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Dress Up Your Deck With A DIY Gas Fire Pit

Gas fire pits are a newer trend that marry the cozy warmth of a backyard fire with ease and convenience. As much fun as it is to roast marshmallows during a camp-out, let’s face it. It’s also a lot of work.

So instead of spending your time chopping wood, obtaining a fire permit, and struggling to light a fire the old-fashioned way, you can set up your own gas fire pit for backyard campouts at the touch of a button. And while fancy gas fire pits can cost hundreds of dollars, it’s easy to buy an expensive gas fire pit and then create a base or seating around it to create a cozy outdoor space you can use year round.

When we visited a friend who had DIY’d their own backyard gas fire pit, we were immediately inspired, so we got started by checking out some inspiration to help us decide what design we would choose. Here are some we considered:

Table of Contents

The covered fire pit

Image Source: Pinterest

Image Source: Pinterest

The concrete fire pit

Image Source: Man Made DIY

Image Source: Man Made DIY

The all-in-one fire pit

Image Source: Hay Needle

Image Source: Hay Needle

There were so many options, but we knew we wanted something simple and inexpensive that the whole family could enjoy. So when we found a fire pit kit on sale at our local home improvement store, we decided to DIY a custom table for it and transform our deck for lots of summer entertaining. Here’s how we did it!

Supply list:

  • Fire pit kit (this plan uses a circular fire pit)
  • 5 ten-foot x 5 and 1/2, 5/4 inch deck boards
  • 2 ten-foot 1 1/2 x 1 1/2 inch railing balusters
  • 1 3 x 5 cement board
  • 1 box 3-inch exterior screws
  • 1 bottle polyurethane glue
  • 2 1/2 inch by 1 inch x 10 foot cedar
  • Cabinet door magnets
  • 6 ceramic tiles of your choice (optional)
  • Tools needed: drill, nail gun, jig saw, chop saw or saw of your choice, utility knife, tile saw and tiling tools if choosing tiling


Lay out five deck boards for the box’s exterior to determine the width of your box. Next, build two wooden frames with the 1 and 1/2 by 1 and 1/2 balusters to the width.


Cut enough deck boarding to cover each side of the frame. Using these dimensions, you will cut five 24 ” long boards for each side, for a total of twenty.

Next, nail four of the cut deck boards to the corners of each frame, so that one frame is suspended over the other. Work your way around to nail the remaining deck boards in, leaving three boards out of the middle of one side to construct the door.


As you construct the door, be sure to drill a hole on the very edge of the door that is large enough for the propane hose.


Screw the balusters onto the back of deck boards to complete the door. Attach the door with cabinet door magnets.



Cut your cement board to fit the dimensions of the top frame, a 30 x 30 inch square. This should fit flush when set on the top of the fire pit frame. Secure the board with screws and all joints of the frame with the construction glue. Use the base of the fire pit to draw a template to cut out a hole on the cement board. It’s important to make the hole a 1/2 inch smaller in each direction so that fire pit does not fall through. Cut the cement board with a jig saw.


If you want, you can top with tile and grout to give the pit a finished look. Choose any type of tile you want, but keep in mind that the fire will heat whatever material you choose.


When you’ve finished tiling, band the edges with cedar trim to hide the edges of the tile. Let the tile dry overnight, and once you’ve fitted the fire pit into the frame, you’re ready to light a fire! Also be sure to check the manufacturer’s directions on your fire pit for proper handling and placement of the propane tank for your fire pit before you use it.





With just a little bit of elbow grease, you can DIY this simple and inexpensive gas fire pit to transform your deck for a future of  cozy evenings. And don’t forget to bring the marshmallows!


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