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 Mobile ViewENVIRONMENTAL HAZARDS - INSPECT, TEST, REMEDY AIR CLEANER PURIFIER TYPES AIR FILTER EFFECTIVENESS AIR FILTERS, FIBERGLASS PARTICLES AIR FILTERS for HVAC SYSTEMS AIR FILTERS, OPTIMUM INDOOR AIR FILTERS, SOURCES FOR AIR FILTERING STRATEGIES AIR FILTERING CONTINUOUS FAN OPERATION AIR HANDLER / BLOWER UNITS AIR LEAK DETECTION TOOLS AIR POLLUTANTS, COMMON INDOOR Air Quality Improvement Strategies AIR LEAK SEALING PROCEDURE AIR SEALING STRATEGIES AIR TEST FOR MOLD: ACCURACY AIR TEST SAMPLING CASSETTE STUDY AIRBORNE MOLD SPORE COUNT ACCURACY ALLERGEN TESTS for buildings ALLERGY TESTS for PEOPLE ALLERGY TEST ACCURACY ANIMAL ALLERGENS / PET DANDER ANIMAL ENTRY POINTS in buildings ASBESTOS CLEANUP COMPANIES ASBESTOS ROOFING / SIDING DUST ASBESTOS FLOORING HAZARD REDUCTION ASBESTOS-FREE INSULATION MATERIALS ASBESTOS IDENTIFICATION IN buildings ASBESTOS AIR DUCTS Asbestos Air Duct Vibration Dampers ASBESTOS in CARPETING, PADDING ASBESTOS CEILING TILES, Asbestos-Containing ASBESTOS DUCTS, HVAC ASBESTOS DUCT INSULATION, Asbestos Paper ASBESTOS DUCTS, Transite Pipe ASBESTOS FIREPROOFING SPRAY-On Coatings ASBESTOS FLOOR TILE IDENTIFICATION ASBESTOS FLOOR TILE Laboratory Procedures ASBESTOS FLOOR TILE PHOTO ID GUIDE ASBESTOS FLOORING HAZARD REDUCTION ASBESTOS FLOORING REMOVAL GUIDE Asbestos Foamed-Over ASBESTOS INSULATION ASBESTOS PAPER DUCT INSULATION ASBESTOS PIPE INSULATION ASBESTOS ROOFING, CEMENT & FIBER CEMENT ASBESTOS ROOFING / SIDING DUST ASBESTOS SIDING CEMENT & FIBER CEMENT Asbestos in unusual places Asphalt-asbestos Paints & sealants Carbon Nanotube Materials TRANSITE PIPE AIR DUCTS Transite Pipe Chimneys & Flues Transite Pipe Water Supply Piping VERMICULITE INSULATION ASBESTOS FLOORING HAZARD REDUCTION ASBESTOS FLOORING REMOVAL GUIDE ASBESTOS List of Asbestos-Containing Products ASBESTOS MATERIAL REGULATIONS ASBESTOS MATERIAL REGULATIONS Update ASBESTOS MATERIAL REGULATIONS, OSHA Roofing/Siding ASBESTOS Photo Guide to Materials / Products ASBESTOS RISK ASSESSMENT ASBESTOS REMOVAL, Amateur, Incomplete Asbestos Removal, Certification ASBESTOS REMOVAL, Wetting Guidelines Asbestos Under the Microscope ATTORNEYS and EXPERT WITNESSES Backdrafting Appliances BIBLIOGAPHY for ENVIRONMENTAL HEALTH, MOLD, IAQ BIOGAS PRODUCTION & USE BIOLOGICAL POLLUTANTS BIOLOGICAL POLLUTANTS in the HOME - EPA BLACK MOLD, HARMLESS COSMETIC BLACK MOLD, TOXIC & ALLERGENIC BLEACHING MOLD, Advice about BLOWER DOORS & AIR INFILTRATION BLUE vs YELLOW COMBUSTION FLAMES Bisphenol-A, BPA BLEACHING MOLD, Advice about BOOK MOLD, Moldy Book Cleaning BOOK MOLD, Moldy Book Cleaning BOOKSTORE - ENVIRONMENTAL BUILDING SAFETY HAZARDS GUIDE INSULATION IDENTIFICATION GUIDE ASBESTOS-FREE INSULATION MATERIALS ASBESTOS IDENTIFICATION IN buildings Asbestos Pipe Insulation Balsam Wool Batt Insulation BLOWN-IN INSULATION BRICK LINED WALLS BRICK VENEER WALL INSULATION Cellulose loose fill insulation Ceramic Insulation Concrete insulation, light-weight Cotton Insulating Batts Fiberglass Insulation Foam Board Insulation Foam Insulation Types - Visual Id Homasote & Other Insulating Board Icynene Foam Spray Insulation Insects & Foam Insulation Mineral Wool - Rock Wool Insulation Mold in Fiberglass Insulation Mold on Books, Book Conservation Mold on Fiberboard Insulating Sheathing MOLD PREVENTION AFTER FLOODING MOLD RESISTANT CONSTRUCTION Mold in Foam Insulation Paper Duct Insulation Perlite Insulation PHENOLIC FOAM INSULATION POLYISOCYANURATE FOAM INSULATION POLYISOCYANURATE FOAM BELOW SLABS POLYSTYRENE FOAM INSULATION STRESS SKIN INSULATED PANELS STUCCO OVER FOAM INSULATION SUPER HI-R INSULATION SUPERINSULATION RETROFIT Urea Formaldehyde Foam Insulation UFFI URETHANE FOAM Deterioration, Outgassing VERMICULITE INSULATION INSULATION LOCATION - WHERE TO PUT IT INSULATION R-Values & Properties LEED GREEN BUILDING CERTIFICATION LOG HOME ENERGY EFFICIENCY LOG HOME GUIDE ASBESTOS Photo Guide to Materials / Products MOLD in FOAM INSULATION, RESISTANCE More Information |
