create your own

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

90
rate or flag this page

By Marye Audet

How to Build an Outdoor Fireplace

Before you begin the research on how to build an outdoor fireplace be sure to check with your city and county to get a list of the different ordinances, codes, permits, and licenses that they have in place. Also be sure to check with your homeowner's insurance company to see if it will require changes to your policy. If you know what to expect ahead of time then you will not get broadsided halfway through your building project by an inspector putting a hold on the work. Some cities have regulations on the type of fireplace you can have, and what fuel can be used, so again, check carefully with your building inspector.


Almost anyone can build an outdoor fireplace. Image:morguefile.com
Almost anyone can build an outdoor fireplace. Image:morguefile.com

Choose a Location Carefully

As you look around your property for a spot to build your fireplace you will want to consider carefully the characteristics of the location you choose. Also call your utilities company to ask about underground pipes and cables on your property.

Your location should:

  • Be a safe distance from your house

  • Be a safe distance from any other buildings; barns, garages, sheds, playhouses, etc.

  • Clear of trees and overhanging vines and branches

  • Level ground

  • Not have any underground wires, cable or pipes

Consider, if you are building on an existing deck, whether or not your deck can support the weight of the fireplace. A wood deck could present a fire hazard, so you may need to cover the area around the fireplace with heatproff masonry. Bbe sure to keep these things in mind, and always double check your plans with your local building inspector.


Image Morguefile.com Be sure that you have all the inspections and permits, and don't cut corners!
Image Morguefile.com Be sure that you have all the inspections and permits, and don't cut corners!

Fireplace Design

How are you going to use your new, outdoor fireplace?

If you will be using it mostly for ambiance, and you don't need the heating aspect, then you can go with a traditional looking, enclosed fireplace, with a chimney and firebox. If you are interested in the warmth as well as the ambiance then an open pit fireplace may be just what you are looking for. Are you going to want to use your fireplace for oudoor cooking? You may need to consider what size grate you will need. Make a list of all of the roles you want your outdoor fireplace to play and try to find a design that fills as many of those desires as possible.

Keep in mind the style of your home's architecture and your own decorating style when you are choosing the look of your new, outdoor fireplace.

Always maintain at least a three foot space between your seating area and the fire no matter what design you use.

Build a Firepit

Another Outdoor Fireplace

How to Build an Outdoor Fireplace Step By Step

No matter which type of outdoor fireplace you are planning on building you will first need to prepare your building site. Remove any plants, vines, trees, or other landscaping features such as wooden fences, trellises and the like. You don't want any fire hazards, and you don't want anything to be in the way of the various structures you may need to build.


Image Morguefile,com A firepit is a simple outdoor fireplace design.
Image Morguefile,com A firepit is a simple outdoor fireplace design.

Two Types of Firepits

A fire pit is very much like a campfire in your backyard. It can be as simple as you like, or you can build seating around it. It is the easiest type of fireplace to build for the do it yourself-er.

You will begin by deciding what diameter you want your fire pit to be. Once you have decided on size drive a stake into the ground in the center of where you want the pit. Attach a cord to the stake and attach a funnel with a small hole to the cord. The cord should be at least two feet long. This will give you a four foot fire pit. Fill the funnel with flour and scribe a circle around the stake, keeping the cord taut. Repeat the process with a cord that is one foot longer. This will give you the area that you will build the walls, which are normally about 12 inches thick.

Remove the grass inside the small circle and dig a one foot deep hole with straight sides. Pour in pea gravel to a depth of four inches. This will help with drainage. Add three inches of sand to the top of the pea gravel to help contain the fire by protecting roots that may be underneath the fire pit.

Dig a four inch deep trench with straight sides in the area between the two circles. Now, building the wall can be accomplished in several ways.

For a Dry Stack Wall

Laying down a layer of cushioning sand to level the area is a good idea whether you are laying loose pavers or making a masonry wall. You can dry stack concrete pavers easily to make the wall. Be sure not to use any adhesives because they could give off toxic fumes when heated.

