These shields are constructed with a sheet of 24 gauge or thicker sheet metal or 1 2 or thicker cement board with 1 of air space behind the shield and around the perimeter to allow free air flow.
Cement board wood stove heat shield.
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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 simplest masonry heat shield is a cement board that is separated from the wall by one inch ceramic spacers.
1 heat shield spacers are available online or sometimes at your local hardware store for this purpose.
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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.
The manufacturer of one brand of cement board says it is suitable for heat shielding go to the faq.
This approach is rather unattractive though so you can beautify the cement board by.
A heat shield is necessary to protect the walls from damages due to constant use of the stove and to protect your home from possible fires.
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.
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.
The back of the stove was about 18 to 24 from the wall.
Step 1 use an electric stud finder to find the studs in the wall behind the position that you will place the wood stove.
Specific requirements for heat shielding your stove may require more than one piece of concrete backer board to meet the required dimensions.