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• Examples of unusual uses of asbestos insulation material in buildings

This page provides examples of examples of unusual uses of asbestos insulation material in buildings, most likely also hazards that should be evaluated. This document assists building buyers, owners or inspectors who need to identify asbestos materials (or probable-asbestos) in buildings by simple visual inspection. We provide photographs and descriptive text of asbestos insulation and other asbestos-containing products to permit identification of definite, probable, or possible asbestos materials in buildings.

While an expert lab test using polarized light microscopy may be needed to identify the specific type of asbestos fiber, or to identify the presence of asbestos in air or dust samples, many asbestos-containing building products not only are obvious and easy to recognize, but since there were not other look-alike products that were not asbestos, a visual identification of this material can be virtually a certainty in many cases. Also see Asbestos HVAC Ducts a field identification guide to visual detection of asbestos in and on heating and cooling system ducts and flue vents. Also see Micro-Photographs of Dust from the World Trade Center collapse following the 9/11/01 attack. Links to U.S. government and other authoritative research and advice are included.
© Copyright 2008 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

ASBESTOS PAPER DUCT INSULATION Asbestos pipe insulation, found under attic floor as house insulation

This unusual "attic insulation," made of corrugated asbestos "paper" laid flat, was in the floor of a 1940s house in New York state. We speculated that the installer had a source of "free" insulation and that it was installed before the asbestos scare.

Asbestos Gas-Fireplace Materials in Old Houses

This pre-1900 gas fireplace found in a Minnesota home used tufts of asbestos fibers to support the heating flame. [Photograph courtesy Roger Hankey.]

Continue reading in this article using direct links to the sections listed below, or

Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

IDENTIFICATION of ASBESTOS in BUILDINGS
Asbestos Risk Assessment
Asbestos in Good Condition
Asbestos in Poor Condition
Asbestos Removal, Amateur, Incomplete
Abandoned Pipe Insulation
Asbestos Foamed-Over
Asbestos in unusual places
Paper Duct Insulation Containing Asbestos
Carbon Nanotube Materials
Transite Pipe Chimneys & Flues
Asbestos HVAC Ducts
Asbestos Duct Vibration Dampers
Transite Pipe HVAC Ducts
Fireproofing containing Asbestos
LIST of Asbestos Containing Products
Mold Growth Resistance of Foam Insulation
Ceiling Tiles Containing Asbestos
Floor Tiles Containing Asbestos
Vermiculite Insulation Containing Asbestos
Asbestos Under the Microscope
Insulation Material Identification Guide
Mold Growth Resistance of Foam Insulation
Asbestos-Free Insulation Materials
Insulation Materials
  Asbestos Pipe Insulation
  Balsam Wool Batt Insulation
  Cotton Insulating Batts
  Cellulose loose fill insulation
  Fiberglass Insulation
  Foam Board Insulation
  Foam Spray Icynene Insulation
  Mineral Wool/Rock Wool Insulation
  Paper Duct Insulation
  Perlite Insulation
  Vermiculite Insulation

Technical Reviewers

Particular thanks are due to experts and also consumers who read these articles and suggest corrections, changes, and additions to the material. Content suggestions, technical corrections and content critique are invited for any of the content at our website.

• Daniel Friedman - principal author/editor of the InspectAPedia ^TM Website
• 7/07: thanks to Roger Hankey & Cheryll Brown, ASHI home inspectors in Minnesota, for the gas fireplace photographs. Mr. Hankey is a past chairman of the ASHI Standards Committee, serves as co-chairmain of ASHI legislative committee, and has served in other ASHI professional and leadership roles.
• 3/07: thanks to Gary Randolph, Ounce of Prevention Home Inspection, LLC Buffalo, NY, for attentive reading and editing suggestions. Mr. Randolph can be reached in Buffalo, NY, at (716) 636-3865 or email: gary@ouncehome.com
• 06/07: thanks for photographs of transite asbestos heating ducts, courtesy of Thomas Hauswirth, Managing Member of Beacon Fine Home Inspections, LLC and (in 2007) Vice President, Connecticut Association of Home Inspectors Ph. 860-526-3355 Fax 860-526-2942 beaconinspections@sbcglobal.net
• Technical reviewers are invited to comment or ask questions - contact us

More expert information on Asbestos Identification, Recognition, & Testing

More Information on Asbestos Contamination, Other Airborne Fiber Hazards, & Building Diagnostic Inspections and Repairs

• Asbestos: How to find and recognize asbestos in Buildings - visual inspection methods, list of common asbestos-containing materials
• Asbestos HVAC Ducts and Flues field identification photos and guide
• Fiberglass: Indoor Air Quality Investigations: Health Concerns About Airborne Fiberglass: Fiberglass in Indoor Air from HVAC ducts, and Building Insulation
• Enviro-Scare: Electric Power Lines, Electromagnetic Fields, Cancer Risk, & "Enviro-Scare" - The Normal Curve Cycle of Public Fear of Environmental Issues
• Dust from the World Trade Center collapse following the 9/11/01 attack: the lower floors of this building contained spray-on fire-proofing asbestos materials.
• Asbestos Information Links: Asbestos Detection, Testing, Recognition, Hazards, Field Photos, and Information Sources, including health-related links such as legal services and information about mesothelioma and other cancers.
• Asbestos Identification and Testing References
• Asbestos Identification, Walter C.McCrone, McCrone Research Institute, Chicago, IL.1987 ISBN 0-904962-11-3. Dr. McCrone literally "wrote the book" on asbestos identification procedures which formed the basis for current work by asbestos identification laboratories.
• Stanton, .F., et al., National Bureau of Standards Special Publication 506: 143-151
• Pott, F., Staub-Reinhalf Luft 38, 486-490 (1978) cited by McCrone

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