Building Outdoor Fireplace With Cinder Blocks

Building an Outdoor Fireplace with Cinder Blocks: A Step-by-Step Guide

Creating an outdoor fireplace is an excellent way to enhance your backyard and enjoy cozy evenings with family and friends. While constructing one may seem daunting, it is a feasible project with proper planning and execution. One cost-effective and durable option is to build an outdoor fireplace using cinder blocks.

Materials Required:

* Cinder blocks (approximately 80-100) * Mortar mix * Rebar * Fire bricks * Fire pit grate * Concrete pavers or slabs (for base and hearth) * Shovel * Level * Trowel * Rubber mallet * Safety gear (gloves, eye protection)

Step 1: Plan and Prepare

* Choose a suitable location away from flammable materials and structures. * Mark the perimeter of the fireplace base and hearth, ensuring it is level. * Excavate the area to a depth of 6 inches for the base and 4 inches for the hearth.

Step 2: Lay the Base

* Install a layer of concrete pavers or slabs as the base. * Use a level to ensure the base is flat and sturdy.

Step 3: Build the Hearth

* Place a layer of fire bricks on top of the base to create the hearth. * Use mortar mix to seal the joints between the bricks.

Step 4: Construct the Cinder Block Walls

* Start by laying a row of cinder blocks around the perimeter of the hearth. * Use a level to ensure the blocks are aligned and straight. * Alternate the direction of the blocks in each layer to create a stable structure. * Reinforce the walls with rebar every few layers for added strength.

Step 5: Form the Firebox

* Create a rectangular or square opening in one of the walls for the firebox. * Line the interior of the firebox with fire bricks. * Install the fire pit grate inside the firebox.

Step 6: Create the Chimney

* Continue building the cinder block walls above the firebox to form the chimney. * Narrow the width of the chimney slightly as you build upwards. * Cap the chimney with a concrete or metal top to prevent rain and debris from entering.

Step 7: Finish and Cure

* Apply a thin layer of mortar over the exterior of the cinder blocks to seal and smooth the surface. * Allow the mortar to cure for several days before using the fireplace.

Tips:

* Use a high-temperature mortar mix designed for outdoor fireplaces. * Keep the mortar joints thin and evenly distributed. * Tap the cinder blocks into place with a rubber mallet to ensure they are securely seated. * Let the fireplace cure for an extended period before burning a fire in it. * Regularly inspect and clean the fireplace for safety and maintenance.