DIY Pizza Oven Building Guide: How to Build Your Own Outdoor Oven

Looking to build your own wood-fire oven right in your outdoor kitchen? Here are several instructions to guide you through the DIY outdoor oven building process.

1. Gather the materials.

Here are the things you need to have to be able to create an outdoor oven:

  • Brick tile
  • Cement mixer
  • Concrete mix
  • Trowels
  • Shovel
  • Tape measure
  • Angle iron
  • Welder
  • Rebar
  • Cinder blocks
  • Grout bag
  • Work gloves
  • Safety glasses
  • Plywood
  • Oven kit (dome elements, base elements, thermal blanket, and metal door)

You also need to decide on the dimensions you want for your oven.

2. Build a foundation.

Using cinder blocks, build an L-shaped structure that is big enough to accommodate the oven and have space for the counter. Pile up the blocks and fill the holes with a slab of concrete. To support the concrete, lay a rebar into each hole.

When you’re done smoothing cement on the base, leave it to dry.

3. Create the floor of the oven.

The oven’s floor or the hearth should be made up of bricks in two layers, with the first one laid right above the cement board on the other side of the upper layer. The second layer is placed on top of the first one using water and silica so that it’s easy to take off when any of the bricks get damaged or cracked.

Because food like pizza can get into contact directly with the hearth, it should be safe and sanitized for food. To ensure food safety and prevent contaminants from reaching the food, cover the hearth in a vapor barrier.

4. Build the roof of the oven.

This step involves three tasks: deciding on the height of the roof, creating the roof form, and building the roof itself.

Deciding on the roof height

Measure the height of the opening and deduct it from the ideal opening height for an outdoor oven. Mark the opening’s width, the center point, and the center point to the 6-inch mark.

Creating the roof form

Use a rigid and flexible metal to create your form curve. Use a sliding T-bevel to locate your roof’s beginning angle and move that to the next bricks that will support the rest of the roof and bear its weight. Now, cut the form curves using a wet tile saw or a masonry saw. To prevent the oven from falling apart, secure the wall with two pieces of angle iron and attach them together with bolts and rods.

Building the roof

Proceed with building the roof with the rectangular brick, shaving any excess bricks to achieve a better fit. To make the roof strong, using a refractory mortar isn’t enough—you’ve got to combine it with ground-up fire brick. This will make multiple layers between the big joints for roof strength.

Finally, clean up the refractory mortar joints inside the oven that are hidden by the form. You’ll be spending around an hour for this task.

5. Build the chimney.

Use again your roof form to shape an identical one in the chimney. Also, use the remaining refractory mortar to finish the chimney’s base.

6. Build a façade.

This water-tight structure will serve as protection for the refractory mortar. Insulate the space between the actual oven and the façade using mineral wool or ceramic wool that can keep as much cooking heat as possible.

7. Install the door and handle.

For the oven door, you can have one custom-made out of two corrosion and heat-resistant metal layers. Then mount a handle to the front door. Now your outdoor oven is ready to bake pizza, pie, bread, and what have you!