Perhaps the best part of using a pre-engineered masonry fireplace is the unlimited customization options. Each fireplace is unique to each project and vision. And while the exterior finishings like stone veneer and mantles may make the first impression, another important design element is the firebrick, or the interior lining of the firebox.
The firebrick lining is a vital component of any fireplace. A compliant installation will generally require an ASTM C-27 approved firebrick lining of 1 ¼” thick or 2 ½” thick. They are high-temperature refractory bricks that help insulate and protect your fireplace. The 2 ½” thick firebrick is required for the fireplace floor, but either size, 1 ¼” or 2 ½”, is used for the firebox side and backwall.
Thankfully, this installation requirement can also be a fireplace focal point. Different patterns and variations of colors are available to create the perfect centerpiece. It’s important to note that while there are many unique patterns and customization options with regular brick, only compliant patterns should be used.
We’ve listed 5 compliant firebrick patterns used for indoor fireplaces in new construction projects and outdoor living space additions.
Like we mentioned before, firebrick that is 2 ½” thick must be used to line the firebox floor. The same size can be used for the sides and backwall of the firebox if desired. Often, we see the split herringbone option where a typical firebrick is cut to 1 ¼”. This creates a more detailed, handcrafted appearance that sets it apart from the typical herringbone pattern.
In fact, split herringbone has become so popular for FireRock fireplaces, we’ve made split firebricks an available option for our installation kits.
Perhaps the most recognizable brick pattern, the running bond is a traditional and always-popular firebrick application.
Similar to the split herringbone pattern we mentioned above, this pattern continues the same firebrick thickness used on the firebox floor. This gives overall continuity to the firebox from any angle you use to view the fireplace.
Stacked bond (or stack bond - both variations are recognized) is making a comeback in brick patterns. Continuous lines both horizontally and vertically are key features in this firebrick that's growing in popularity.
Here, you can see the stacked bond firebrick pattern used during the installation phase of three fireplaces.
Our 5th option of compliant firebrick patterns is basket weave. This pattern is typically used in homes with rustic, country designs.
