How To Build A Brick Bbq And Pizza Oven

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Constructing a combined brick BBQ and pizza oven creates a durable, multi-functional centerpiece for your outdoor cooking space. If you’re looking for a detailed guide on how to build a brick bbq and pizza oven, you’ve come to the right place. This project will give you a permanent fixture for grilling, smoking, and baking authentic wood-fired pizza. It requires planning, effort, and some basic masonry skills, but the results are incredibly rewarding.

This guide will walk you through the entire process, from initial design to the first fire. We’ll cover everything from choosing a location and gathering materials to the step-by-step construction of the foundation, base, cooking chambers, and chimney. With careful attention to detail, you can build a structure that will last for decades and become the heart of your backyard gatherings.

how to build a brick bbq and pizza oven

This main section outlines the complete, sequential process for your build. Think of it as your master blueprint. We’ll break down each major phase into manageable steps, ensuring you understand the purpose and method behind every layer of brick and mortar.

Planning and Design Considerations

Before you mix your first batch of mortar, thorough planning is essential. Rushing this stage can lead to costly mistakes or a final product that doesn’t meet your needs. Start by asking yourself some key questions about how you’ll use the structure.

Choosing the Right Location

Selecting the perfect spot is about more than just aesthetics. You need to consider safety, convenience, and local regulations. Your chosen location will be permanent, so choose wisely.

  • Check Local Codes: Always contact your local building authority to inquire about permits, required setbacks from property lines, and any restrictions on outdoor solid-fuel appliances.
  • Safety First: Place your BBQ and oven a safe distance from your house, fences, sheds, and overhanging trees. A minimum of 10 feet from any combustible structure is a good rule of thumb.
  • Wind Direction: Note the prevailing wind in your yard. You want the smoke from the chimney to blow away from your house and main seating areas, not into them.
  • Utility Access: Ensure the site is relatively level and has easy access to your kitchen for ferrying tools and food. Consider proximity to seating areas and lighting for evening use.

Determining Size and Layout

The size of your build depends on your available space and cooking needs. A common and efficient design integrates the pizza oven directly beside the BBQ grill, sharing a common chimney. Sketch your ideas on paper first.

  • BBQ Grill Area: A cooking surface of about 24 inches by 30 inches is a versatile size for most families. Decide if you want a simple grill grate or incorporate features like adjustable height or a rotisserie.
  • Pizza Oven Dimensions: A dome interior of about 30 inches wide will allow you to cook a standard 12-inch pizza comfortably. The height of the dome should be roughly 60-70% of the interior width for proper heat circulation.
  • Work Surfaces: Include generous counter space on one or both sides of the cooking areas. Brick or stone slabs make excellent, heat-resistant surfaces for prep and plating.
  • Storage: Design in a compartment below the grill for storing wood, charcoal, or cooking tools. This keeps your fuel dry and your space tidy.

Gathering Tools and Materials

Having everything on site before you start will make the project run smoothly. This is a list of the core items you’ll need. Quantities will vary based on your specific design.

  • Materials: Concrete mix, gravel, cinder blocks or bricks for the base, fire bricks, refractory mortar, standard bricks, regular mortar mix, a concrete slab for the hearth, steel angle iron or rebar, a grill grate, an oven door (metal or homemade), chimney pipe and cap, and insulation material (vermiculite concrete or ceramic blanket).
  • Essential Tools: Shovel, wheelbarrow, masonry trowel, level (a long one is crucial), string line, tape measure, brick hammer, chisel, bucket for mixing, jointer, work gloves, and safety glasses.

Building a Solid Foundation and Base

The foundation is the most critical part of the build. A weak or uneven foundation will lead to cracking and structural failure over time. Do not cut corners here.

Step 1: Excavation and Footings

Start by marking out the perimeter of your base on the ground using string and stakes. The base should be at least 6 inches wider on all sides than the planned structure above.

  1. Excavate the area to a depth of at least 12 inches below the frost line (check local requirements). This prevents heaving during freeze-thaw cycles.
  2. Fill the hole with 4-6 inches of compacted gravel for drainage. Tamp it down firmly.
  3. Build a wooden form to contain the concrete footing. The footing should be about 8 inches thick and extend across the entire excavated area.
  4. Pour the concrete into the form, level it, and allow it to cure completely for at least 48-72 hours before proceeding.

Step 2: Constructing the Base with Cinder Blocks

The base raises the cooking area to a comfortable height and provides storage. Cinder blocks are strong, straight, and faster to lay than individual bricks.

  1. Dry-lay your first course of cinder blocks on the cured footing to confirm your layout. Use a string line as a guide for straight walls.
  2. Mix your mortar and begin laying the blocks, checking for level and plumb with each one. Fill the hollow cores of the blocks with concrete and rebar for added strength as you go.
  3. Build the base to your desired height, typically 32 to 36 inches for comfortable cooking. Cap the top course with a solid concrete slab or a double layer of brick to create a sturdy, level surface for the hearth.

Constructing the BBQ Grill Section

With a solid base in place, you can start building the functional components. We’ll begin with the BBQ grill, as its construction is generally more straightforward than the pizza oven dome.

Step 3: Building the Grill Walls and Opening

The grill area consists of three walls that create a firebox. The fourth side is the open front where you will acces the grill.

  1. On your base slab, mark out the footprint of the grill chamber. The back and two side walls will be made of brick.
  2. Lay the first course of fire bricks using refractory mortar. Fire bricks are essential here as they withstand direct flame. Check for level and square.
  3. Continue building up the walls to a height that will comfortably fit your grill grate. Typically, 4-5 courses of brick is sufficient.
  4. At the front opening, you will need to create a lintel to support the bricks above. Place a piece of steel angle iron across the opening, ensuring it is well-supported at both ends. Then, continue building the brick courses over it.

