Skip to Content

How to Dissolve Concrete in a Drain Pipe [5 Methods to Dissolve]

It’s no surprise that pouring concrete down your drains might cause pipe blockages.

When the concrete hardens, dissolving it becomes challenging. It would be best to dissolve concrete as soon as you know about it.

How to dissolve concrete in a drainpipe?

There are several methods for dissolving concrete in pipes. First, use a dissolver to dissolve the concrete. Then, remove wet concrete with a shop vac. The shop vac can remove the concrete once the dissolver has been poured in. It’s also possible to clean the system with a high-pressure hose.

Here’s a sneak peek at what you can look forward to in the current issue. 

Would you like to know anything else? Let’s swoop into the main discussion!

How Do Concrete Blocks in Drain Pipe?

Often cement and concrete stick to the wood or inside of your pipes when flushed down the drain. Somehow if they dry and create layers, problems will arise. The New layers of cement will reduce the diameter of your drains. 

Affected water flows, especially in bends and corners where the substance collects. This is more than likely. Your pipes will take longer to drain if you allow this to happen. 

In addition, food particles, fats, oils and even soap can build up faster. It happens if the pipe is leading from a bathroom sink. 

Wastewater and debris will back up if the obstruction gets too severe. So, either unclog the drain yourself or hire a professional to do it for you.

5 Methods of Dissolving Concrete in Drain Pipe

There are many ways to get concrete down drains. A simple way to get rid of concrete from your drain is to wash them daily. 

Your skin may come into contact with the concrete as it dissolves. Wipe out cement from your skin as soon as possible if it comes into contact with your skin. 

It’s better to wash outside than to stand in a pool of murky water. Because sometimes, concrete has built up in the shower drain and blocked the pipe.

But there are some methods of dissolving concrete in drain pipes. Now we’re going through them! Check the dissolving methods below-

Method 1: Using Concrete Dissolver

You may unclog a clogged drain by using a concrete dissolver. For cleaning, you’ll need to purchase the ideal concrete dissolver solution.

Here, we’ve compiled two best concrete dissolvers to assist you. You can see them by the table below:


These concrete dissolving products must be used on dry concrete to work. The only way to get rid of backed-up water is to run water down the drain. A correct size shop vac is the simplest way to accomplish this. 

Here are the effective steps to use concrete dissolver:

  1. Use a shop vac to remove any water and other debris accumulated in the drainage system.
  2. Make sure it dries for at least 24 hours before moving on.
  3. In the drainpipe, add one cup of the concrete dissolving product.
  4. A cup of the product should be added in 24 hours. Drains should not be filled with water.
  5. Use the shop vac to remove the sticky concrete after another 12 to 24 hours. A cup of water and another 24 hours is needed if there is still concrete.
  6. Sludge that remains can be vacuumed up and disposed of as normal.
  7. Remove any remaining concrete with an auger or a plumbing snake.
  8. Let it sit for 24 hours. Do it before using another cup of product to get rid of the remaining concrete. 
  9. Use a pressure washer to remove any remaining residue from the drain.

Method 2: Using Acid on the Problem

Is it your first time using hydrochloric acid (HCl)? Then there are some things to consider. Working with this substance necessitates the use of protective gear for your skin, eyes, and lungs. 

Wear long rubber gloves, a face mask, and eye protection while using HCL.

One cup of acid should be slowly poured down the drain. Allow at least three to four hours for the mixture to rest. After that, run four gallons of water down the drain to clean it out thoroughly. 

Finally, you can use a plunger or plumbing snake to remove the remaining concrete. Before this, make sure that all of the acids have been removed.

Method 3: Using a Plumbing Snake

A  plumbing snake is a long steel cable used to unclog drains and pipes. To twist the line, push the cable into the drain. Push it as far as it will go, then turn the handle. 

Keep doing this until the drain is clean or you decide to move on.

Method 4: Trying an Electric Power Auger

Concrete clogs can be removed with the help of a professional power auger. Misusing it can result in harm to your pipes. 

So, it would help if you practiced using it correctly before attempting to fix the problem. If you watch a few YouTube tutorials, you’ll be an expert in no time.

Method 5: Flushing the Line

Use a high-pressure hose to flush the line with a significant amount of water. An extended period will be required to flush the concrete out of the line. 

But know first what kinds of hose bibs are needed for your task. It will prevent it from becoming trapped farther down the pipe.

The Last Option: Replacing the Drainpipe

Have you tried everything and your drainpipe is still clogged? Then it’s time to bring in a professional. The pipe will have to be removed, which will require tearing up the flooring. 

When looking for a plumber, do some research if you don’t already know one. Ensure the plumber you hire is the best fit for the job. 

This concludes my conversation here. I’ve also added some productive issues in this article. You can do it easily without hiring a professional if you follow the instructions.


What are the ingredients for making a concrete dissolver?

Answer: Fill a 5-gallon plastic bucket with five parts fresh water. Add 1 part acid-based masonry or concrete cleaner. Consult the container’s label for the solution per part. 

Is there a substance that can dissolve concrete?

Answer: The significant substances used to dissolve masonry concrete. These are phosphatidic acid and trisodium phosphate. Use muriatic acid, a strong hydrochloric acid, to get rid of any previous acids. 

Does sulfuric acid dissolve concrete?

Answer: In contact with concrete, sulfuric acid quickly reacts and dissolves the material. Concrete pitting and crumbling might occur as the acid penetrates deeper into the concrete. Sulfuric acid in concrete should be neutralized and removed to prevent significant damage.


Now you know everything on how to dissolve concrete in a drain pipe. We hope that you found our guidelines to be helpful. 

Always wear safety gear when working with acid or any electrical work. Don’t be too late while dissolving concrete from drains.

For now, that’s all there is to say. We’ll catch up soon!