How to Build an Outdoor Fireplace?


An outdoor fireplace can be a great addition to your backyard. Not only does it provide a beautiful focal point, but it also allows you to enjoy the outdoors even when it’s cold outside. In this guide, we will walk you through the steps of building your own outdoor fireplace. We’ll answer some common questions and provide helpful tips along the way. So, whether you’re a seasoned builder or a DIY novice, read on for all the information you need to create your very own outdoor fireplace!

Basics of Your Outdoor Fireplace

Before we get into the nitty-gritty of building your outdoor fireplace, let’s go over some basics. First, you’ll need to decide on a spot for your fireplace. It’s important to choose a level area that is at least ten feet away from any structures or flammable materials. Once you’ve found the perfect spot, it’s time to start gathering your supplies.

Basics of Your Outdoor Fireplace

You’ll need bricks or stones for the fireplace itself, as well as mortar and a trowel for construction. For the firebox, you’ll need metal reinforcing mesh and firebrick. And of course, you’ll need wood to burn in your fireplace! If you’re using a gas insert, you’ll also need to purchase the appropriate gas line and fittings.[1]

Codes and Restrictions

Before you start building your own outdoor fireplace, it is important to check with your local building code office to see if there are any restrictions in place that could impact your project.

There are a few reasons why you might need a permit to build an outdoor fireplace. If your fireplace will be attached to your house, you will definitely need a permit. freestanding fireplaces may or may not require a permit depending on their size and location.

It is always better to err on the side of caution and get a permit if you are unsure whether or not you need one. The last thing you want is to have your beautiful new fireplace torn down because it doesn’t meet code![3]

What You’ll Need

Building an outdoor fireplace is a great way to extend the enjoyment of your backyard or patio. There are a few things you’ll need to get started:

  • A level spot for your fireplace. You’ll need enough space for the foundation, plus a few feet on each side for safety.
  • Bricks, stones, or pavers for the foundation and walls. If you’re using bricks, you’ll also need mortar.
  • A metal fire pit insert. This will keep your fire contained and make cleanup easier.
  • Gravel for drainage beneath the fire pit insert.
  • Your choice of fuel: wood, charcoal, or gas. If you’re using wood, you’ll need a way to light it, like lighter fluid or a chimney starter.[1]

Locate the Outdoor Fireplace

The first step is to determine where you want your outdoor fireplace to be located. It’s important to consider things like the proximity to your house, how much sun or shade the area gets, and wind patterns. You’ll also want to make sure there are no overhead obstructions like power lines. Once you’ve selected the perfect spot, it’s time to get started on building your dream outdoor fireplace![1]

Clear and Level the Area for the Pad

The next step is to clear and level the area where you will be building your outdoor fireplace. You will need to excavate a space that is large enough to accommodate the size of your fireplace. Once you have excavated the space, you will need to level it off so that your fireplace is stable.

Clear and Level the Area for the Pad

One way to do this is to use concrete pavers. You can lay the pavers down in a layer of sand, which will help to level off the area and give your fireplace a firm foundation.[1]

Build the Fireplace Pad Form

The first step is to build the fireplace pad form. This will be the foundation for your outdoor fireplace. To do this, you will need to:

  • excavate a hole in the ground that is slightly larger than the size of your fireplace pad form
  • mix concrete and pour it into the hole
  • insert your form into the hole and level it off with a tamper
  • allow the concrete to cure for 24 hours before proceeding to the next step

Pour the Fireplace Pad Concrete

The next step in building your outdoor fireplace is to pour the concrete pad. This will be the foundation for your fireplace, so it’s important to make sure that it’s level and well-secured. To do this, you’ll need to excavate a hole for the pad and then fill it with concrete. Once the concrete has cured, you can then move on to installing the bricks or stone around the perimeter of the pad.

One thing to keep in mind when pouring the concrete is that you’ll need to leave a space for the flu.

The flue is what allows smoke and fumes to escape from the fireplace, so it’s essential that it be installed properly.
You can either purchase a prefabricated flue or build one yourself using bricks or stone.

Allow the Concrete to Cure

After you’ve built your foundation and let it cure, it’s time to start construction on the actual fireplace. If you’re planning on using brick or stone, you’ll need to build a frame out of cinder blocks to support the weight of the materials. Once your frame is in place, you can begin laying the bricks or stones.

Allow the Concrete to Cure

If you want a more traditional look, use mortar between each layer of brick or stone. For a more rustic look, leave the mortar out and simply stack the bricks or stones on top of each other. Remember to use fire-resistant materials when building your outdoor fireplace!

