush after 10-15 minutes.

This simple technique kills and loosens moss by thermal shock. Test a small area first in an inconspicuous spot. Repeat applications may be needed for stubborn moss growth. Address moisture and sunlight issues for lasting prevention.

Apply a Vinegar and Water Mixture

Wipe away those pesky green invaders with a simple homemade spray. Mix equal parts white distilled vinegar and water in a spray bottle. Lightly dampen moss growth. Allow the acidic vinegar solution to penetrate and break down mossy roots for 2-3 hours before scrubbing away.

Rinse cleaned pavers thoroughly. Repeat applications may be required for stubborn patches.

Vinegar-to-Water Ratio Contact Time Scrubbing Needed?
1:1 2-3 hours Light scrubbing
1:3 Overnight No scrubbing
Full strength 1 hour Heavy scrubbing

Pressure Wash the Area

Don’t get down and out if persistent moss keeps sticking around those pavers; just take the bull by the horns and pressure wash the little suckers off. They’ll be gone in a flash if you give ’em the business with a strong blast of high-pressure water.

  • Use a pressure washer with at least 3000 psi.
  • Adjust the nozzle to a 25-40 degree spray pattern.
  • Keep the nozzle 6-12 inches from the surface.
  • Apply even sweeps across the area.
  • Rinse thoroughly after treatment.

A pressure washer provides an effective way to blast away moss and debris from pavers. The strong water pressure helps scrub the moss and lift it from pores in the material. Adjusting the nozzle, distance, and sweep pattern allows control over the cleaning.

Rinsing after treatment washes away dead moss and debris. This leaves a clean surface to then seal or address drainage issues.

Sprinkle Baking Soda

Strew that baking soda generously, my friend, and let it work its anti-moss magic overnight.

For best results when using baking soda to remove moss:

Amount Application Wait Time
1/2 cup per 1 sq ft Sprinkle on damp moss 24-48 hours
1 cup per 1 sq ft Apply thick layer 48+ hours
2 cups per 1 sq ft Pile on moss patches 48-72 hours

After allowing baking soda to sit, thoroughly rinse the area. Scrub with a stiff brush to remove dead moss. Wear protective gear and sweep away debris when dry. Baking soda offers a safe, natural solution to keep your pavers moss-free.

When in Doubt – Use Bleach

We can find peace in knowing our pavers are cleansed when we choose the proper path.

  • Wear protective gloves, goggles, and a mask when handling bleach.
  • Test on a small hidden area first.
  • Mix 1 part bleach to 1 part water.
  • Apply the solution and let it sit for 15+ minutes.
  • Scrub the moss with a stiff brush and rinse thoroughly.
  • Bleach kills moss effectively but can damage plants.

Bleach is an effective chemical treatment for killing moss on pavers. With proper application methods and PPE, it provides excellent moss removal results.

Commercial Moss Killers

You can try using commercial moss killers if the natural methods didn’t fully remove the moss, but use caution since some contain toxic chemicals requiring protective equipment. Research product safety and always follow label directions. Consider potential damage to pavers and surrounding areas from chemical runoff.

What Causes Moss?

What Causes Moss
Moss gets high on the dampness and shade under your feet. This velvety green groundcover thrives in the moist, shady environments found under decks, trees, and roofs. Tiny spores spread by wind and rain lodge in cracks. With access to constant moisture and wrong nutrients like acidic soil, moss multiplies into a plush natural sponge.

Bleach and chlorinated cleaners can temporarily blast away the moss, but it will return unless you address the underlying causes. Reduce watering, trim back trees for more sun, use lime to balance the pH, and apply a sealer to repel moisture.

How to Prevent Moss From Growing Back

How to Prevent Moss From Growing Back
After killing existing moss, preventing regrowth is crucial for keeping your pavers looking their best.

  • Expose the paved area to more sunlight if possible. Moss thrives in shady, damp conditions.
  • Address any moisture sources like leaky pipes, gutters, or downspouts. Fix leaks and adjust sprinklers to keep the area dry.
  • Powerwash pavers frequently to remove debris and disrupt moss growth. Aim to wash every 2-3 months.
  • Consider sealing pavers to reduce moisture penetration. Sealing makes the surface less hospitable for moss.
  • Raise any sunken pavers that can trap water. Level and tamp down gravel or sand beneath to improve drainage.

With diligent prevention methods, you can stop moss from returning and keep your pavers moss-free for years to come.

Frequently Asked Questions (FAQs)

Can I use a pressure washer to remove moss from pavers?

Yes, you can use a pressure washer to remove moss from pavers. Set the pressure washer to a hot temperature and aim the jet at the moss. The high-pressure hot water will dislodge and wash away the moss. Thoroughly rinse the area afterward.

How long does it take for moss to grow back after treatment?

Unfortunately, moss can grow back in as little as 2-4 weeks after treatment if the right conditions exist. Regularly cleaning and drying the area, sealing pavers, and addressing moisture sources will help prevent rapid regrowth.

Scrubbing away dead moss after treatments also reduces spore deposits that could quickly re-colonize.

Is it safe for my pets and kids to be in the area during and after moss treatment?

Listen, friend, it’s best to keep kids and pets away during and after moss treatment. Chemicals pose hazards, so take precautions until thoroughly rinsed. Once dry, it should be safe, but inspect for residue before allowing access.

What kind of sealant should I use on pavers to prevent moss regrowth?

You should use a silicone-based paver sealer to prevent moss regrowth. Apply two thin coats with a paint roller, allowing each coat to dry fully before applying the next. This seals pores and prevents moisture penetration, thereby deterring moss spores from taking hold again.

Will changing the pH of my soil prevent moss from returning?

Modifying your soil’s pH can help discourage moss regrowth in pavers. Aim for a slightly acidic pH around 5 to deter moss while still allowing desired plants to thrive. Test the soil first, then amend it gradually with sulfur to lower pH or lime to raise it.


Don’t let moss take over your beloved paver stone patios or walkways. Removing it can seem daunting, but armed with the right knowledge, you can banish moss for good.

Over 95% of homeowners deal with moss invading paver stones at some point. With persistence and the effective moss-killing solutions outlined here, you’ll restore your pavement’s beauty.

Test small areas first before tackling the whole space. Allow sufficient dwell time for the moss treatments to work before rinsing. Scrubbing and pressure washing enhance removal after chemical application. Sweep or jet wash away dead moss post-treatment.

For lasting results, increase sunlight exposure, address moisture sources, keep the area clean and dry, and seal pavers. With diligence and the proper removal methods, including muriatic acid when needed, you can successfully kill moss in pavers and prevent its return.

Your pavement will once again be an inviting, moss-free space for entertaining, play, and curb appeal.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.