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#1 11-05-2006 06:00:00
Roll-in FIberglass Insulation Backing Mastic
[This is an archived post from the previous EIA forum.]
JPBrake said...
I hate to beat (or shoot) a dead armadillo but I have to take another shot on this topic .
Material: Typical Residential-type Roll-in insulation found in ceilings and walls. There is the synthetic insulation material (fiberglass) and a backing paper. Between the backing and insulation is an adhesive/mastic that is usually black.
My question to the asbestos inspectors and others:
Have you ever tested this adhesive/mastic. If so, what where the results. If you have tested it how many times (different inspections) have you tested it.
Or, if you haven't tested this adhesive/mastic, why not? We generally test all other adhesives/mastics.
It seems that many times when I pose this question the discussion moves to fiberglass duct insulation mastic. That is NOT the material in question.
Several members have told me candidly that mastic is mastic is mastic and should be sampled. However real data pertaining to the material described (roll-in insulation) is lacking.
This is really bugging me.
Thanks in advance for your discussion and input.
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#2 11-05-2006 06:00:00
Re: Roll-in FIberglass Insulation Backing Mastic
[This is an archived post from the previous EIA forum.]
JPBrake said...
I googled "fiberglass mastic backing" and found an asbestos survey report from 2002 conducted at an education facility.
Many materials contained asbestos including:
"tar layer on fiberglass batting"
The link to the report is:
http://www.facm.umn.edu/hazmat/pdfs/070Boyn.pdf
Seems this material may absolutely contain Asbestos.
Comments?
Concerns?
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#3 11-07-2006 06:00:00
Re: Roll-in FIberglass Insulation Backing Mastic
[This is an archived post from the previous EIA forum.]
GSP said...
I know exactly the material you are talking about...and yes...I sample it all the time. Does it come back positive? Yes, it does.
I don't have exact stats for you, but I would say it comes back positive maybe 2-5% of the time. (not 2-5% asbestos...I mean 2-5% of the samples I've collected have been postitive).
I've seen the positive stuff mostly installed on ceilings, but if I see it anywhere, I sample it.
There have even been times when I've seen it on walls and ceilings in the same building, and I've sampled the walls and ceilings as separate homogeneous areas.
Hope that helps.
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#4 12-05-2006 06:00:00
Re: Roll-in FIberglass Insulation Backing Mastic
[This is an archived post from the previous EIA forum.]
fiberquant said...
I agree. I have analyzed a lot of these, and some small but finite % of these mastic layers contain chrysotile. As with most material types, however, the % of samples found that are positive has been dropping over the years. I would estimate that the % of insulation mastics coming through our door that are positive at the present time is <1%. Most of our samples are from Phoenix.
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#5 04-05-2007 07:00:00
Re: Roll-in FIberglass Insulation Backing Mastic
[This is an archived post from the previous EIA forum.]
eplumley1978 said...
I agree I am an analyst and analyzed thousands of the samples you ask of. Although it is extremely rare I have seen Chrysotile in the mastic.
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#6 12-31-2010 16:21:49
- irongrate
- New member
- Registered: 12-31-2010
- Posts: 1
Re: Roll-in FIberglass Insulation Backing Mastic
Hello to all. Any advice would be much appreciated. I just discovered roll in type fiberglass insulation in my basement with the name Zonolite on it. Our home was built in the early 60's and I am terrified of asbestos. My father died from Mesothelioma last year. Does anyone know if asbestos was ever in fiberglass insulation. Every thing I have read online involving Zonolite is the loose form. Please help if you have any knowledge of this. Thank you.
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#7 05-11-2011 05:04:44
- iamnumber4
- New member
- From: Caribbean
- Registered: 05-11-2011
- Posts: 6
Re: Roll-in FIberglass Insulation Backing Mastic
I agree. I have analyzed a lot of these, and some small but finite % of these mastic layers contain chrysotile. As with most material types, however, the % of samples found that are positive has been dropping over the years.
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#8 05-14-2011 04:56:17
- AHAMED
- New member
- Registered: 05-14-2011
- Posts: 1
Re: Roll-in FIberglass Insulation Backing Mastic
Yes you are right
good post
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#9 10-25-2011 03:36:36
- gelbebrille
- New member
- Registered: 10-25-2011
- Posts: 1
Re: Roll-in FIberglass Insulation Backing Mastic
Chrysotile (white) asbestos was commonly used as a binding agent in resins, mastic, putty and flooring adhesives from the 1940s up until the 1980s. These are the lowest risk category of asbestos containing material because there is little likelihood of fibre release. Care should be taken though not to sand or scrape these products.
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