Lay the Veneer Stone

Now that the footing is complete, you can begin to lay the veneer stone. Starting at one end of the fireplace, apply a layer of mortar to the back of each stone and set it in place. Work your way up from the bottom, using larger stones first and then filling in with smaller ones. Be sure to leave a ½-inch gap between each stone for grout.

Once all of the stones are in place, use a level to check that they’re even. If they’re not, you can adjust them by tapping them gently with a mallet until they’re level. Allow the mortar to dry for 24 hours before continuing.[1]

Lay the Fireplace’s Wood Box

One of the first steps in building an outdoor fireplace is creating a wood box. This will serve as the foundation for your fireplace, so it’s important to get it right. The wood box should be made of sturdy materials like brick or stone. It should also be big enough to hold a good amount of wood, so make sure to measure before you start building.

Once you have the materials for your wood box, you’ll need to lay them out in the desired shape. Then, use mortar to attach the pieces together. Make sure that the mortar is dry before moving on to the next step.[1]

Create the Lintel

The lintel is a horizontal beam that supports the bricks above the opening of your fireplace.

It’s important to make sure that the lintel is level so that your fireplace looks symmetrical.
The easiest way to do this is to use a laser level. If you don’t have a laser level, you can use a long level or a string and a plumb bob.

First, mark the position of the lintel on the wall using a pencil. Then, cut two pieces of lumber to the correct length for the lintel. Place these pieces of lumber on either side of the fireplace opening, making sure that they’re level with each other.

Now it’s time to attach the lintel to the wall. To do this, you’ll need to use bricks that are the same size as the ones you’re using for the rest of your fireplace. Place these bricks on top of the lumber, making sure that they’re level with each other.

Then, use mortar to attach the bricks to the wall. Make sure that there is enough mortar between each brick so that they’re securely attached to the wall.

Lay the Hearth Blocks

The first thing you need to do is lay the hearth blocks. You will need to use mortar in between each block. Make sure that the mortar is level as you lay each block. Once the hearth blocks are laid, you can start on the firebox.

Lay the Hearth Blocks

The firebox is going to be made out of cinder blocks. The first thing you need to do is lay out the bottom course of cinder blocks. This should be done on a bed of sand so that it is level and even. Then, you can start stacking the cinder blocks up according to your desired height.

Once you have reached your desired height, you will need to put lintels across the top of the firebox. The lintels will help to support the weight of the bricks that you will be putting on top of the firebox.[1]

Build the Fire Box

The first step is to build the fire box. This will be the foundation of your fireplace and where the fire will actually burn. You’ll want to use bricks, cinder blocks, or stone to build this part of the fireplace. If you’re using bricks, you’ll need to mortar them together. Once you have the basic structure built, you can add a layer of refractory cement to help insulate the fire box and protect it from heat damage.

Once the fire box is built, you’ll need to install a metal grate inside it. This will allow air to circulate around the wood and help keep the fire burning evenly.

Add the Chimney Caps

Now it’s time to add the chimney caps. This will help to keep your fireplace looking great and functioning properly for years to come. Simply place the caps on top of the flue pipe and screw them in place. Make sure that the screws are tight so that they don’t come loose over time.

Now that you know how to build an outdoor fireplace, you can enjoy spending time outdoors with family and friends all year round. Just follow these simple steps and you’ll have a beautiful new addition to your home in no time.[1]

Add the Finishing Touches

Now that you’ve completed the main structure of your outdoor fireplace, it’s time to add the finishing touches. This is where you can really get creative and make your fireplace unique. Here are a few ideas to get you started:

  • Add decorative stones or bricks to the exterior of your fireplace.
  • Paint or stain the wood to match your home’s exterior.
  • Install a gas line if you want to be able to use your fireplace for cooking.
  • Add a chimney cap to keep animals and debris out of your chimney.

Add the Finishing Touches

With these tips, you should be well on your way to having a beautiful and functional outdoor fireplace that will be the envy of all your neighbors.[2]

How to Make an Outdoor Gas Fireplace

While a wood-burning fireplace is the more traditional option, an outdoor gas fireplace has many advantages. For one, you don’t have to worry about storing and chopping wood. And when it comes to cleanliness, gas is the way to go—there’s no messy ashes to deal with. Plus, you can control the flames with a simple switch or remote, making it easy to adjust the mood of your gathering.

If you’re considering an outdoor gas fireplace for your home, here’s what you need to know about how they work and what options are available:

An outdoor gas fireplace burns either natural gas or propane. The fuel is piped in from your home’s main supply or from a large tank that you keep refilled.

A gas fireplace produces heat by igniting the gas and allowing it to burn in a controlled manner. The flames are contained within a firebox, which is usually made of metal or masonry.

