Attic insulation question


Old 11-08-03, 11:09 AM
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Attic insulation question

I am adding insulation to the attic that already has insulation. I have a heater chimney that goes through the attic. Can I use John Manville Kraft R-19 unfaced batts to add insulation to the attic? The package says its for wall/floor/crawl spaces. I assume it can be used for attic too. Can batts touch heater chimney? The chimney actually has two pipes, one inside another. The inner pipe is very thin aluminum pipe while outer pipe is regular duct metal pipe. If batts cannot touch chimney can I use thermofiber insulation around the chimney and keep batts 3" away from it? I think thermofiber insulation does not burn and can touch hot objects.
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Old 11-12-03, 01:16 PM
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Join Date: Aug 2002
Location: Mountain Williams Missouri
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Thumbs up attic

Sure you can use that R19 there in the attic. There by that vent pipe. I would sure try and keep it clear of the pipe if I can.If you let it there it could cause a hot spot in the vent pipe That pipe has tobe 1" from wood or walls. Its whats called a B vent pipe ED
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