Around a fireplace, you must use a non-combustible backer board, such as cement board or fiber cement board (e.g., HardieBacker, PermaBASE). Never use standard drywall, as the paper facing and gypsum core are flammable and will break down under high heat.
Typically, fireplaces require steel framing and cement/concrete board when building within the unit's clearance to combustibles. To finish the fireplace typically stone, tile or other non-combustible material is used to surround the face of the fireplace and provide the finished look.
The best material for a fireplace surround depends on your heat tolerance and style. Granite and quartzite are the top choices for durability, porcelain is ideal for modern, seamless designs, and marble offers timeless elegance. Always ensure the material is non-combustible.
Yes, Hardie® Backer Board can be used as a fireplace facing. 1/4'' Hardie® Backer Board can be used as a component in a 1-hour fire resistive construction when installed in compliance with National Evaluation Report NER-405. Hardie® backer boards are recognized as non-combustible, when tested according to ASTM E 136.
Can it be used on a fireplace project? GoBoard passes ASTM E-84 testing per IBC requirements. GoBoard is polyisocyanurate foam and will not melt and flow. The maximum surface exposure temperature is 250° F.
While cement board is non-combustible, drywall is not. Standard 1/2-inch drywall can typically resist fire for about 30 minutes, while specialized Type X drywall might last up to an hour. In contrast, a properly installed cement board is part of an assembly that can achieve a one- to two-hour fire rating.
A non-combustible fireplace surround is a safety necessity, primarily consisting of masonry, cement-based, or metal materials that won't ignite or burn at high temperatures. These include natural stones (marble, granite, slate), metal (steel, cast iron), concrete, and tile.
The H5 fireplace requires a 1/2” (13mm) thick non- combustible cement board or equivalent, to be used as a wall surface immediately above the unit—see diagram for minimum coverage. Extending the cement board well beyond the minimum shown will help avoid cracking due to differential expansion of materials.
Hardie board (fiber cement siding) has a Class A fire rating (the highest available) and is classified as a non-combustible material. It will not ignite when exposed to direct flames and will not contribute fuel to a fire, making it a highly effective protective barrier in fire-prone or wildfire-risk areas.
Building code requires all combustible materials (like wood framing or mantels) to remain a safe distance from the firebox. Tile itself is non-combustible, but local building departments dictate specific clearances, backing materials, and adhesive types to ensure fire safety.
Transform your fireplace wall into a stunning focal point with a tailored design. Create depth using Stikwood wood planks, Heat & Glo dark accent paint, or Michaels modern accent panels. Elevate the look with Wayfair metal wall art or a gallery system.
Stone. Stone is a classic, widely used material for fireplace surrounds because it's beautiful and withstands high temperatures. Marble, granite, and slate are popular options, each offering unique textures, colors, and patterns that can give the room a rustic charm.
Best Wood for Fireplace Mantel: FAQs
If you want something classic and durable, oak is a fantastic choice: strong, beautiful, and easy to stain. For a modern, high-end look, walnut adds rich, dark tones that instantly elevate a room.
Calcium Silicate Boards – Highly heat resistant (up to 1100°C+), non combustible, and durable, making them ideal for direct contact with stove flames.
Explained, the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet. The portion of the rule stating the pipe needs to be 2 feet above anything within 10 feet is where most people get confused.
Yes, Durock cement board is highly fire-resistant and classified as noncombustible. Because it will not burn or contribute fuel to a fire, it is frequently used to protect combustible walls, build custom fire-rated assemblies, and frame fireplace surrounds.
The best tile for a fireplace surround is porcelain for its high heat resistance, extreme durability, and virtually unlimited design versatility. However, the ideal choice depends on your aesthetic; natural stone (marble, slate, travertine) provides a luxurious classic look, while ceramic offers budget-friendly charm.
PermaBASE® Cement Board offers a simpler, cleaner way to install fireplace insert surrounds that saves installation time. The boards arrive ready to be installed, no jobsite preparation needed.
For a fireplace, it's essential to use heat-resistant tiles such as porcelain, ceramic, or natural stone like slate, marble, or granite. These materials can withstand the high temperatures generated by a fireplace without warping, cracking, or discoloring.
Hardie board (fiber-cement) siding offers exceptional durability and fire resistance, but its primary drawbacks include high upfront material and installation costs, complex and heavy labor requirements, and the need for periodic repainting.
Both Durock and HardieBacker are high-quality tile backer boards designed to prevent moisture damage and provide a solid foundation for tile. Choose Durock for ultimate moisture resistance and wet areas, or HardieBacker for easier cutting, less mess, and a stiffer board that yields flatter walls.
Yes, fiber cement board is highly fire-resistant. Made of cement, sand, and cellulose fibers, it is universally rated as a non-combustible material. It will not ignite when exposed to direct flames, making it a top choice for home hardening, exterior siding, and fireplace surrounds.
Use 14one-fourth14-inch cement board exclusively for floors and countertops where it is fully supported by a solid subfloor. Use 12one-half12-inch cement board for walls, showers, and tub surrounds, as it is rigid enough to span the gaps between wall studs.
Cement board is a non-combustible, heat-resistant barrier essential for safely installing a fireplace surround. It protects nearby wood framing from high temperatures and provides a durable substrate for finishes like tile, brick, or stone. A minimum thickness of 1/2 inch is recommended for optimal weight-bearing and fire safety.
Common Mistakes: How to Install Cement Board the Wrong Way