Step 2Procedure 4 Mixing Cement & Perlite
"You will need about 1 part (by volume) of Furnace Cement for each 4 parts (by volume) of Perlite so for a two gallon bag of Perlite you will need a half gallon of Furnace Cement. If you use much less than four volumes of Perlite for each volume of Furnace Cement all of the passages between Perlite beads will be sealed and it will take a long time for the cement to set (it needs contact with air). If you use much more than five volumes of Perlite for each volume of Furnace Cement the resulting material will be quite weak. You will also want to have some Furnace Cement to use as a sealing coat on your lining."
I followed all of that.
also he said this
"The Furnace Cement has about the consistency of roofing tar and is very sticky. It is MUCH easier to work with if you add about 2 cups of water per gallon of cement. This makes it more like a thin plaster. A rubber spatula is good for getting the cement out of the plastic tub."
but forget the spatula use your hands but be warned it made my hands burn and itch around my nails no big deal but i figured I'd give you a heads up.The amount of water I added was way more than that and it came out fine just add slowly as you go along and you'll be fine.
Add the perlite slowly to the cement as you mix it.
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