Mortar and Adhesives

-13%
M230 High Temperature Black Sealant Case Of 16 M230 High Temp Sealant
M230 High-Temp Stove Bright Sealant - Case Of 12
$259.95
$299.20
Free shipping|In Stock
-21%
Super 3000 Premium Refractory Cement
Super 3000 Premium Refractory Cement Mix
$126.95
$159.99
Free shipping|In Stock
-12%
Black Furnace Cement AWP#40
Furnace Cement Black - Case Of 12
$76.85
$86.84
Free shipping|In Stock
-12%
Stove Bright M230 High Temperature Sealant - 900° M230 High Temp Sealant
M230 High-Temp Stove Bright Sealant
$21.85
$24.93
Free shipping|In Stock
-13%
AW#81 Gasket Cement - Black - 2000° F 10.3 ounce Caulking Cartridge of Stove & Gasket Cement - Black
Wood Stove Gasket Cement Cartridge 2000 Degrees
$21.17
$24.20
Free shipping|In Stock
-15%
Clear High Strength Silicone Sealant RTV4500 High Strength Silicone
High Strength Clear Silicone Sealant 10.3 Fluid Ounce
$16.99
$19.99
Free shipping|In Stock
Furnace Cement Black 10 Ounces
$16.85
Free shipping|In Stock
-20%
Multi Surface Silicone Sealant RTV7500 High Strength Silicone
Clear Multi Surface Silicone Sealant 10.3 Fluid Ounce
$15.99
$19.99
Free shipping|In Stock
Wood Stove Gasket Cement Black 2 Ounce
$14.20
Free shipping|In Stock
-13%
Gray Fireplace Mortar
Gray Fireplace Mortar 10.3 Fluid Ounce
$13.99
$15.99
Free shipping|In Stock
-13%
Black Fireplace Mortar
Black Fireplace Mortar 10.3 Fluid Ounce
$13.99
$15.99
Free shipping|In Stock
-13%
Buff Fireplace Mortar
Buff Fireplace Mortar 10.3 Fluid Ounce
$13.99
$15.99
Free shipping|In Stock
Stove Gasket Cement 2 Fluid Ounces
$7.99
Free shipping|In Stock

Fireplace Doors Online offers high heat mortar mix and high temperature silicone adhesives for all your stove and fireplace repair needs! These products are tried and proven to deliver incredible performance!

Our mortars can withstand intense heat up to 2000° F! Best used for filling in joints and flaws that have formed over the years between the bricks on your fireplace. For a DIY task that requires you to pour castable fire brick, we have a terrific refractory cement that will get the job done right!

Our adhesives are great for gasket and glass installations. They are NSF approved and adapt to many substrate surfaces. All of these mortars and adhesives are quick curing, durable, simple to use, and low odor products! 

Silicone & Caulking Tips: DIY like a Pro!

  1. This cartridge fits into a standard caulking gun. For clean application, cut cartridge tip near the end, at approx 45 degree angle.

  2. Surface must be clean, dry, and free of debris. Have some damp rags or a roll of paper towels within reach. Put down newspaper in case of carpet drip.

  3. To lay a professional bead, hold the caulking gun at apx 45 degrees. Spin the cartridge tube so the longest part of your tip is on the top side of the gun.

  4. Now gently squeeze the gun just a bit, and begin to drag a bead starting at the highest point. Only squeeze the gun if your bead is too small. Find a rhythm :)

  5. For a clean job, when laying a bead, "A little dab will do ya!" You can always go back and add more silicone.

  6. After applying and working the silicone, let it cure for at least 30 minutes (at room temperature) before using your appliance.