How To Build A Outdoor Fireplace With Cinder Blocks

How to Build an Outdoor Fireplace with Cinder Blocks: A Step-by-Step Guide

Building an outdoor fireplace with cinder blocks is a rewarding project that can transform your backyard into a cozy and inviting gathering space. Here's a comprehensive guide to help you create a stunning and functional fireplace.

Step 1: Planning and Materials

Plan the size and shape of your fireplace, considering the available space and your needs. Gather the necessary materials, including cinder blocks, mortar, sand, gravel, firebrick, fireclay, and expansion joints.

Step 2: Prepare the Foundation

Excavate an area for the foundation, ensuring it's level and slightly larger than the fireplace base. Fill the excavation with gravel and compact it to create a stable base.

Step 3: Lay the First Layer

Lay a layer of cinder blocks around the perimeter of the foundation, setting them level with a spirit level. Fill the center of the base with gravel to create a firebox.

Step 4: Build the Walls

Continue stacking cinder blocks to build the walls of the fireplace. Maintain a staggered pattern and use mortar between the blocks. Insert expansion joints every few rows to allow for movement during temperature changes.

Step 5: Create the Firebox

Line the firebox with firebrick, using fireclay to seal the joints. Build a raised hearth within the firebox using more cinder blocks or firebrick.

Step 6: Form the Chimney

Build the chimney by stacking cinder blocks and tapering the sides towards the top. Use mortar to secure the blocks and insert a flue liner to vent smoke and gases.

Step 7: Finishing Touches

Once the fireplace is complete, add a cap or chimney top to protect it from the elements. Cover the exterior surface with stucco or a suitable outdoor finish.

Tips:

* Use high-quality mortar specifically designed for outdoor use. * Reinforce the fireplace with rebar or wire mesh if necessary. * Allow the mortar to cure for the recommended time before using the fireplace. * Regularly clean and maintain the fireplace to ensure its longevity. * Enjoy countless cozy evenings by the warmth of your custom-built outdoor fireplace.