Comparison: Best Fireplace Mortar (Updated | Dec 16th)
Whether you’re a DIY enthusiast or professional mason, our comprehensive comparison will guide you through heat resistance, durability, and ease of application. Get ready to seal those gaps and enjoy crackling fires with confidence—let’s find your perfect fireplace mortar match!
- Best for heat-cured repair: Rutland Fireplace Mortar Cartridge
- Best for no heat cure: Rutland Dry Mix 211 Refractory Mortar 2.5 Pound – USA-Made High Temperature Mortar for Masonry – 2550°F Fire Cement Patch for Fireplace Brick
- Best for large project mix: Rutland Dry Mix 211 Refractory Mortar 10 Pound – USA-Made High Temperature Mortar for Masonry – 2550°F Fire Cement Patch for Fireplace Brick
- Best for astm certified: Tenon Refractory Mortar – High Temperature Mix for Fireplaces
- Best for black heat seal: Rutland Fireplace Mortar Cartridge
- Best for dual pack value: MEECO’S RED Devil 121 Furnace Cement and Fireplace Mortar (Two Pack)
- Best for extreme heat shield: Furnace Cement – High Heat Fire Resistant Mortar
- Best for gray heat cure: Rutland Fireplace Mortar Cartridge
- Best for trusted since 1937: Meeco’s Red Devil 1353 Gray Furnace Cement & Fireplace Mortar – High-Temperature Silicate Cement for FireBrick
- Best for versatile high-temp: Tenon Refractory Mortar – High Temperature Mix for Fireplaces
Product Comparison: Best Fireplace Mortar
Rutland Fireplace Mortar Cartridge, 10.3 Fl Oz, Buff – 63B
- Comes in Buff, Gray and Black
- Perfect for repairing small chips or cracked firebrick, re-pointing mortar joints between firebricks, and bonding firebricks together
- For interior use only and requires heat to cure
- Approximate Coverage: 99 feet with 1/8″ bead
- Rated to 2000°F (1090°C)
Rutland Dry Mix 211 Refractory Mortar 2.5 Pound – USA-Made High Temperature Mortar for Masonry – 2550°F Fire Cement Patch for Fireplace Brick, Fire Pit, Kiln, Forge & Pizza Oven Repair
- Refractory mortar that is ideal for joining or repairing fire brick and masonry flue tile in any gas or wood fireplace and wood, coal, or pellet stove chimney
- Needs to be mixed with water. Mix 2.5 lbs of dry mortar to 8 oz of water
- Does not require a heat cure. Dry Mix 211 will cure completely just by being exposed to air
- Can be used outdoors and can be painted once dry
- All components made in the USA
Rutland Dry Mix 211 Refractory Mortar 10 Pound – USA-Made High Temperature Mortar for Masonry – 2550°F Fire Cement Patch for Fireplace Brick, Fire Pit, Kiln, Forge & Pizza Oven Repair
- Refractory mortar that is ideal for joining or repairing masonry flue tile in any gas or wood fireplace and wood, coal, or pellet stove chimney
- Dry mix cement, just add water and trowel into place
- Can be used as a parge coating (thin over-coat) when building or repairing fireboxes
- Dark grey finish
Tenon Refractory Mortar – High Temperature Mix for Fireplaces, Fire Pits, Chimneys, Parging, Brick, Clay, and More, White in Color, High Heat Resistance, Up to 2550°F (1, 10 Pounds)
- READY TO USE: Preblended, just add water and go!
- INDOOR OR OUTDOOR: Ideal for fireplaces, inside of fire pit rings, barbeques, pizza ovens, and chimney applications such as setting clay flue liners, parging a smoke chimney chamber
- EFFICIENT WORKING TIME: Provides 1 hour of working time prior to hardening
- HIGH STRENGTH: Once cured, becomes water insoluble and acid resistant
- ASTM CERTIFIED: Passes ASTM C199 (required by most building codes for installation of firebrick and flues in chimneys, masonry fireplaces and similar applications)
Rutland Fireplace Mortar Cartridge, 10.3 Fl Oz, Black – 63
- Comes in Black, Buff and Gray
- Perfect for repairing small chips or cracked firebrick, re-pointing mortar joints between firebricks, and bonding firebricks together
- For interior use only and requires heat to cure
- Approximate Coverage: 99 feet with 1/8″ bead
- Rated to 2000°F (1090°C)
MEECO’S RED Devil 121 Furnace Cement and Fireplace Mortar (Two Pack)
- Meeco’S Red Devil 10.3 Oz. Gray Ready-to-Use Fireplace Mortar
- Furnace cement and fireplace mortar in a convenient 10.3 oz (ounce) cartridge.
- Multi-purpose cement for bonding and sealing both masonry and metals with working temperatures up to 2000 F (degrees Fahrenheit). Designed for patching or repairing cracked or chipped firebrick and mortar.
- For use with firebrick, gasketing, mortar joints, and wood stoves. Effective in resetting and cementing furnaces, stoves, chimney collars, boilers, and duct work. Tube does not include replacement cap.
- Pack of 2.
