putting a heat barrier behind stove question

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robertjp

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Oct 7, 2008
75
Western NY
I was wondering if I can screw hardibacker to the wall behind my new stove and put ceramic tiles on the hardi.? Will that work with the heat coming off the stove? (like making the tiles fall off)

It took me a long time to figure out the floor, now its the wall. Thanks in advance.
 
depends on how far away from the wall you want to put it.

What kind of stove is it and how far away do you want it?

pen
 
If your problem there is clearance to flammables, you'll almost certainly need airspace behind the refractories, to dissipate the heat. The screws can even be a problem. What's acceptable will be determined by your building inspectors and insurance company.
 
Ive already met the minimum clearance from the wall. 13". I'm trying to just play it safe by putting something behind it. The manual doesnt say other than 13" minimum which Ive met. Think my idea of tiles on a backerboard will be ok with the proper thinset? Thanks guys.


Be Green,

Thanks for the great article. Great idea. Where do you find the connectors and what are they called?
 
Yes, you will be more than fine based on the description.
 
Also the heat shield is a great idea too. Do they come up to the top of the stove or higher? Where can you get them for a US Stove Co. model and about how much do they cost? I need to play it safe as its for a cottage and there is no running water. I have plenty of fire extinguishers though. Its just drywall behind it.
 
Stove boards are sold by Amazon, Northline Express, etc. Imperial and Hy-C are a couple manufacturers. This is different from a hearth board. It's non-combustible, but thinner and just an ember or heat shield. Or you can just go to a local sheet metal shop and have them cut you up a piece of 22ga sheet metal. Then paint it with high temp paint if desired. Make it about 6" wider than the stove and about 6" above the flue collar for height.

http://www.sandhillwholesale.com/wo...rd-hearth-wall-floor-protection-c-21_197.html
 
Will my idea work using a hardibacker board 1/2", special thinset, and ceramic (porcelin) tiles? That way the tiles can match the floor tiles it sits on and of course using the spacers as described in the article and a 1" airspace? Not sure theres a whole lot of r value but Ive already met the minimum distance plus Id use the airspace.
 
Not sure what 1/2" special thinset means. Normally for 1/4" thick tiles, a layer of notch troweled 1/4" fortified thinset like Flexbond is sufficient I think.
 
If you've complied with the manufacturer's required minimum Clearance to Combustibles (which are based on very conservative standards), then why not just burn the stove for a while and keep an eye on the back wall temps and figure out if you're comfortable with the installation? Fastening anything directly to the wall behind the stove really buys you nothing, because whatever you put there is going to conduct all its heat into the combustible wall. The only way to mitigate this is to construct and install a non-combustible ventilated wall shield, which is no small undertaking. In any case, any additional wall protection you feel would make you more comfortable can always be added later, so long as you start out meeting or exceeding the CTC's. Rick
 
If the manufacturer says that 13" is the minimum Clearance To Combustible material, than that's exactly what it means. A typical stud & drywall wall is considered a combustible material. So, if you honor or exceed the manufacturer's published minimum CTC, it doesn't really matter what the wall is made from. Rick
 
robertjp said:
Since this is my first woodstove, is it common to have just drywall behind a stove even though the minimum 13" was met?
Click to expand...

Yup . . . not all of us have fancy brick or stone work behind our stoves . . . many of us put in the hearth and just made sure it met the clearance and R value requirements and have plain old painted drywall behind the stove . . . but be forewarned . . . if you hang out here long enough and see some of the fantastic looking hearths with nice stone work behind the stove you may be inspired to fancy things up a bit in the near future. ;)
 
Drywall is all that sits behind our stove. I exceeded clearances by a couple inches and worked out fine.
 
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