Need comparison of heat rating for flat and rope gasket - # 617
Question:Our local code requires that the hearth extender be sealed to the hearth with stove gasket and stove cement. Two questions: Our stove vendor gave us self-adhesive flat gasket material that is at least 3/8” wide but not very thick from front to back (perhaps less than 1/4”). Our inspector said we could use flat or rope gasket material 1/4” to 3/8”. Does the rope type at 3/8” have a higher rating than the flat type at 3/8”? Also we bought stove cement that says stove heat completes the curing. Does that mean if you use it in a hearth situation that it won’t properly cure or will it just take a little longer to cure. (Just for reference purposes, I was the person who wrote about appealing the inspector’s request to remove the carpet from under the hearth extender. I talked to the building commissioner in town, but no go. we have to remove the carpet.). Thank you for your help.
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Answer:
Joyce, none of this stuff will come into play, because the temperatures that you reach will NEVER be anywhere near the rated temperatures of the materials. All the gaskets have a rating of 1000 degree plus, a temperature at which steel would glow red ! Don’t worry about the curing…it’ll work fine….If you want it to stick well, use silicone…
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