| Answer: No, neverExplanation: I personally would not
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  | KK TV Mounting | 
  | Answer: Yes, alwaysExplanation: Where else would you put it?
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  | Connect Tech Svcs TV Mounting | 
  | Answer: In most casesExplanation: You can mount to it as long as you're not drilling into the chimney flue and it's enough space to use toggles  or lag bolts.
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  | Acuity Installation, LLC | 
  |  | 
  | ProMatcher | 
  | Answer: In some casesExplanation: It would depend on the thickness and heat transfer thru that thickness.  If warm to the touch I would not recommend.
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  | Construct Boss | 
  | Answer: Yes, alwaysExplanation: I have done it once
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  | MrTVMount Pros | 
  | Answer: In most casesExplanation: As long as it is anchored properly
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  | Mn Tv & Entertainment Installation | 
  |  | 
  | ProMatcher | 
  | Answer: In most casesExplanation: depends on mounting surfaces
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  | D&R Home Audio Services | 
  | Answer: Not sureExplanation: not sure
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  | sky tv mounting |