Proper insulation to protect PVC pipe for radon system from nearby heat source


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Old 11-19-11, 07:16 PM
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Proper insulation to protect PVC pipe for radon system from nearby heat source

I'm having a new direct-vent gas fireplace installed this week. It's larger than my old fireplace which requires enlargement of the wall. The PVC pipe for my radon system runs through the chimney chase vertically. It will only be about 2 inches from the fireplace. I think I need to insulate it from the heat. I was told 3 inches was safe distance for not requiring insulation.

Would foil-faced fiberglass wrap do the trick? I've also seen "non-itch" insulation made from recycled jeans. I'd appreciate a product recommendation. Thanks.
 
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Old 11-19-11, 07:57 PM
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Relocating the pipe would be the best. Next best would be a mineral wool insulation such as made by Roxul. I would not use foil-faced (or any faced) fiberglass.
 
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Old 11-20-11, 11:14 AM
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Whew! I actually have minimum clearance

I took a more precise measurement this time and I discovered that I will have exactly three inches of clearance between the pipe and the fireplace. I don't need to insulate!

Thank you for your answers.

:HF2:
 
 

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