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Thread: Is this Rockwool insulation?
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08-18-2009, 10:41 AM #1
Is this Rockwool insulation?
Looking at the pictures, does this appear to be Rockwool insulation. Also is that vent line wrapped with Asbestos insulation?
Jim Murphy
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08-18-2009, 11:45 AM #2
Re: Is this Rockwool insulation?
The first photo looks like cellulose and the subsequent pictures look like rock wool.
Don't see anything that looks like asbestos on the duct work.
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08-18-2009, 12:08 PM #3
Re: Is this Rockwool insulation?
To clarify: there is insulation on the ceiling (I agree with Raymond that looks like cellulose); and there is insulation on the duct work (I disagree with Raymond on that, to me that insulation looks like fiberglass).
You could say the duct insulation is "mineral wool" as both "rock wool" and "fiberglass" are "mineral wool".
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08-19-2009, 04:06 AM #4
Re: Is this Rockwool insulation?
You could say the duct insulation is "mineral wool" as both "rock wool" and "fiberglass" are "mineral wool".
Though it may be true that the unwashed use the terms "rock wool" and "fiberglass" interchangeably the two terms denote entirely different materials. There is however the term "glass wool" that would be appropriate when referring to fiberglass insulation.
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08-19-2009, 06:35 AM #5
Re: Is this Rockwool insulation?
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08-19-2009, 09:33 AM #6
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08-20-2009, 08:33 AM #7
Re: Is this Rockwool insulation?
I agree that the first picture with blue insulation looks to be a form of cellulose insulation, specifically looks like spun cotton insulation may have been unfaced batt. This type of insulation is borate treated to resist pests and offer fire resistance and usually contains a fair amount of recycled denim, and usually has a characteristic blue tint, it can be applied blown, or installed in batt form, faced or unfaced.
The faced insulation on duct work may be spun fiber "mineral wool".
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08-20-2009, 08:39 AM #8
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