Introduction
Building your own brick BBQ with a chimney is a rewarding DIY project that allows you to create an elegant and functional outdoor cooking space. With the right planning and materials, you can construct a sturdy, eye-catching BBQ that will be the highlight of your backyard for years to come.
A brick BBQ with a chimney has several advantages over other types of BBQs. The brick holds heat well, providing even cooking temperatures, while the chimney draws smoke up and away from your food. This allows you to use flavorful woods for smoking without making your food overly smoky. The brick and chimney structure also gives the BBQ a classic, rustic look that fits nicely into any backyard design.
Constructing a brick BBQ does require some masonry skills and access to the right materials. But with proper preparation and by following crucial construction steps, you can achieve fantastic results. This guide will walk you through the entire process of planning, building, and finishing your own brick BBQ with a chimney. Let’s get started!
Planning Your Brick BBQ with Chimney
Proper planning is crucial for successfully building your brick BBQ. Here are some key steps:
Choose a Location
- Pick a spot in your yard that gets sufficient sun and air flow but is also protected from strong winds.
- Allow enough space around the BBQ for convenient access and workflow.
- Consider proximity to your patio or deck for serving food.
Design the Shape and Size
- Typical shapes are rectangular, square, or rounded. Size depends on your needs.
- Allow at least 400-500 square inches of grill space per person you plan to serve.
- Design the firebox to be about 1/3 of total size to allow enough room for cooking.
Obtain Building Permits
- Most areas require permits for permanent BBQ structures. Research permit needs for your location.
Create a Materials List
- Bricks, sand, mortar, cement, chimney flue liner, grill grates, etc. Calculate precisely!
Draw Up Plans for the Design
- Make detailed drawings of the shape, dimensions, and construction steps. This is vital for success.
Gather Tools and Materials
These are the key tools and materials you will need:
- Masonry tools – trowel, mortar board, grout bag, jointers, etc.
- Firebricks and regular bricks
- Metal rods for reinforcing
- Mortar, cement, and concrete mix
- Sand and gravel
- Grill grates
- Chimney flue and cap
- Metal flashing and sealant
- Landscaping materials
Construct the Base
The base supports the entire structure, so proper construction is crucial:
- Dig a trench as wide as the BBQ to below the frost line and fill with gravel for drainage.
- Pour a thick concrete pad reinforced with rebar. Make it perfectly level.
- Let the concrete fully cure for at least one week before building on it.
Build the Firebox
The firebox contains the fire and heat needed for grilling:
- Use high-heat firebricks rated for temperatures up to 2000°F.
- Construct walls 6-12 inches thick depending on planned fire size.
- Leave an opening in front to access the firebox. Use removable metal doors later.
- Angle the walls inward slightly so the firebox gets narrower towards the top.
Construct the Chimney
The chimney draws smoke up and circulates air for proper combustion:
- Use regular bricks for the chimney walls since less heat is required.
- Make walls 4 inches thick and line inside with fireproof chimney flue liner.
- Extend the chimney at least 3 feet above the highest point of the BBQ.
- Install a chimney cap at the top to prevent rain from entering.
Build the Grill Section
This is where you will place the grill grates for cooking:
- Use regular bricks and leave space for installing grates later.
- Connect to firebox opening so heat and smoke can reach the grill area.
- Construct walls 4 inches thick.
- Leave enough room for grates sized based on your design plans.
Install Metal Flashing
Flashing prevents smoke and water leaks:
- Place metal flashing wherever the chimney meets the BBQ walls.
- Seal edges thoroughly with high-heat silicone sealant.
- Also install flashing around doors, openings, and where walls meet at angles.
Apply Mortar and Finish Brickwork
This final step gives a smooth finished look:
- Apply mortar between all the bricks to seal any gaps.
- Smooth and shape mortar using a jointer for a consistent appearance.
- Allow mortar to fully cure for a week before heating up the BBQ.
- Whitewash bricks if desired. Brick dye can also be mixed into mortar.
Add Doors, Grates, and Accessories
The final touches turn it into a functioning BBQ:
- Install high-temperature removable steel doors on the firebox.
- Place heavy-duty grill grates designed for even heat distribution.
- Add any shelves, hooks, thermometers, or other accessories.
- Decorate with stone or tiles if desired.
- Seal any remaining cracks with high-heat caulk.
Conclusion
With proper planning, patience, and adherence to crucial construction steps, you can create an incredible DIY brick BBQ with chimney that will be the centerpiece of outdoor fun for years. Always prioritize safety and consult local building codes. The investment of time and effort is well worth it for the reward of backyard grilling on your own custom BBQ. Fire it up and enjoy!
Frequently Asked Questions
What kind of bricks should be used?
Use high-heat firebricks rated for at least 2000°F for the firebox. Regular clay bricks are fine for the outer structure including the grill and chimney.
What is the ideal height for the chimney?
The chimney should extend at least 3 feet above the highest point of the BBQ. This allows proper draft for air circulation.
Should mortar be used between all bricks?
Yes, mortar should fill any gaps between bricks to seal the structure. Use high-heat mortar rated for exterior use.
How thick should the BBQ walls be?
Firebox walls should be 6-12 inches thick. Grill and chimney walls can be 4 inches thick.
What is the best material for grill grates?
Look for grill grates made from enameled cast iron, stainless steel, or chrome-plated steel for durability and even heating.
How long does it take for mortar and concrete to fully cure?
Allow at least one full week for mortar and concrete to cure before lighting a fire in the BBQ.
What maintenance is required?
Occasional repointing of mortar joints may be needed. Keep chimney capped and clear of debris. Remove ash regularly.