For a Masonry Wall

For a more permanent structure you can make a rock wall. You will need the following materials:

  • Trowel

  • Mixing tool

  • Iron rake

  • 1/2 inch jointer

  • Chipping hammer

  • Safety glasses

  • Level

  • wheelbarrow to mix concrete in

  • wall stone or heat resistant brick

  • You need stones for the sides of the fire pit as well as "capstones" which are flat to make up the top of the fire pit.

  • Gravel mix concrete

  • 1/4 inch rebar cut into 2 foot pieces

  • Pre-mixed mortar mix

  • Fire bricks
  • Landscaping mesh and crushed stone or gravel or bricks and additional mortar

You will build your fire pit with an inside layer of fire brick to provide a flame retardant wall, and then surround this with face stones, or brick for decorative purposes. After the walls are built the flat capstones will be used to make the top look finished and even. The wall should be no more than 18 inches high.

Take all of your measurements when you go to buy your supplies because the sales people at the home improvement store or quarry will be able to help you figure the amount of stone you will need.

Mix your premix concrete with water, according to instructions on the concrete, in the wheelbarrow until it is a soft, spreadable consistency. Spread it where the base of your wall is going to be, the area between the two circles. Spread the concrete and tamp it down with the rake until it is within an inch or so of ground level. Smooth it carefully with a trowel.

Place the rebar in the wet concrete and tap them in until they are completely covered with concrete. Allow the concrete to set completely.

Mix wheelbarrow of premix mortar, one bag at a time. You do not want it to dry out as you set your stones. Spread the mortar on the outer portion of the concrete base and begin setting the stones. Set the face stones first, on the outer edge, and then come back in and set the fire brick. Continue in this way on each course, setting the facing materials first, and then setting the firebrick.

If you have never done masonry work before you will need to refer to a guide to setting bricks. After you have set the final course, top it with the flat capstones.

How to Cut Flagstone


Image StockXchange (http://www.sxc.hu/home) An outdoor fireplace can look much like a traditional fireplace
Image StockXchange (http://www.sxc.hu/home) An outdoor fireplace can look much like a traditional fireplace

For a Traditional Firebox

A tradtional firebox fireplace that is outdoors looks very much like an inside fireplace. It may have a mantle, hearth, chimney, and other elements of a fireplace except it is outside.

The first thing you need to do when you are about to build a tradtional firebox fireplace is to build a platform for the fireplace with concrete. Make a wooden form the same size as the base of the fireplace that you are planning on building. Prepare the base area with cushioning sand, as in the directions for the fire pit, and then pour the concrete until the platform is the same level as the deck. Allow it to set according to the directions on the concrete mix.

Once the concrete has set go back in and frame in the fireplace area and chimney, double check to see that you have followed any height requirements that the city has specified. Use 2x4s to outline the shape of the chimney, and the fireplace, and cover carefully with plywood. Add the firebox and flu according the manufacturer's instructions.

Complete your fireplace according to your plan by covering it with stucco, a masonry veneer, or your material of choice. While there are many metal fireplaces shown by various companies, masonry should be the first choice for its durability and easy installation. Metal tends to rust and become weak after a few years exposed to the weather.

Make sure that there is at least one inch of non-combustible material between flammable materials and the fire.

If the fireplace is to be brick then no framing is needed. Use firebrick, a heatproof brick, and refractory mortar. Both of these materials are made to withstand the heat from a fire. Regular brick can explode when exposed to high heat, and while regular mortar will work with firebrick, it is not made to withstand the heat, and is therefore less durable than the refractory mortar.

Using a template with a 90 degree angle lay the first course of brick along it on the surface of the platform. Keep the brick squared up and work carefully. Build up the sides, stopping often to check the walls with a level.

There are many companies that carry outdoor fireplace boxes and flu inserts. Some companies have the whole fireplace available in kit form which makes it much simpler to build, since your materials are all ready there. A little research, a bit of note taking, and a weekend or two could give you the outdoor room of your dreams. One the fireplace is in then you will be able to design the area around it, bringing in furniture and other items to make it truly an extension of your home. Knowing how to build an outdoor fireplace is a great skill, and building an outdoor fireplace is a great way to improve the value of your home, and increase the living space.


