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How to Seal a Fountain Base [4 Simple Steps]

Are you worried that your fountain isn’t properly sealed? Well, I understand your worry of water leaking through at any moment. But hey, you aren’t alone. Most people with fountains have this fear. So, if you’re considering sealing your outdoor fountain, I’m here to help.

How to seal a fountain base?

First, clean the fountain surface. Get a sealant and follow the manufacturer’s directions for stirring the sealer. Next, spray the interior and exterior of the fountain base with sealant. Then let that dry and spray it once again. Lastly, remove any extra sealant with a dry cloth. 

Still not sure if you can do it or not? Don’t worry. I have an entire article describing everything in a step-by-step process. 

How long are you going to be waiting? Check it out!

Things You’ll Need to Seal a Fountain Base 

Having a fountain looks pretty cool. But what most people don’t know is you’ll need to take proper care of it to make it look beautiful. 

The very first step is to seal the base of your fountain. If the fountains are not properly sealed, water might leak through the cover. 

It is not hard to seal concrete or terracotta fountains, but it is a vital component of the procedure. It is even more important if you’re constructing the fountain yourself. At your local garden supply store, choose a suitable sealant for the surface of your fountain.

But, before you get overly enthusiastic, there are a few things you’ll require. You could notice some of these lying around your house. In case you don’t, you might need to go to your closest hardware store. 

Without further delay, let us see what they are:

  • Scrub brush 
  • Concrete cleaner 
  • Power washer 
  • Water hose
  • Liquid sealers
  • Spray bottle 
  • Paintbrush 

Got everything ready? Good. Now let’s start the sealing process. 

4 Easy Steps to Sealing a Fountain Base

No work is ever too easy. Whether you’re removing backstab wires or sealing a fountain base, you need to follow some manuals. With that being said, it’s better to follow some step-by-step processes when taking on a project. 

And that is just what I have in store for you. Let’s see what they are. 

Step 1: Clean The Fountain Surface

Scrape loose debris, oil and filth from the top of the outdoor fountain. Use a wash brush and concrete cleaner. To clean all of the foam and grime from a cement fountain, use a power washer. 

Using a degreasing cleaner and a water hose, wash the terra cotta fountain. Let it sit for thorough drying of the wash. 

Now let’s move on to the next step.

Step 2: Prepare the Sealer  

Mix the sealer according to the manufacturer’s instructions. Durable concrete or molded terracotta are commonly used for outside fountains. 

Concrete and terracotta are both water-absorbing substances by definition. 

Fill a spray sprayer with liquid sealers. You may alternatively mix them into a plastic container and apply them with a brush.

You can use concrete or terra cotta sealer. If you don’t have any idea about sealers, then you can use our suggestions:

Product 1
Product 2

Both of them are high-quality sealers. You can make good use of any of these. 

Now that you got your sealer ready, let’s start with the sealing process. 

Step 3: Spray the Sealer

Spray the interior of the fountain base with concrete or terracotta sealant. It’s crucial to remember to spray both indoors and outside. So, do the same with the exterior of your fountain base.

This will guarantee that the base of your fountain is completely sealed. Also that there is little danger of leaking. You can also accomplish this with a paintbrush or a spray gun.

Keep a 6 to 8-inch separation. This should be between the spray applicator and the base of the fountain reservoir. Drag down the spray lever. After that, smoothly rotate the spray container or spray nozzle from left to right. 

Carry on in this manner till the surface area has been coated. With a dry cloth, wipe away any excess terracotta sealant. Finally, let the sealer settle.

Now if you want to use a paintbrush then that’ll be a different case. For this, you’ll need to follow another procedure. 

If you wish to brush the sealer on, tip a paintbrush into the sealer. After that add a thin layer to the top of the fountain reservoirs. 

Soak the paintbrush with the sealer and spread it to the fountain until it is completely covered. With a clean cloth, brush away any excess terracotta sealant. Let the sealer completely dry.

Step 4: Redo the Process

Redoing the key parts are almost essential when you’re doing a cleaning or sealing process. Whether you’re cleaning a grill brush or sealing something you’ll need to redo one crucial step. 

So, once you’re done coating the fountain base once, you’re not done.  Apply a second set of sealants to the reservoir of the outside fountain.

 After that remove any extra terracotta sealant with a damp cloth. Wait for thorough drying of the sealer.

Once the sealer is all set then your project is finally finished. Keep in mind that the sealing of the fountain base requires a lot of time and patience. So make sure you have an entire day free just for this. 

It’s also critical that you complete this task flawlessly. If you seal your fountain base properly, it’ll also help in keeping out algae


Question: Is Flex Seal suitable for use in fountains?

Answer: Yes, flex seal is good to use for fountains. It is watertight, corrosion-resistant, and available in a variety of vibrant colors. Therefore, Flex Seal is an excellent choice. As a matter of fact, it’d be an excellent match for your tabletop fountains.

Question: What’s the best way to keep my concrete fountain from leaking?

Answer: Put a waterproofing sealer or paint on the cement. Use a razor knife to assist the sealant to infiltrate the fissures. Ensure that all gaps are closed. Allow plenty of time for the sealant to harden. Sand the sealant if necessary.

Question: What’s the best way to locate a leakage in a water fountain?

Answer: Turn off your fountain and refill it all the way to the top. If there is a breach in your fountain, the level of water will decrease after a time. If there is a leak in the fountain, the earth beneath it should also become soaked.

Final Word

How to seal a fountain base? You should have a fair understanding of how to go about doing it by now.

However, it is not as straightforward as it looks. So, be sure you have the patience to complete it. 

Good luck with your project!