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ENVIRONMENTAL HAZARDS - INSPECT, TEST, REMEDY
ACOUSTICAL SEALANT CHOICES
AGE of a BUILDING - how to determine
AIR BYPASS LEAKS
AIR LEAK DETECTION TOOLS
AIR LEAK MINIMIZATION
AIR LEAK SEALING PROCEDURE
AIR POLLUTANTS, COMMON INDOOR
ALLERGENS in BUILDINGS, RECOGNIZING
ANIMAL ALLERGENS / PET DANDER
APPLIANCE EFFICIENCY RATINGS
ARCHITECTURE & BUILDING COMPONENT ID
ASBESTOS CEILING TILES, Asbestos-Containing
ASBESTOS CEMENT ROOFING
ASBESTOS CEMENT SIDING
ASBESTOS DUCTS, HVAC
ASBESTOS-FREE INSULATION MATERIALS
ASBESTOS IDENTIFICATION IN buildings
ASBESTOS FLOORING HAZARD REDUCTION
ASBESTOS FLOOR TILE IDENTIFICATION
ASBESTOS FLOORING REMOVAL GUIDE
ASBESTOS LIST of PRODUCTS
ASBESTOS MATERIAL REGULATIONS
ASBESTOS MATERIAL REGULATIONS Update
ASBESTOS MATERIAL REGULATIONS, OSHA
ASBESTOS PHOTO GUIDE to Materials
ASBESTOS REMOVAL, Amateur, Incomplete
ASBESTOS REMOVAL CERTIFICATIONS
ASBESTOS REMOVAL, Wetting Guidelines
ASBESTOS RISK ASSESSMENT
ASBESTOS TESTING LAB LIST
ASBESTOS UNDER the MICROSCOPE
ROOF ICE DAM LEAKS
BASEMENT HEAT LOSS
BUCKLED FOUNDATIONS due to INSULATION?
BUILDING NOISE DIAGNOSIS & CURE
CATHEDRAL CEILING INSULATION
CEILING FINISHES INTERIOR
CEILINGS, DROP or SUSPENDED PANEL
CEILINGS & WALLS, PLASTER TYPES
CERAMIC TILE FLOOR, WALL
CERAMIC TILE, ASBESTOS in?
CHIMNEY INSPECTION DIAGNOSIS & REPAIR
CHINESE DRYWALL HAZARDS
DEW POINT CALCULATION for WALLS
EFFLORESCENCE, Salts & White / Brown Deposits
FIBERGLASS INSULATION MOLD
FLOOR TILE HISTORY & INGREDIENTS
FLOOR TILES ASBESTOS
FLOOR TYPES & DEFECTS
HEAT LOSS in BUILDINGS
HOUSE DOCTOR, how-to be
HUMIDITY LEVEL TARGET
ROOF ICE DAM LEAKS
INDOOR AIR QUALITY IMPROVEMENT GUIDE
INSULATION FACT SHEET- DOE
INSULATION IDENTIFICATION GUIDE
INSULATION R-Values & Properties
METAL LATH, PLASTER & STUCCO
METHANE GAS SOURCES
MOISTURE CONTROL in BUILDINGS
MOLD: A COMPLETE GUIDE TO MOLD
Museum Artifact Preservation
NOISE / SOUND DIAGNOSIS & CURE
ODORS GASES SMELLS, DIAGNOSIS & CURE
PAINT FALURE, DIAGNOSIS, CURE, PREVENTION
PLASTER & BEAVERBOARD & DRYWALL
PLASTER BULGES & PILLOWS
PLASTER LATH, METAL
PLASTER, LOOSE FALL HAZARDS
PLASTER TYPE IDENTIFICATION
PLASTER VENEER Best Practices
ROOF VENTILATION SPECIFICATIONS
SAFETY HAZARDS & INSPECTIONS
SEARS KIT HOUSES
SOUND CONTROL in buildings
SPLITS & CRACKS in STRUCTURAL WOOD BEAMS
STAIN DIAGNOSIS on BUILDING EXTERIORS
STAIN DIAGNOSIS on BUILDING INTERIORS
STUCCO WALL METHODS & INSTALLATION
STRUCTURAL DAMAGE PROBING
SWEATING (CONDENSATION) on PIPES, TANKS
Thermal Expansion Cracking of Brick
THERMAL EXPANSION of MATERIALS
THERMAL IMAGING, THERMOGRAPHY
THERMAL MASS in BUILDINGS
THERMAL TRACKING Indicates Heat Loss
VAPOR BARRIERS & CONDENSATION in BUILDINGS
VENTILATION in BUILDINGS
VINYL CHLORIDE HEALTH INFO
VOCs VOLATILE ORGANIC COMPOUNDS
WALL CONSTRUCTION BARRIER vs CAVITY
WATER ENTRY in buildings
WINDOWS & DOORS
WINTERIZE A BUILDING
WOOD Burning Heaters Fireplaces Stoves
WORLD TRADE CENTER 9-11 DUST PHOTOS
Asbestos that can often be safely left in place: this article illustrates asbestos insulating and other products which are in good condition and discusses what to do about the asbestos material in that case. 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.
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Examples of Visually-recognizable Asbestos Materials in Buildings that are in Good Condition and may be able to remain in place
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.
The ceiling tiles at left may contain asbestos. They are in good condition and are not subject to mechanical damage by the occupants of the building.
If these ceiling tiles are to be removed, the demolition could release high levels of asbestos fibers - appropriate asbestos removal procedures would be wise.
Also see ASBESTOS DUCTS, HVAC 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.
When asbestos pipe insulation is in good, un-damaged condition like this, and when it is found in an area not subject to mechanical damage, current advice is to leave this material alone.
However where this material was used on heating or other plumbing pipes, there remains the possibility that some of it will eventually have to be disturbed and removed when leaks occur and repairs to the piping are necessary.
Leaks in heating pipes should occur less often than in other plumbing lines, so this risk may be pretty small.
Use of asbestos for pipe coverings has been banned in the U.S. since 1975.
This ceiling fireproofing used in an office building basement storage area was readily identified as tremolite and was considered hazardous even though it was in good condition.
This product was quite friable, subject to being disturbed by ongoing work in the area, and needed professional asbestos removal.
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Questions & answers or comments about when asbestos materials can or should be left alone & how to recognize asbestos materials that are undamaged and in good condition.
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