Fireplace Mortar


Old 01-20-00, 01:51 PM
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I am building a brick smoker in the backyard and I know that there is a formula for mixing the mortar to fireproof and/or provide heat resistance.

Does anyone know the formula?

e.g. __% mortar, ___% clay
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Old 01-20-00, 08:12 PM
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More than one way exists. The first is use refactory mortar (opting for one that contains Sodium Silcate). This mortar sets with heat, and withstands high temperatures, and you won't have problems with the smoke breaking down the mortar. Drawback: cost.
Next option use FireClay and fireclay brick. Mix the fireclay according to the directions. The brick is dipped in the slurry (as was option one) then set in place, allowed to dry for about 1 month then slow fires are built to set the mortar. Last option (nearer to your question):
1 part cement
4 1/2 sand
1/2 fireclay
Old 01-20-00, 08:14 PM
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Whoops! options one and two: joints are 1/16" to 1/8" (not wider).
Old 01-21-00, 12:53 PM
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Thanks, 2000. You gave me the answer I needed.
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