Furnace Cement – High Heat Fire Resistant Mortar, Black Fireplace Cement (2732°F), Heat Resistant Sealant for Fireplaces, Ovens, Stoves, Chimneys, Grills & Flues – 10.5 fl.oz
- 2732°F HEAT RESISTANCE – This black high temp cement is rated up to 2732°F, making it ideal for sealing and repairing areas exposed to extreme heat, including fireplaces, furnaces, and wood stoves
- ROCK SOLID – Applies as a smooth paste and cures to a rock-solid finish; perfect for long-lasting heat-resistant repairs in flues, chimneys, grills, and boilers
- FAST CURING – Fireplace cement sets within minutes and forms a durable, fireproof seal once fully cured; essential for high-temperature patch jobs
- MULTI-PURPOSE – Somafix wood stove cement is trusted by pros for fireplace installation, patching fireboxes, sealing stove pipes, repairing oven cracks, or fixing chimney joints
- EASY TO APPLY – Ready-mixed fire cement fits any standard caulking gun for clean, controlled application, no mixing or mess, just squeeze and seal
Rutland Fireplace Mortar Cartridge, 10.3-Ounce, Gray – 63G
- Comes in Gray, Buff and Black
- Perfect for repairing small chips or cracked firebrick, re-pointing mortar joints between firebricks, and bonding firebricks together
- For interior use only and requires heat to cure
- Approximate Coverage: 99 feet with 1/8″ bead
- Rated to 2000°F (1090°C)
Meeco’s Red Devil 1353 Gray Furnace Cement & Fireplace Mortar – High-Temperature Silicate Cement for FireBrick, Gasketing, Mortar Joints & Wood Stoves (16 fl oz) – Ready to Use – Made in The USA
- 16 OZ TUB CEMENT – High-strength gray sodium-silicate-based compound formulated for repairing, sealing, and bonding in high-heat environments such as furnaces, stoves, and fireboxes.
- PERFECT FOR REPAIRS – Ideal for patching or repairing cracked firebrick and mortar, as well as re-setting and cementing furnaces, stoves, chimney collars, boilers, and ductwork.
- EXTREME HEAT RESISTANCE – Withstands continuous temperatures up to 2,000 °F, providing long-lasting durability and protection under intense heat conditions.
- EASY TO APPLY & CLEAN – Smooth texture spreads easily from the 16 oz container; cleans up quickly with soap and water before curing.
- TRUSTED QUALITY SINCE 1937 – Proudly made in the USA by Meeco’s Red Devil — America’s trusted name in stove and fireplace care.
Tenon Refractory Mortar – High Temperature Mix for Fireplaces, Fire Pits, Chimneys, Parging, Brick, Clay, and More, White in Color, High Heat Resistance, Up to 2550°F (1, 25 Pounds)
- READY TO USE: Preblended, just add water and go!
- INDOOR OR OUTDOOR: Ideal for fireplaces, inside of fire pit rings, barbeques, pizza ovens, and chimney applications such as setting clay flue liners, parging a smoke chimney chamber
- EFFICIENT WORKING TIME: Provides 1 hour of working time prior to hardening
- HIGH STRENGTH: Once cured, becomes water insoluble and acid resistant
- ASTM CERTIFIED: Passes ASTM C199 (required by most building codes for installation of firebrick and flues in chimneys, masonry fireplaces and similar applications)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What should I look for in a fireplace mortar?
Look for a high-temperature rating, typically above 2000°F, to ensure it can withstand fireplace heat. Choose a mortar that is non-combustible and designed for firebrick or refractory applications. Check for ease of application, such as pre-mixed or ready-to-use formulas.
How do different fireplace mortars compare?
Refractory mortars are ideal for high-heat areas, while standard cement-based mortars may crack under extreme temperatures. Some products offer added flexibility to accommodate thermal expansion, reducing the risk of gaps. Compare drying times and whether the mortar requires heat curing for optimal strength.
What features make a fireplace mortar high-quality?
A high-quality mortar should have excellent adhesion to firebrick and other masonry materials. It should resist cracking and shrinkage as it cures, ensuring a durable seal. Look for formulas that are water-resistant after curing to prevent moisture damage.
Is pre-mixed or dry-mix mortar better for fireplaces?
Pre-mixed mortars are convenient and save time, ideal for small repairs or DIY projects. Dry-mix mortars offer more control over consistency and are often more cost-effective for larger jobs. Consider your project size and skill level when choosing between the two.
How much fireplace mortar do I need?
Estimate the amount based on the size of the joints or gaps you need to fill, typically 1/4 to 1/2 inch thick. A 10-pound bucket usually covers 10-15 square feet for standard joint widths. Always buy a little extra to account for waste or touch-ups.
Can I use regular mortar for a fireplace?
No, regular mortar is not designed to withstand the high temperatures of a fireplace and may crack or fail. Fireplace mortar is specially formulated with refractory materials to handle extreme heat. Using the wrong product can lead to safety hazards and costly repairs.
How do I apply fireplace mortar correctly?
Clean the area thoroughly to remove dust, debris, and old mortar before application. Apply the mortar evenly with a trowel or caulk gun, ensuring joints are fully filled. Allow it to cure as directed, which may include a low-heat fire to set the mortar properly.
What is the best value fireplace mortar?
The best value mortar balances durability, ease of use, and price for your specific needs. Look for trusted brands with positive reviews and proven performance in high-heat environments. Avoid overly cheap options that may compromise safety or longevity.