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How to Clean Pavers with Muriatic Acid: A Definitive Answer

Over time, commonly, pavers turn pale and it needs modifications. It requires acid wash to restore its previous appearance. But most of us are ignorant of the right way to apply acid wash on pavers. 

How to clean pavers with muriatic acids?

Initially apply a dry clean over the surface using bristle brushes. Clean off the dust with water. Make your muriatic acid mixture and refill it in plastic containers. Pour the acid solution over the rusty surface. Lastly, rinse the surface to wash off the residuals. 

These are not enough to answer your query. To get the details you might go through the rest of the article. 

Without any delay, let’s hop into the discussion!

Steps to Clean Pavers with Muriatic Acids

Pavers are concrete blocks plies over the roads. Therefore, in due time they get rusty and defective. These defects might be natural or human-made reasons depending on the type of stains.

That’s why we have tried to answer all of these facts in our discussion. If you follow each of our directed steps, your job will be done in a blink of an eye. 

Let’s spill the beans and get into the business- 

Step 1: Identify Paver Stains

As we all know, pavers are made of concrete. And due to its physical structure, it is prone to natural changes. 

The natural changes it encounters are called curing. During this curing process concrete emits Ca(OH)2 in the form of moisture. 

Later it reacts with CO2 and creates CaCO3. And this substance is known as Efflorescence

This efflorescence is a power like white stains over pavers. It’s a soluble salt and base deposit that’s quite handy to clean. 

Also, be sure that they’re harmless and don’t affect the structure of pavers. These defects can easily be cleared with muriatic acids. 

If your stain is other than these efflorescences, then muriatic acid might not work. Also if you don’t follow proper instructions, muriatic acid might harm you much more than you can expect. 

Therefore if you’ve efflorescence on your pavers, you’re invited to continue to the following steps. These steps will answer how you can deal with these stains using muriatic acid. 

Step 2: Necessary Equipment

To accomplish this whole cleaning process we’ll need some tools in hand. They are as follows- 

  • Hosepipe. (for watering over the pavers)
  • Muriatic acid.
  • Plastic Watering Container (Avoid Metal container)
  • Safety goggles, boots, and nitrile gloves. 
  • Stiff bristled brushes
  • Vinegar (Preferable)

After collecting above mentioned tools go on the next steps for further instructions. 

Step 3: Cleaning The Surface

Before applying acid solutions you should give a dry clean over the pavers. Simply sweep over the dry efflorescence. And for these purposes, you can use stiff brushes or a shop broom.

To clear the white powdered efflorescence, you can use a leaf blower also. You might wonder why you would need to do so. Why not simply apply the acid solution? 

Dry cleaning removes extra stains that don’t need any acid wash. Also by dry cleaning, it ensures you don’t wash any salt back into the pores of the pavers. 

Thus it’ll confirm a perfect finishing for efflorescence-free pavers.

After giving a dry clean make sure your hose pipes are ready to go. Fix it tightly with the water tape so that they don’t disintegrate while watering. 

Make sure your hose reaches most of the parts of your paving stones. Now attach the spray nozzle and turn on the water supply. 

They quickly water over the treated dry paver to clean the dry stains. Rinse the surface properly so that it’s prepared for the final cleaning. 

Up next we’ll learn how to prepare the acid solution to be applied. And will know how to apply it over the efflorescent pavers. 

Step 4: Prepare Muriatic Acid Solution 

Cleaning pavers with muriatic acid is similar to washing concrete with muriatic acid. So any previous knowledge of the usage of muriatic acid might be a notable benefit for you. 

Whatever knowledge you’ve, let’s start from scratch. To prepare muriatic acid solution you’ll need a plastic water can and water. As we know muriatic acid aka hydrochloric acid is incredibly strong.

If you don’t follow proper measurements it’ll harm your skin, lungs, and eyes. Therefore before making an acid solution we suggest you wear safety goggles, gloves, and boots.

