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How I Built My DIY Pumice Wood Fired Pizza Oven

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Cooking my first pizza in the oven

Cooking my first pizza in the oven

Making The Form For The Pizza Oven.

For a long time I wanted to make my own wood fired pizza oven. Recently I decided to give it a try and I documented the process. I made mine with regular cement and pumice as it was easy to get from a local store however you can also use vermiculite.

The first step is making the form. The main part of the form is a gym ball. I used a gym ball that was 65cm in diameter however if you can find one that is a little larger then that may be better. Now we need to make something to support the gym ball. I cut a circle out of a piece of scrap wood that was roughly the same size as the gym ball. Don't worry about getting the circle perfect as you can always tape a little cardboard over the holes. I sat the gym ball up on top of some old weight plates so that it was supported well. For the opening I used an old metal part from a heater that was the right size and shape.

The form completed

The form completed

The ball sitting on weights for support

The ball sitting on weights for support

Covering the gaps with cardboard and tape

Covering the gaps with cardboard and tape

Covering The Form With The Pumice And Cement Mix

The next step was to cover the form with a pumice and cement mix. The ratio I used was 1 part cement to 5 parts coarse pumice. Once you have added the pumice and cement together mix the two ingredients together and then add your water. I found on average I would use around 0.5 parts water as you want the mixture to be fairly dry. Now you need to cover the form with the mixture. I made mine about 1.5" in thickness all around and a little thicker on the top part of the dome. Once you have covered the form completely you want to leave it for around 1 week to dry before you remove the ball. To do this simply let the air out of the ball.

After doing this you can add another pumice and cement mix this time using finer pumice for a nicer finish.

The form covered completely with pumice and cement

The form covered completely with pumice and cement

Covering the ball with the cement and pumice mix

Covering the ball with the cement and pumice mix

Making The Base

The last part of the process is the base. I used a piece of wood for the main part of the base which I had lying around. The piece of wood was larger than the pizza oven so it worked perfectly. I then attached pieces of wood around the sides which gave it an edge so that I could pack sand into the base. The reason I used sand was so that the wood underneath would not get hot an catch fire from the heat. Next I purchased some fire bricks which I placed on top of the sand. I then placed the oven on top of the fire bricks. The fire bricks cost me around $25 for 12. I know some people have made their base from the pumice and cement mix but I wasn't sure if it would be good to cook the pizza directly on top of it. I have used the pizza oven a few times now and will leave a video below showing you how it works.

Making the base for the pizza oven

Making the base for the pizza oven

Placing the fire bricks on top of the sand

Placing the fire bricks on top of the sand

First Time Cooking In The Pizza Oven

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.