Outdoor gas fireplaces come in a variety of styles, from traditional to contemporary. You can also choose from a range of finishes, including brick, stone, stucco, and tile.

When it comes to size, outdoor gas fireplaces range from small models that are perfect for intimate gatherings to large ones that can accommodate up to 50 people.

Most outdoor gas fireplaces come with a control panel that lets you adjust the amount of fuel being used and the intensity of the flames. Some models also come with a remote control, so you can adjust the settings without ever having to leave your seat.

Design Decisions

One of the most important aspects of building an outdoor fireplace is the design. You will need to decide on the size, shape, and materials you want to use. The most important thing is to make sure that your fireplace is safe and will not pose a danger to your home or property.

There are many different ways to build an outdoor fireplace, but one of the most popular is using bricks or stone. This method is very durable and can withstand high temperatures. It is also easy to clean and maintain. Another popular option is using metal, which is also durable and easy to maintain but can be more expensive.[3]

Modern Outdoor Fireplace

Outdoor fireplaces are a great way to enjoy your backyard or patio. They can provide warmth on cool nights, and create a beautiful focal point for your outdoor living space. But before you can start enjoying your new fireplace, you need to build it!

Building an outdoor fireplace is not as difficult as you might think. With a little planning and the right materials, you can have your own fireplace up and running in no time. In this guide, we’ll show you how to build an outdoor fireplace step-by-step.[4]

Backyard Fireplace

If you’re planning on adding a backyard fireplace to your home, there are a few things you’ll need to take into account. First, you’ll need to determine the purpose of the fireplace. Are you looking to add ambiance to your outdoor space? Or do you want something that will provide warmth and function as well?

Backyard Fireplace

Once you’ve decided on the purpose of your fireplace, it’s time to start thinking about design. What kind of materials do you want to use? Stone? Brick? Concrete? There are many options available, so it’s important to do some research and find the right one for your needs.

It’s also important to consider the size of your fireplace. How big do you want it to be? Do you want it to be the focal point of your outdoor space, or do you want it to be more subtle?

Once you’ve determined the purpose and design of your fireplace, it’s time to start thinking about construction. If you’re not familiar with construction, it’s important to consult with a professional before starting any project. They can help you determine the best way to build your fireplace, as well as what materials you’ll need.[4]

How to Build an Outdoor Fireplace: Step-by-Step Guide

If you’re planning to create an outdoor fireplace, follow this comprehensive step-by-step guide. The table provides detailed instructions, materials, estimated time, and level of difficulty for each step.

Step Task Materials Needed Estimated Time Difficulty Level
Step 1 Choose a location Measure tape, stakes, string 1 hour Easy
Step 2 Create a foundation Concrete blocks, mortar, trowel 2 days Moderate
Step 3 Build the firebox Firebrick, refractory mortar 2 days Moderate
Step 4 Construct the chimney Chimney blocks, flue liner 2 days Moderate
Step 5 Install a fire grate Steel grate 2 hours Easy
Step 6 Finish with stone or stucco Natural stone veneer, stucco mix 3 days Moderate
Step 7 Add a fire screen and accessories Fire screen, fireplace tools 2 hours Easy
Step 8 Light the first fire Firewood, fire starter 30 minutes Easy

Explanation of the Table:

This table provides a detailed step-by-step guide for building an outdoor fireplace. It includes information on the tasks to be completed, materials needed, estimated time for each step, and the difficulty level, helping you plan and execute your outdoor project effectively.


What do you need to build an outdoor fireplace?

Building an outdoor fireplace requires a few materials. You will need bricks, mortar, a metal firebox, and a chimney kit. You may also need gravel and sand to level the area where you will build your fireplace.

You will also need some tools to build your fireplace. A hammer, chisel, and trowel will be needed to lay the brick. A drill is necessary to attach the firebox to the bricks. And finally, a ladder will be helpful to reach the top of the chimney when you are ready to install it.

Can you build an outdoor fireplace with concrete?

Yes, you can build an outdoor fireplace with concrete. Concrete is a durable material that can withstand high temperatures, making it ideal for an outdoor fireplace. Plus, concrete is easy to work with and mold into the desired shape. However, keep in mind that concrete is a heavy material, so you’ll need help lifting and maneuvering it into place.

If you’re looking for a more traditional look for your outdoor fireplace, brick is another option. Brick is also durable and heat-resistant, plus it has a classic appearance that will complement any home’s style. However, bricks can be expensive and difficult to find if you don’t live near a brickyard.

How thick should a concrete slab be for an outdoor fireplace?

