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Cement board wood stove heat shield.
The simplest masonry heat shield is a cement board that is separated from the wall by one inch ceramic spacers.
This approach is rather unattractive though so you can beautify the cement board by.
Hardi cement board is also designed to have ceramic porcelain or stone tiles installed over it to cover and beautify the heat shield after it is installed.
It got extremely warm almost hot on the wood floor and the wall board in back of the stove got hot but not much of a concern.
The back of the stove was about 18 to 24 from the wall.
I used cement board in that same fashion under stove and as a back wall for one year.
The tan ceramic tile heat shield behind the woodstove and its flue in this photo was constructed by the author df in 1990 by bonding ceramic tile to a factory made fireproof heat shield board consisting of metal covering a fireproof cement board.
Specific requirements for heat shielding your stove may require more than one piece of concrete backer board to meet the required dimensions.
Backer board is a heat shield that is found behind wood burning stoves.
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Step 1 use an electric stud finder to find the studs in the wall behind the position that you will place the wood stove.
Generally the heat shield must extend a minimum of 20 inches beyond each side of the wood stove and 20 inches above it.
1 heat shield spacers are available online or sometimes at your local hardware store for this purpose.
In my experience cement board makes a good heat shield and in at least one jusisdiction with strong codes and enforcement fairfax county va it is accepted as a heat shield material when properly installed.
Modern wood stoves can be installed closer to the wall because of backer boards.
Constructing the heat shield itself is a relatively easy process.