Building a brick arched BBQ/fireplace is a rewarding project that combines functionality with aesthetic appeal. This guide will walk you through the process, ensuring you have a solid understanding of each step required to complete your project. The key steps include laying a foundation, constructing walls and the opening, building the arch, lining the interior, adding a chimney, and finishing touches. Each section will provide detailed instructions and tips to ensure your project is both safe and effective.
Foundations
The first step in building your brick arched BBQ is to lay a solid foundation. Begin by digging a pit that is 150mm wider and longer than the footprint of your structure. Fill this pit with concrete, ensuring it is level and compacted. Once the concrete has set, lay engineering bricks followed by reclaimed bricks. Use mortar and rubble to ensure stability. The foundation should be strong enough to support the weight of the bricks and any additional weight from cooking materials.
Walls & Opening
Next, you will construct the walls of your BBQ. Leave a 2-brick gap for the fireplace opening. This gap will be used to install a steel guard at the bottom of the BBQ. The steel guard should be painted with high-temperature BBQ paint to prevent rusting. Cutting bricks can be done with a bolster chisel and lump hammer, followed by cleanup with an angle grinder. This ensures a clean and precise cut.
Arch Construction
Building the arch is one of the most critical steps in this project. Start by creating an arch former using 18mm ply. The rise of the arch should be at least 1/8 the span. For example, if the span is 450mm, the rise should be at least 57mm. Decorative bricks can be used as keystones, and these should be cut with an angle grinder. Allow the mortar to set before removing the former. This ensures the arch is strong and secure.
Interior Lining
The interior of your BBQ should be lined with fire bricks. These bricks are specifically designed to withstand high temperatures and are essential for the longevity of your BBQ. Use a hand saw to cut the fire bricks to the correct size. Creating shelves by laying bricks on edge can provide additional storage space. To cure the fire cement, start with a small fire. This process allows the mortar to set properly and ensures the bricks are ready for use.
Chimney
Adding a chimney to your BBQ is optional but highly recommended. A reclaimed chimney pot can be used, and it should be leveled with mortar and brick slivers. Secure the chimney with a stiff mortar mix to prevent it from falling off. This ensures proper ventilation and smoke extraction.
Finishing Touches
The final step is to add finishing touches to your BBQ. Install cast iron brackets for grills and a wooden shelf. These additions can enhance the functionality of your BBQ. Remember that fire bricks retain heat efficiently, requiring minimal charcoal for cooking. This feature makes your BBQ both energy-efficient and practical.
Common Mistakes
Avoid common mistakes such as using the wrong type of mortar or bricks. Ensure you use fire bricks for the interior lining and engineering bricks for the foundation. Incorrect materials can lead to structural failure or reduced cooking efficiency. Additionally, ensure the arch is properly formed and the steel guard is securely installed to prevent accidents.
Practical Tips
Start with a detailed plan and gather all necessary tools before beginning your project. Tools required include a pointing trowel, brick hammer, angle grinder, spirit level, cordless drill, and mixing buckets. The cost of materials can be minimal, with four cans of beer and a bottle of brandy being sufficient for this project. This DIY guide not only saves money but also provides a unique and functional addition to your outdoor space.
In conclusion, building a brick arched BBQ is a project that requires careful planning and execution. By following the steps outlined in this guide, you can create a safe and efficient cooking space that enhances your outdoor living area. The use of fire bricks and proper construction techniques ensures longevity and efficiency, making this project both practical and rewarding.