Step 4: Installing the Grill Grate and Ash Drawer

These features add functionality and make cleanup easier. Plan for them as you build the walls.

  • Grill Grate Support: As you build the side walls, leave small ledges or gaps to support the ends of your steel grill grate. You can also use removable brackets.
  • Ash Collection: For easy cleanup, design a slot or opening near the bottom of the grill chamber. You can slide a metal ash pan in and out from the front. This is much easier than scooping ash from the top.

Building the Pizza Oven Dome

This is the most challenging and rewarding part of the project. The dome’s shape is crucial for efficient heat retention and circulation. Patience is key.

Step 5: Creating the Hearth and Arch Form

The oven floor, or hearth, must be perfectly level and made of material that can store heat.

  1. On the base slab, next to the BBQ, create a bed of sand or a thin mortar layer. Lay your fire bricks tightly together to form the cooking floor. These bricks must be flat and level.
  2. To build the dome, you need a form to support the bricks until the mortar sets. You can make a temporary form from damp sand. Pile sand into the shape of your desired dome interior on top of the hearth, then cover it with wet newspaper to prevent the mortar from sticking.

Step 6: Laying the Dome Bricks

Using the sand form, you will build the dome arch brick by brick. Use only fire bricks and refractory mortar here.

  1. Start at the front of the oven, laying bricks in a circle on the hearth, butting them against the sand form. This is the first course.
  2. For subsequent courses, each brick must be angled inward. The refractory mortar will hold them in place against the sand form. The key is to ensure each brick is supported by its neighbors, creating a self-supporting arch.
  3. Work your way up and around the sand form, constantly checking that the bricks are evenly spaced and the curve is smooth. The final few bricks at the very top form the “keyhole” and may need to be cut to fit.
  4. Once the mortar has set for 24-48 hours, carefully scoop out the sand form from the oven door opening. The dome should now support itself.

Step 7: Adding Insulation and the Outer Shell

Without insulation, your oven will lose heat too quickly. This layer is non-negotiable for proper pizza oven performance.

  1. Apply a 2-3 inch layer of vermiculite concrete (a mix of vermiculite, cement, and water) over the entire dome. This creates a lightweight, insulating layer that traps heat inside the oven chamber.
  2. After the insulation cures, you can build an outer decorative shell of standard bricks using regular mortar. This protects the insulation and gives your oven a finished, polished look. This shell does not need to follow the dome shape exactly; a square or rectangular enclosure is common and easier to build.

Finalizing the Structure

The last stages involve tying the two units together and ensuring smoke is properly vented. These steps make the build cohesive and functional.

Step 8: Building a Shared Chimney and Flue

The BBQ and pizza oven can share a common chimney, which simplifies construction and creates a unified appearance.

  1. From the top rear of both the grill chamber and the pizza oven dome, create an opening that will channel smoke into a common flue. This is often done using brick to create a channel.
  2. Construct a brick chimney stack above this point. Install a stainless steel chimney liner for durability and safety, capping it with a rain cap to prevent water entry.
  3. The chimney height is important for good draft; it should extend at least 2 feet above any roof line or structure within 10 feet.

Step 9: Applying Finishing Touches

These details enhance safety, usability, and the overall aesthetic of your build.

  • Door: Craft or purchase a metal door for your pizza oven. It is used to seal the opening after a fire to retain heat for slow cooking.
  • Countertops: Install your chosen heat-resistant countertop material on the work surfaces. Natural stone or cast concrete slabs are ideal choices.
  • Sealing: Consider applying a brick sealer to the exterior to protect it from weather stains and moisture. Ensure any sealer is rated for high heat if used near openings.
  • Curing: Before cooking in your oven, you must cure it. This involves lighting a series of small, progressively larger fires over the course of a week to slowly drive moisture out of the bricks and mortar without causing cracks from rapid thermal expansion.

FAQs About Building a Brick BBQ and Pizza Oven

Here are answers to some common questions about the building process and materials.

What is the best type of brick to use for a pizza oven?
You must use fire bricks (also called refractory bricks) for the interior of the pizza oven dome and the BBQ firebox. They are designed to withstand extreme and repeated thermal shock without cracking. Standard house bricks or pavers can explode under high heat and are only suitable for the non-heat-bearing outer shell.

Can I build a brick BBQ and oven on a wooden deck?
No, this is not safe. The weight of the structure is immense, and the heat radiated poses a serious fire hazard. You must build on a stable, non-combustible foundation on the ground, such as a concrete footing and base as described in this guide.

How long does it take to build an outdoor brick oven and grill?
For a DIY builder with some experience, the project can take several weekends. The foundation and base require significant time for excavation, pouring, and curing. The dome construction itself is meticulous work. Rushing can compromise the structure, so plan for at least 60-80 hours of work spread over a few weeks.

What’s the approximate cost to build a combined unit?
Costs vary widely based on materials and size. A basic, medium-sized build using new materials typically ranges from $800 to $2,500. This includes concrete, blocks, fire bricks, mortar, and a chimney. Salvaged bricks can reduce cost, but never salvage fire bricks from unknown sources, as they may be compromised.

How do I maintain my brick BBQ and pizza oven?
Regular maintenance is simple. Cover it with a waterproof, weatherproof cover when not in use for extended periods. Brush out ash after each use to prevent corrosive buildup. Inspect the mortar joints annually and repoint any that have cracked or eroded with fresh refractory or high-temperature mortar. Avoid using harsh chemicals or power washers on the interior.