This article describes common asbestos fireproofing materials used in buildings on ceilings and walls. We have not prepared but will add description of spray-on fiberglass coatings used on steel columns and ceilings in high rise buildings such as the lower floors of the NY World Trade center. 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 ASBESTOS FIREPROOFING SPRAY-On Coatings. 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 2012 InspectAPedia.com, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use page top links to major topics or use links at the left of each page to navigate within topics and documents at this website. Green links show where you are in a document series or at this website. ASBESTOS FIREPROOFING - Tremolite Asbestos-containing Spray-on or Slab (Tremolite) Fireproofing in buildingsAsbestos based building fireproofing materials including both the thick Tremolite asbestos panels below, chrysotile asbestos panels and asbestos-containing paints and coatings for fire resistance, are described here. Also see ASBESTOS FIREPROOFING SPRAY-On Coatings.
Slabs of 1" thick asbestos insulating board, typically 6" wide, were used as fireproofing on commercial building ceilings and possibly walls. According to some experts, this material is usually Tremolite asbestos, a particularly hazardous form of asbestos which occurs as both fibrous asbestiform (see 1st lab micro photograph) and non-fibrous granular form which in our samples includes high percentage of ultra-small sub-micron asbestos particulates (see 2nd lab micro photograph). This material when viewed overhead from below, can appear to be simple concrete. But a closer look shows its fibrous nature, and inclusions which do not resemble concrete. Unlike cementious asbestos board, this material is soft, very friable, and easily damaged or disturbed. [This tremolite insulation was removed from the building by experienced professional asbestos abatement workers. It should not be handled by amateurs.] Microphotographs taken in our forensic laboratory show what this particular asbestos material looks like under high magnification and polarized light. See Asbestos Under the Microscope. Not commonly used in single family residences or small buildings, but common in high-rise buildings into the 1970's, including the lower floors of the World Trade Center, leading to asbestos fiber release at "ground zero" on 9/11/00. At some locations where this material was sprayed on the under-side of steel roofing and on steel columns, it may be hidden by finish materials and enclosures. Spray-on Fire Resistant Materials May or May Not Contain Asbestos
Some modern spray-on building fireproof or fire-resistant coatings look a bit like products used in the 1970's and prior, but the new materials do not contain asbestos as its use in this application is now prohibited. Continue reading in this article using direct links to the sections listed below, or This photograph of building construction with a spray-on fire resistant coating was taken in the Bronx, New York, in 2008.
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