Standard Fireplace Kits

Our Ashford small fireplace kit is designed for small lots in metropolitan and suburban areas and small garden spaces. Wood storage included.

Ashford Small Fireplace Kit

Luxury Small Fireplace with Firewood Storage Included

Our Ashford small fireplace kit is designed for small lots in metropolitan and suburban areas and small garden spaces. Wood storage included.

Barrington Fireplace for decks Hero

Barrington Fireplace for Deck

Flush Mount Fireplace for Raised Decks and Patios

Looking for a fireplace to update your deck? Our flush-mount fireplace is specifically built for a raised deck or patio.

DIY stone outdoor fireplace kit loaded bremley

Bremley Outdoor Fireplace Kit

Upscale design will update your patio space

Updated and upscale, the Bremley fireplace, is a premium outdoor kit. This wood-burning DIY kit is large and includes everything you need.

Barrington-Deluxe-Estate-in full glory

Barrington Outdoor Fireplace Kit

Barrington is a traditional stone-look fireplace that will add value to your home.

Our most classic design, the Barrington fireplace, is a premium outdoor kit. Anyone can quickly build this wood-burning stone look kit.

Bremley TV-Deluxe-Estate Fireplace kit

Bremley TV Fireplace Kit

Put the big game at the center of your outdoor living space

Our Bremley TV fireplace allows you to add a TV mounting option to your Bremley fireplace and easily mount a 55' TV and sound bar.

We offer several wood-burning fireplaces to fit your patio

Do you love the crackle and warmth of a real wood fire? Are you looking to add a wood-burning hardscape feature to our backyard? You have come to the right place. Cornerstone offers everything you need to turn your boring backyard into the envy of the neighborhood. Are you looking for something traditional? Our Barrington fireplace kit is at home in any decor. Perhaps you want a more modern fireplace. Check out our Bremley outdoor fireplace. Do you want something more upscale to raise your home’s value? Try adding options and upgrades to your fireplace kit. We even have specialized kits for mounting TVs or building next to a raised deck.

See-Through Fireplace Kits are also Available

Cutaway detail of our standard firebox

Our fireplace kits have large firebrick-lined fireboxes

Our luxury fireplace kits have large lined fireboxes. Our firebox is larger than you will find on most other brands’ kits. Yet the size of the firebox, the opening, and the smoke chamber and chimney have been designed to draft well and offer decades of hassle-free use.

Though our fireplaces are designed for burning wood, you can always add a gas-fired log set if you please. Check out the diagram for the firebox dimensions. You can always download our dimensions and planning guides for more detailed information.

DIY Outdoor Fireplace kits come with these Features

Your fireplace kit has been designed up to a standard of excellence and safety. We don’t design down to a price point. From heavy angle irons, deep mantels and hearths, and stone appearance, see what is included in our kits that other companies skimp on or charge more for.


Stainless Steel Spark Arrestor

Stainless Steel Spark Arrestor

Your safety is our top priority. Therefore, we include a spark arrestor with every kit. This addition will help prevent wildfires. It is much safer than a 100-plus pound stone found on other kits.

Large Mantel

Can you believe some brands charge over a thousand bucks for a hearth? Of course, our hearth comes included. Per best practices, we design all our fireplaces with a 14-16″ hearth for safety.

Standard Fireplace Hearth
Firebrick lined firebox

Firebrick Lined Firebox

Our wide firebox dimensions help produce great draft and heating efficiency. The opening is wide to allow ample room for your fire while not being overly wide and inefficient. Fire brick lined for heat retention and longevity.

Easy to Build

Our Fireplace kits are designed to be assembled in a few hours using our unique building system. The pieces are relatively small, and the instructions are simple to follow. You simply stack and glue the pieces together. No cutting blocks. No mixing mortar. No mess.

Our kits are easy to build for beginners with no heavy lifting

Our complete building system gets results fast and easy


Designed to make kits easily

These blocks were specially designed to make hardscape features. These are not repurposed retaining wall blocks. This produces easy-to-make kits that save time. The wedge shapes help increase the bonding ability for a solid product built to last.

Random stone look

Our stones are produced with through-body colored concrete. Then they are tumbled to give them a naturally aged look. The three sizes of block can create seven different face sizes creating the randomly laid appearance of natural stones.

No mortar needed

There is no mess and mixing of mortar. Our kits are simply glued together. You squeeze special adhesive from a caulk gun. This makes construction and cleanup a breeze.

You have options when designing your see-through fireplace


Choose from two stone-colored blends

Castle-Gray Blend Outdoor kit color swatch

Castle Gray Blend

Cottage Buff Blend

Don't forget to customize your fireplace kit with add-on options

Create the perfect setting for your outdoor paradise. No two backyards are identical. And no two families' needs are the same. That is why we offer you tons of add-ons and options for you to configure your ultimate fireplace. All options are super simple to build and come with step-by-step instructions. Choose from these options or many more.

Chimney Extensions

Chimney Extensions

Add chimney extensions in 24" tall sections up to a max of 48" extra height.

Estate Wing Walls

Seat walls add a crucial seating and border wall to your space.

Masterson-G Grill station with 32

Masterson Grill Stations

Create a Fireplace with Attached Grill Station

Masterson DC Grill Station on Barrington Fireplace

Masterson-DC Stone BBQ Grill Station

Add a sweet Grill Dome kamado grill station to your fireplace

Masterson-G Grill station with 32

Masterson-GC Stone BBQ Grill Station

Host a Party with this killer BBQ grill station add-on.

Masterson-KC Grill station with 32

Masterson-KC Stone BBQ Grill Station

Fireplace addition with BBQ grill and kamado smoker

Masterson OC grill station with Summerset Grill and Pizza Oven

Masterson-OC Stone BBQ Grill Station

Make yours a Fireplace with Pizza Oven and Grill

Masterson-VC Grill station with Summerset outdoor gas Pizza Oven

Masterson-VC Stone Pizza Oven Station

Add a Pizza Oven to your Fireplace

Firebox with Deluxe wood boxes option in cottage buff

Wood Storage Box

Add function to your fireplace with firewood storage additions.

You can build our kits. Jake walks you through every step.

View our YouTube channel for How-To videos

You will learn what to expect when building this project yourself. All of Jake’s kits are perfect for installers or DIYers. You don’t need any special skills or tools. All the pieces you need are included in your kit. There is no cutting or mortaring the blocks. You simply stack and glue the block together.

Customer Gallery

If these people built it, YOU can too!