Backing for log/coal burner

Hi, The chimney recess where my log/coal burner fits is rendered in cement which over each winter cracks behind the fire due to the heat. I have been looking at VITCAS High Temperature plasterboard and VITCAS fireplace render.

Does anyone have any experience with this/these materials? Or even a better suggestion. Thanks, Toiler

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How about a wire frame with baco foil and inch off the back wall and open top and bottom.

AJH

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/>Does anyone have any experience with this/these materials? Or even a

How about a wire frame with baco foil and inch off the back wall and open top and bottom. /q

Fsv of 'better'....

Jim K

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JimK

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