Diy Outdoor Fireplace Using Cinder Blocks

Building a DIY Outdoor Fireplace with Cinder Blocks

Creating a cozy outdoor living space often involves adding a fire feature, and a fireplace is a popular choice. While professionally built fireplaces can be expensive, a DIY approach using readily available cinder blocks offers a budget-friendly and achievable solution. This article will guide you through the process of constructing a sturdy and functional outdoor fireplace using cinder blocks.

Planning and Preparation

Before embarking on the construction, careful planning is essential. Define the desired size and shape of your fireplace, ensuring it complements the surrounding area. Consider the location, taking into account factors like proximity to structures, wind patterns, and potential fire hazards. Obtain any necessary permits from your local authorities.

Gather the necessary materials, including cinder blocks, mortar mix, a fire grate, a level, a trowel, a tape measure, safety goggles, work gloves, and a masonry brush. While cinder blocks are readily available, consider using fire-rated blocks for added safety.

Construction Process

Laying the foundation is the first step. Dig a hole that is slightly larger than the base of your fireplace, ensuring a level surface. Pour a layer of gravel for drainage, followed by a concrete foundation that is at least four inches thick. Allow the concrete to cure fully before proceeding.

Start building the firebox using cinder blocks, carefully laying them with mortar. Ensure each block is level and that the corners are square. Build up the walls to the desired height, leaving an opening for the fire grate. Remember that the firebox should be slightly smaller than the exterior of the fireplace, as this will create a space for the chimney.

Construct the chimney using cinder blocks, stacking them above the firebox to form a vertical shaft. The chimney should extend at least three feet above the roofline of any nearby structure to ensure adequate draft. Use mortar to secure the blocks and create a smooth, sealed surface for the chimney.

Finishing Touches

Once the structure is complete, allow the mortar to cure for a few days before finishing. You can create a smooth, polished look by applying a thin layer of mortar to the exterior faces of the blocks, smoothing it with a trowel. Allow the mortar to dry completely before painting or staining the fireplace to match your outdoor decor.

Install the fire grate in the firebox, making sure it is centered and level. This grate will hold the firewood above the combustion chamber, allowing for efficient burning. For added safety, consider installing a spark screen or mesh screen to prevent embers from escaping.

Finally, consider adding decorative elements like a stone or brick facade, a mantelpiece, or a surround to personalize your fireplace. You can also incorporate lighting features, such as sconces or lanterns, to add ambiance to your outdoor space.