A concrete slab for an outdoor fireplace should be at least four inches thick. If you’re using cinder blocks, they should be eight inches wide by 16 inches tall. The firebox itself should be made of fire-resistant materials such as refractory brick or stone. mortar.

You’ll also need a metal grate to support the wood burning in your fireplace. This can be placed on top of the cinder block foundation or built into the walls of the firebox. Be sure to leave plenty of space around the grate for air to circulate and keep the fire burning evenly.

Can cinder blocks withstand heat?

Cinder blocks are made of concrete and they are designed to withstand high temperatures. However, you should avoid using cinder blocks for an outdoor fireplace because they can absorb moisture and crack over time.

What is the difference between a cinder block and a concrete block?

When it comes to choosing between cinder block and concrete block for your outdoor fireplace, it really comes down to personal preference. Cinder blocks are typically made from a mix of concrete and coal ash, while concrete blocks are made from 100% concrete.

Some people prefer cinder blocks because they are lighter in weight and easier to work with. Others prefer concrete blocks because they feel that they are more durable and will last longer. Ultimately, the decision is up to you!

If you do decide to use cinder blocks, be sure to purchase ones that are specifically designed for outdoor use. These types of blocks will have a waterproof coating that will help protect them from the elements.

Do I need a metal ring for a fire pit?

No, you don’t need a metal ring for a fire pit. You can build one without a metal ring, but it’s not recommended. A metal ring will help contain the fire and prevent it from spreading.

If you’re planning on building a fire pit, check with your local city or county regulations first. Some areas have restrictions on open fires.

What are the key design considerations before starting the construction of an outdoor fireplace?

Before building an outdoor fireplace, you should consider factors such as the location, local building codes, materials, and the type of fuel (wood, gas, or electric) you plan to use. Design your fireplace to complement your outdoor space and ensure it meets safety regulations.

What are the essential steps for building the foundation of an outdoor fireplace?

Building a solid foundation for your outdoor fireplace is crucial. Start by excavating the area, then pour a concrete footing or slab, depending on the size and weight of your fireplace. Install a fireproof and frost-resistant material, such as firebrick or refractory cement, on top of the foundation to create a suitable base for the fireplace.

Can you explain the process of constructing the firebox and chimney for an outdoor fireplace?

The firebox and chimney are central components of an outdoor fireplace. Build the firebox using fire-resistant materials, like firebrick or refractory panels, and shape it to your desired dimensions. Construct the chimney above the firebox, ensuring it’s tall enough for proper draft and to carry smoke away from your seating area.

What’s the best way to choose suitable materials for the exterior finish of an outdoor fireplace?

Selecting materials for the exterior finish of your outdoor fireplace depends on your design preferences. Common options include stone veneer, brick, stucco, or even outdoor-rated tiles. Choose materials that can withstand outdoor weather conditions and enhance the overall aesthetic of your space.

How do you plan the airflow and ventilation for an outdoor fireplace to ensure it burns efficiently and safely?

Efficient airflow and ventilation are essential for outdoor fireplace safety. Incorporate vents and a chimney cap to prevent downdrafts and encourage proper airflow. Ensure your fireplace is designed to draw in enough oxygen for combustion and to expel smoke and gases effectively.

Can you provide guidance on the installation of the firebox components, such as the firebrick or refractory panels?

When installing the firebox components, follow the manufacturer’s instructions and use the appropriate refractory mortar. Lay the firebrick or refractory panels in a staggered pattern, starting from the bottom and working your way up. Ensure that all joints are well-sealed to withstand the high temperatures generated by the fire.

Are there safety measures or regulations to consider when building an outdoor fireplace, especially regarding the distance from structures or trees?

Safety is a top priority when building an outdoor fireplace. Be aware of local building codes and regulations that may dictate the distance your fireplace must be from structures and trees. Always maintain a safe clearance to prevent fires and ensure your fireplace is well-ventilated.

How do you design the seating and outdoor space around the fireplace for a comfortable and functional outdoor living area?

Designing the seating and outdoor space around the fireplace should consider functionality and aesthetics. Arrange seating to provide a clear view of the fire while maintaining a safe distance. Incorporate features like fireproof seating, patio furniture, and outdoor lighting to create an inviting and comfortable atmosphere.

Useful Video: How To Build An Outdoor Fireplace In 20 Minutes | DIY


Building an outdoor fireplace is a great way to extend the use of your backyard. With a little planning and the right materials, you can build a beautiful and functional fireplace that will be the centerpiece of your outdoor living space.

If you have any questions, feel free to leave them in the comments below. And if you build an outdoor fireplace, be sure to share it with us! We’d love to see it. Happy building!