
Polycor U
How to Build a Round Granite Firepit
Firepits are a fantastic way to add instant appeal to any outdoor living space, creating a cozy nook for gatherings or quiet contemplation, but are also a feature that lets you enjoy relaxing in the great outdoors beyond the summer season.
Course Description
While brick and precast may be typical fire pit options, there are several reasons to go with granite instead. Unlike brick and concrete, granite blocks are naturally durable and will withstand the freeze-thaw cycles of colder climates, have greater density and can withstand the demands of ongoing direct contact with high heat. They are also maintenance-free. This DIY firepit kit is made from 7″ thick blocks of solid cut granite, so there are far less pieces required than with a brick or concrete fire pit. Also, no mortar or adhesive is required, but can be used if desired – the blocks themselves are heavy enough to be dry-stacked with their own weight holding them tight together. Less stone, less time, and best of all, less work for you!
Installing a Granite Firepit Kit for Instant Outdoor Entertainment
Firepits are a fantastic way to add instant appeal to any outdoor living space, creating a cozy nook for gatherings or quiet contemplation while extending your outdoor season well beyond summer. These versatile features transform ordinary patios into inviting entertainment areas where families and friends can gather around flickering flames, sharing stories and creating memories that last a lifetime.
With Polycor’s easy-to-assemble granite firepit kit, you can create an instant entertaining space in just one afternoon. The precision-engineered components eliminate guesswork while ensuring professional results that rival custom masonry installations costing thousands more. In this comprehensive guide, we’ll demonstrate how to easily install a Woodbury Gray™ granite 48″ diameter, two-tier firepit so you can lay it out in the morning and be roasting s’mores by dark.
Premium Woodbury Gray Granite
Polycor’s firepit kits feature premium Woodbury Gray™ granite blocks that provide exceptional durability and sophisticated appearance. This fine-grained granite offers consistent color and texture while withstanding the extreme temperature variations that firepit applications demand. Unlike manufactured firepit materials that can crack or deteriorate under heat stress, natural granite actually improves with age, developing rich patina through use.
The 48″ diameter provides the ideal size for most residential applications – large enough to accommodate 6-8 people comfortably while remaining proportionate to typical patio spaces. The two-tier design creates visual interest and provides wind protection for better fire performance, while the substantial granite construction ensures decades of reliable service.
Each kit includes precisely cut blocks that fit together seamlessly, eliminating the cutting and fitting required with custom masonry installations. This precision manufacturing allows DIY installation while ensuring professional-quality results that enhance property value and outdoor enjoyment.
Flexible Installation Options
For this project, the firepit is being installed over an existing granite paver patio, but firepits can be installed directly on the ground as well, providing flexibility for various landscape situations. This adaptability makes granite firepit kits suitable for both established outdoor spaces and new landscape development.
When installing over existing hardscape, the firepit becomes an integrated part of your outdoor living system. When installing on natural ground, the firepit can serve as an anchor point around which other landscape features develop over time.
Critical Safety Considerations and Base Preparation
Begin by marking an area approximately 4’6″ in diameter to provide adequate clearance around the firepit perimeter. Safety clearances are essential for preventing heat damage to surrounding materials and ensuring safe access around the firepit during use.
Dry lay the first course of blocks and trace the edges onto the paver surface. This template ensures accurate cutting and proper fit while minimizing waste and rework.
The base material of this patio uses a high-density foam panel called EZ Base that replaces traditional compacted aggregate-base installations. While EZ Base provides excellent support for most hardscape applications and offers significant labor savings, it should not be in direct contact with open flames due to its synthetic composition.
If installing a firepit on top of existing paving, always verify that the base material underneath is non-combustible. This verification is crucial for fire safety and local code compliance, as combustible base materials can create serious fire hazards.
Precision Cutting and Base Modification
Use a 7″ grinder equipped with a diamond blade to cut out the marked pavers with precision. Diamond blades provide clean cuts in granite while minimizing chipping that could compromise the finished appearance. Always wear appropriate safety equipment including eye protection and dust masks when cutting stone.
Cut away the EZ Base foam carefully, preserving the sand bed below. This sand layer provides the stable, level foundation needed for proper firepit installation. The sand also provides drainage and accommodates minor settling without affecting the firepit structure.
If installing the firepit directly on ground rather than over existing paving, dig a hole 6″ deep and fill with process gravel or mason sand, compacting the material until level. This excavated foundation provides the same stable base as the preserved sand bed, ensuring long-term performance and preventing settling.
Strategic Block Selection and Preparation
Sort through all blocks to choose the 16 pieces for the top course that match thickness as closely as possible. As blocks are cut from natural stone, there will be slight variations in thickness – this natural characteristic adds authenticity while requiring thoughtful selection for best results.
These thickness variations can be accommodated in the first course by adjusting the sand or gravel bed to make the tops level. Take time during this selection process, as the top course is most visible and determines the overall appearance of your finished firepit.
Natural stone variations are part of the authentic beauty that distinguishes genuine granite from manufactured alternatives. Embrace these subtle differences while using them strategically to create the most attractive final installation.
Professional Installation Technique
Lay the first course of blocks ensuring they fit tightly together and remain perfectly level throughout the circumference. Use a level frequently to check both individual blocks and the overall course, making adjustments to the sand bed as needed.
Gaps between blocks allow heat to escape and can create structural weak points, so achieving tight fits is crucial for both performance and appearance. The precision cutting of kit components makes this easier than custom-cut installations, but attention to detail remains important.
Follow with the second course of blocks, carefully overlapping the joints to create a running bond pattern. This overlap provides structural strength while creating the traditional masonry appearance that distinguishes quality installations.
Final Assembly and Quality Control
Test fit the metal ring to ensure adequate clearance before final assembly. The fire ring should fit comfortably within the firepit opening without binding or creating tight spots that could cause thermal expansion problems.
Remove the test ring and apply landscape adhesive to secure the top course to the course below. Here, Structure Bond polyurethane adhesive provides super-strength bonding that replaces traditional mortars while bonding blocks in just 8 minutes.
This advanced adhesive technology allows rapid completion while providing superior bond strength compared to traditional masonry methods. The fast cure time means you can complete installation and begin enjoying your firepit the same day.
Apply adhesive according to manufacturer instructions, ensuring complete coverage while avoiding excess that could squeeze out and compromise appearance. Work efficiently since the 8-minute cure time requires prompt positioning.
Immediate Enjoyment and Long-Term Value
All that’s left is to light a fire and enjoy your quality firepit from Polycor Hardscapes & Masonry. The combination of premium materials, precision manufacturing, and straightforward installation creates an outdoor feature that provides immediate enjoyment while adding substantial value to your property.
Unlike portable firepit alternatives that may rust, crack, or deteriorate over time, your granite firepit represents a permanent landscape improvement that will be enjoyed for generations. The natural stone construction requires no maintenance while improving with age, developing character through use that adds to its authentic appeal.
From intimate family gatherings to larger social events, your new granite firepit creates the perfect focal point for outdoor entertainment. The substantial construction and professional appearance elevate any outdoor space while providing the warmth and ambiance that make outdoor living truly exceptional throughout the extended season.