Image StockXchange (http://www.sxc.hu/home) A Firepit can mimic a camp fire.
Image StockXchange (http://www.sxc.hu/home) A Firepit can mimic a camp fire.

Comments

RSS for comments on this Hub

jonixk profile image

jonixk  says:
2 years ago

great hub this one. I've one outdoor fireplace in my garden and i love it. In summer it's very cool for parties, and in winter it's excellent for warming the garden and we can use the garden that way.

Marye Audet profile image

Marye Audet  says:
2 years ago

J- WHat I want is an outdoor kitchen to go with it!

Zsuzsy Bee profile image

Zsuzsy Bee  says:
2 years ago

Marye! You must be able to read my mind. I want to build an outside oven and BBQ. You've given me some great ideas. Back to the drawing board.

great hub

regards Zsuzsy

Marye Audet profile image

Marye Audet  says:
2 years ago

zSuzy- What I really want is an outdoor wood burnign bread oven, and I am researching that now.. :)

Eileen Hughes profile image

Eileen Hughes  says:
2 years ago

Great hub, where's the spit to go with the pizza one. Great ideas in there for all of us. thanks.

mroconnell profile image

mroconnell  says:
2 years ago

Thanks for compiling all this!

Patty Inglish, MS profile image

Patty Inglish, MS  says:
2 years ago

I wouild LOVE to do this. I may do a small one. Thanks for the directions. :)

stephhicks68 profile image

stephhicks68  says:
2 years ago

Beautiful! I just skimmed the hub now, but this one is off to my husband as well. Thank you!

Angela Harris profile image

Angela Harris  says:
2 years ago

I have wanted to build one for years. The photos have really inspired me. I'm bookmarking this one for future reference. Thanks!

Roger Renwick profile image

Roger Renwick  says:
13 months ago

hi Marye, that is a great hub, i am a jack of all trades (master of none) and got a lot of great ideas for my own outdoor play area. thanks,

roger

johnr54 profile image

johnr54  says:
13 months ago

We've been talking about doing this. I like the look of the built in ones better than the freestanding ones. Good overview.

Clara Ghomes profile image

Clara Ghomes  says:
11 months ago

Great hub. Nice tips to create an outdoor fireplace.

JennifersJumpers profile image

JennifersJumpers  says:
11 months ago

Great hub. Maybe I'll get the guts to try it. Right after I get the guts to install the water fountain that I want.

Wyatt Fleming profile image

Wyatt Fleming  says:
11 months ago

Quite an undertaking. Seems like there is a sense of pride that goes along with renovating a home with the addition of a fireplace. That first fire must warm the heart as well as the feet. The people out there that can't handle the process may find some value in my main interest, portable fireplaces. They may not have the same feel as a natural fireplace but are portable and can be used in rentals. needless to say great hub. thanks

Dolores Monet profile image

Dolores Monet  says:
11 months ago

i've always wanted to build a simple firepit for spring and fall - summer's too durn hot - this great hub is giving me motivation

rugsforall profile image

rugsforall  says:
9 months ago

I love the idea of an outdoor fireplace.

Friends of ours have one they cook pizza on - it is superb.

steveBaxter63 profile image

steveBaxter63  says:
9 months ago

I couldn't agree with you more on checking with local city and county ordinances, codes, permits, and licenses first..

Nice, informative hub - thanks for sharing.

SamSurvivor profile image

SamSurvivor  says:
7 months ago

Wow, the best Hub I've seen on outdoor fireplaces. Heck, it's by far the best article I've read on the subject. Great work! Thanks for sharing.

glassrailing  says:
6 months ago

What a great idea to have an outdoor fireplace by the pool for those cooler evenings... thanks for the Hub and the info on how to DIY...

Premiere Fire Pits  says:
2 months ago

Great guide on building your own outdoor heating area. Any of these would be a wonderful addition to a backyard.

Kathy Shepherd  says:
5 weeks ago

My next home improvement project is to create an outdoor room. I would love to include an outdoor fireplace now. Nice hub.

Submit a Comment
Members and Guests

Sign in or sign up and post using a hubpages account.


optional


  • No HTML is allowed in comments, but URLs will be hyperlinked
  • Comments are not for promoting your hubs or other sites

working