How To Build Outdoor Fireplace Cinder Block

How to Build an Outdoor Fireplace Using Cinder Blocks

Building an outdoor fireplace using cinder blocks is a fun and rewarding project that can be completed in a weekend. With a little planning and preparation, you can create a beautiful and functional focal point for your backyard.

Materials you'll need:

Cinder blocks (approximately 100-120)
Mortar mix
Concrete mix
Steel reinforcement bars (optional)
Gravel
Pavers or flagstone for the hearth
Fire grate

Instructions:

1. Choose a location and prepare the site. The best location for your outdoor fireplace is on a level, well-drained surface away from any trees or other flammable materials. Once you have chosen a location, mark out the area where you will be building the fireplace. 2. Dig a foundation. The foundation of your fireplace should be at least 6 inches deep and extend at least 6 inches beyond the perimeter of the fireplace. Use a shovel or post-hole digger to excavate the foundation. 3. Fill the foundation with gravel. The gravel will help to drain water away from the foundation and prevent it from settling. Fill the foundation with gravel until it is level. 4. Lay the first course of cinder blocks. Start by laying the first course of cinder blocks in a dry-fit to check the size and fit. Then remove the blocks and apply a layer of mortar mix to the foundation. Lay the first course of blocks on the mortar and use a level to ensure that they are level. 5. Continue laying the cinder blocks. Continue laying the cinder blocks, alternating the direction of each course to create a stable structure. Use mortar mix to bond the blocks together and use a level to ensure that each course is level. 6. Add steel reinforcement bars (optional). For added strength, you can add steel reinforcement bars to the fireplace. Lay the reinforcement bars between the courses of cinder blocks and secure them with wire or zip ties. 7. Lay the hearth. The hearth is the area in front of the fireplace where you will place the fire. It is important to use a material that is fire-resistant and durable. Pavers or flagstone are popular choices for hearth materials. 8. Install the fire grate. The fire grate is what will hold the logs in place. Choose a fire grate that is the appropriate size for your fireplace. Place the fire grate in the center of the fireplace and secure it with mortar mix. 9. Allow the fireplace to cure. Allow the fireplace to cure for at least 24 hours before using it. This will give the mortar time to set and the fireplace to strengthen.

Enjoy your new outdoor fireplace!