IR gun zaps the fire at 600 degrees and the marble hearth (too hot to touch) says 140 degrees, is this any concern? I have an insert and the mantle underneath is a cool 84, but wow the hearth is hot, any issues at this temp?
My hearth says 140 degrees, any concern?
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Autoignition temperature is probably 500F, but read this: (broken link removed to http://www.doctorfire.com/low_temp_wood1.pdf)
Long term exposure to 170F temps has altered the wood to the point that it can autoignite at a significantly lower temp. So 140F is probably safe but keep an eye on surrounding wood temps (and underneath the marble if you can get there).
Long term exposure to 170F temps has altered the wood to the point that it can autoignite at a significantly lower temp. So 140F is probably safe but keep an eye on surrounding wood temps (and underneath the marble if you can get there).
jeffesonm
Minister of Fire
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Gotta get to 400 before that cat will ignite.
saskwoodburner
Feeling the Heat
Yeah, but even then, they usually have too much moisture content to burn well.
Our fuzzy old devil likes to lay beside the hearth pad, and somehow puffs out his fur somewhat to absorb the heat? better.
Ok sorry to piggy back but let's say you put down the required layers of non combustible material (2 layers of Durock) ontop of 3/4" plywood. The screws to secure the durock to the plywood, would they radiate heat into the plywood to a point to cause an issue with as 1/2" of mortar and 1/"2 slate flagstone over the screws?
Stove is an Ideal Steel requiring an R value of 0.41.
Stove is an Ideal Steel requiring an R value of 0.41.
That question comes up every once in awhile. My take on it is no. The thinking is that the heat is dissipated and spread out by the tile or stone before it hits the screw head and the area is very small.
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