We recommend filling the container with water first. Then thoroughly add acid to the water. It’s highly suggested to use plastic containers. Because muriatic acid is prone to metal substances. 

Therefore it’ll melt down the container and will end up financial losses. As we need to maintain perfect measurements, you can use cheap measuring cups also. 

Otherwise, you’d risk yourself overflowing the container by spilling the mixture. 

You have to use a light solution of 12:1 muriatic acid with water. Or simply mix 10 ounces of acid with each gallon of water. 

In standard terms, two-gallon watering can afford 1.8 gallons or 256 ounces of water. And 20 ounces of acid at the same time. 

Again we wanna remind you to mix the acid in proper proportion. Or you’ll have to suffer rather than have benefits. 

Here’s a list of some best muriatic acid manufacturers. It’ll make your job easy to choose the best from various producers.

Product 1
Product 2

Step 5: Apply The Cleaning Mixture

After you’ve properly refilled the container you’re ready to pour it over the pavers. Pour the solution over a small portion of the paving stone. 

Don’t stay too long after you’ve applied the solution. If the solution remains much more than the stipulated duration, your pavers might fall into corrosion. 

For a better outcome, divide your hardships into smaller manageable treatment segments. This step is significant as it will make you able to coat the whole area quickly. Therefore the muriatic acid solution would not need to be stayed for too long. 

You don’t need to be concerned about the plants and grasses. Because the muriatic acid solution is not harmful to these plants. So make sure this acid solution reaches every nook and corner of the hardscape. 

Also, check out the flashing of pavers if the place is dry or not.  If it’s still dry then properly apply the solution. 

Muriatic acid breaks down the micron thick layers of efflorescence. So after you applied the solution you’ll notice some colored water or foaming lying over the surface. 

Don’t worry. There is nothing to worry about. After rinsing the surface with water, it’ll look as new as before. 

The time muriatic acid takes to get into the reaction is about 3 minutes. Within 3 minutes of your appliance, muriatic acid starts to break down the salt deposits.

So you should be very careful about the timing after the acid solution is applied. Otherwise, an extended duration might occur with stone corrosion. 

Step 6: Rinsing with Water

After 3 minutes passed you should rinse the area with your hose pipe. Make sure to clean all the colored water or foams from the surface thoroughly. 

Check if there don’t remain any extra acid solutions. Don’t use direct hose pipe water on plants or grasses. It might damage their natural structure. 

Rather, spraying water with any sprayer should be a good alternative. 

Thus your projected area should be cleaned off by muriatic acid solution. Repeat the mentioned steps until all of your yard pavers are cleared off. 

Quick Tips

To ensure an error-free and perfect finishing these tips will be worth sharing-

Tip 1

Cover nearer metal or asphalt material to protect them from the acid solution. 

Tip 2

Use a timer to count the time after you’ve applied the acid solution over pavers. 

Tip 3

While making new pavers with stones, try to store them in dry conditions. 

Tip 4

Before compacting pavers without plate compactors make sure the sand and cement are dry. 

Follow these tips and tricks to boost up your productivity more than ever. 


Question: Do we need to rinse muriatic acid?

Answer: Yes. They are pretty good at stain removal. After you’ve cleared all of your stains, be sure to rinse with enough water. 

Question: How long should we leave the muriatic acid over concrete?

Answer: About 20 minutes. You should properly surround the dirty area with muriatic acid. Later leave it off for 20 minutes and then start scrubbing. The stains will be easy enough to remove. 

Question: Why is muriatic acid hazardous?

Answer: It’s a very high reactive chemical. Once it’s in contact with your skin it causes severe burn issues. Also if its fume is inhaled your lung and nose lining will burn. 


After a long discussion, we’ve reached the ending part of the article. Hope we’re successful in answering how to clean pavers with muriatic acids. 

By now, if you’ve followed the instructions, it should be a piece of cake for you. 

Good luck!