The black stuff would have been butt ugly.
Furnace cement caulk.
Run a bead over the gap and smooth it down with your finger.
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Use as a cement or a sealant for wood stoves firebricks mortar joints and gasket adhesive.
Because the pipe gets hot building codes usually require 1 inch of clearance from metal flues 2 inches from masonry chimneys to any combustible material including insulation.
Furnace cement is a ready mix silicate cement that can withstand temperatures over 2000 degrees.
Range 40 degrees to 100 degrees f for use with standard caulk gun meets astm e136 from the manufacturer.
Fix a crack seal the collar to the top of a wood stove or seal between firebricks and prefabricated fireplace.
Stove and fireplace mortar.
If you are sealing a gap around the heat exchanger use a high.
Stove and fireplace cement.
Older less efficient furnaces used to be vented via an exhaust pipe running to a chimney.
Rutland furnace cement is premixed and ready to use making it one of the easiest cements to apply.
Modern furnaces are so energy efficient that much of the heat.
Chamber safe refractory parging material.
Free delivery with 45 order.
Black furnace cement tub model 64 6 97 6 97.
The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic.
Range 0 degrees to 2000 degrees f flash point greater than 200 degrees f application time 1 hr application temp.
Silicate cement base silicate cement size 10 1 oz container type tube color black specific gravity 1 8 performance temp.
Although application can seem like an intimidating process a bit of simple.
Community q a.
How to seal around exterior furnace vents.
Furnace cement is perfect for sealing between firebricks and sealing the collar of your wood stove.
Furnace flues require special sealing techniques.
Seal smaller gaps in your furnace with regular silicone caulk.
Use this smooth consistency cement to bond and seal metal to metal or metal to masonry joints less than 1 8.
Furnace cement is the go to product for filling cracks and voids in furnaces stoves and other appliances that regularly produce high temperature environments.
