Pizza > Pizza Oven

How To Waterproof a Pizza Oven in 11 Steps

What do you do if you want to make pizza at home and your oven isn’t waterproof? A pizza oven can be a great addition to any home, but it’s vital to make sure it is adequately waterproofed. 

Here are steps to help you waterproof your pizza oven. These are the materials you’ll need:

  • A waterproofing sealant
  • A brush or roller
  • A clean cloth
  • Safety goggles and gloves (optional)
  • Mild soap
  • Water solution

Step One: Clean the Oven

The first step to waterproofing your pizza oven is to make sure it is clean. Use the putty knife to scrape out any debris if you find any.

Any dirt or debris will prevent the sealant from adhering correctly, so starting with a clean surface is crucial.

You can use a mild soap and water solution to clean the inside of the oven. You may use a clean, dry cloth to wipe it. Allow the oven to dry completely before moving on to the next step.

Step Two: Make Sure the Area Around Your Pizza Oven Is Well-Drained

If water does happen to get into the area around your pizza oven, you want to make sure it can drain away quickly. You should ensure there is no standing water and that the area has good drainage.

Step Three: Apply A Waterproofing Sealer to The Outside of Your Pizza Oven

A sealant is a material applied to a surface to protect it from damage and improve its appearance. Sealants are often used on tile, granite, and marble surfaces to protect them from water and dirt.

You can also use sealants on wood surfaces to protect them from scratches and stains. Sealants are available in various colors and finishes, so you can choose the one that best suits your needs.

Sealants work by creating a barrier between the surface and the environment. This barrier prevents water, dirt, and other contaminants from penetrating the surface and causing damage. Sealants also provide a protective layer that helps to resist staining and fading. When appropriately applied, sealants will last for many years with proper care and maintenance.

You can use silicone, latex, or any other type of sealant that will create a watertight barrier. You can find waterproofing sealers at most home improvement stores and hardware stores. They usually come in either a spray or brush-on form.

Please use a brush or roller to apply the sealant evenly across the surface. Make sure to get into all of the nooks and crannies, as this will help ensure your oven is fully waterproof. Next, apply the sealant to the inside of your pizza oven. Wipe away any excess sealant with a clean cloth.

Once the sealant is applied, you need to let it cure for 24 hours before moving on to the next step, which will ensure that it is fully dry and effective.

During this time, you should keep the oven door open so that air can circulate and speed up the drying process. When applying the sealant, follow the manufacturer’s instructions carefully.

Step Four: Test the Oven

After the sealant has had time to dry, it’s time to test out the oven. Please turn it on to its highest setting and allow it to heat up for at least 30 minutes. This step will help ensure that the sealant is fully cured and that your oven is now waterproof. Fill a bucket with water and place it inside your pizza oven.

Then close the door and wait for 24 hours. If there is no water leakage, then your pizza oven is successfully waterproofed.

Step Five: Apply a Layer of Mortar to the Inside of Your Pizza Oven

Mortar is a material used to make walls and other structures. It is made of a mixture of sand, lime, and water. Mortar is usually used with bricks or stones to form a wall.

This material is important in construction. It is strong and durable and can withstand a lot of weight. Mortar is also easy to work with, and it dries quickly.

There are many different types of mortar, and each type has its own advantages and disadvantages. Mortars are classified according to their intended use. The three main types of mortars are masonry, plastering, and stucco mortars.

Masonry mortars are used to build brick, block, and stone walls, plastering mortars to apply plaster to walls and ceilings, and stucco mortars to create a smooth surface on exterior walls.

 Advantages of using mortar in a pizza oven:

  • Mortars provide a strong bond between bricks, blocks, and stones.
  • Mortars can be applied in a variety of thicknesses.
  • Mortar dries quickly, which allows for faster construction times.
  • Mortar is less likely than other adhesives to shrink or crack as it dries.


  • If not applied correctly, mortars can cause a brick, block, and stone walls to crumble.
  • Mortar is not as strong as concrete, so it is not recommended for load-bearing walls.
  • Mortar can be difficult to remove if misapplied.

Apply a layer of mortar to the inside of your pizza oven. Use a trowel to apply the mortar in a thin layer, covering the entire surface. Next, apply a layer of bricks over the mortar. Start at the bottom and work your way up, applying each brick in a row. Make sure to press each brick firmly into place.

This step will help to create an additional barrier against moisture. Make sure to allow it to dry completely before using your pizza oven.

Step Six: Cover Your Pizza Oven with a Tarp When Not in Use

A tarp is a piece of fabric that is typically made from heavy-duty materials such as canvas or vinyl. It is most commonly used to cover objects or protect people from the elements. Tarps can be found in a variety of sizes and shapes, as you can see in the images.

Another way to waterproof your pizza oven is to cover it with a tarp or other type of waterproofing material when not in use.

This will help protect it from rain, snow, and other elements that could damage it over time. Make sure your tarp is big enough to cover the entire oven, including the chimney. Use bungee cords or rope to secure the tarp in place. Be sure to remove the tarp or other material before using the oven, as it could catch fire if left on while the oven is in use.

Step Seven: Bring Your Pizza Oven Inside During Extreme Weather Conditions

If you know that a storm is coming or temperatures will drop below freezing, it’s best to bring your pizza oven inside to protect it from the elements.

Step Eight: Store Your Pizza Oven in a Dry Place When Not in Use

It’s essential to store your pizza oven in a dry place when not in use, which will help protect your oven from moisture and corrosion.

If you store your oven in a damp place, it could rust and become unusable. Make sure you keep your oven in a dry place so you can continue using it for years to come.

Step Nine: Inspect Your Pizza Oven Regularly for Any Signs of Water Damage

It’s crucial to regularly inspect your pizza oven for any water damage signs left untreated; water damage can cause expensive and extensive repairs. Here are a few tips on how to check your pizza oven for water damage:

  • Check for any visible signs of water damage, such as peeling paint or wallpaper, warping wood, or mold growth.
  • If you see any signs of water damage, it’s important to investigate the source of the problem and have it repaired as soon as possible.
  • Inspect your pizza oven’s chimney and regularly flash to ensure no cracks or leaks. If you do find any problems, have them fixed immediately by a qualified professional.

Step Ten: Replace Any Parts That Show Signs of Wear And Tear

If you notice that any parts of your pizza oven are starting to show wear and tear, be sure to replace them. This will help to prevent any water damage from occurring.

Step Eleven: Keep an Eye on The Weather Forecast

If you know that bad weather is coming, be sure to take steps to protect your pizza oven accordingly. Bring it inside or cover it with a tarp.

Parting Shot

Waterproofing your pizza oven is a simple and easy process that anyone can do at home. By following these steps, you’ll be able to enjoy delicious, fresh pizzas anytime – no matter what the weather is like outside.

Just remember to practice safety when working with any type of sealant or paint, and you’ll be good to go. Happy cooking.

Two fresh pizzas