open fireplace hearth

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gtflash

New Member
Feb 25, 2011
1
sydney/australia
can someone please tell me what the cement / concrete mix ratio is 4 an outdoor fireplace ? Am building a shower boiler out of 18 gallon kegs which will require an open fire placed underneath , so need a hearth that won't blow out from direct fire / heat .
 
i bet u need to use firebricks google fornobravo u might get some ideas there
 
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