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 Mobile ViewENVIRONMENTAL HAZARDS - INSPECT, TEST, REMEDY ASBESTOS CEMENT & FIBER CEMENT ROOFING Asphalt-asbestos Roofing Materials Cement-asbestos roof shingles Environmental Issues - Asbestos Roofing/Siding Wear Signs on Cement Asbestos Shingles Maintenance Tips for Asbestos Cement Shingles Replacements for Asbestos Cement Shingles Corrugated Cement-Asbestos Roofing Asbestos Roof Power Washing Asphalt-asbestos Paints & sealants Warranty & Class Actions, Fiber Cement Shingles ASBESTOS MATERIAL REGULATIONS ASBESTOS REGULATION Update ASBESTOS FLOORING HAZARD REDUCTION ASBESTOS-FREE INSULATION MATERIALS ASBESTOS IDENTIFICATION IN buildings ASBESTOS ROOFING / SIDING DUST ROOFING INSPECTION & REPAIR ASPHALT ROOF SHINGLES ATTIC CONDENSATION CAUSE & CURE BEST ROOFING PRACTICES BUILDING SAFETY HAZARDS GUIDE BUILT UP ROOFS CEMWOOD ROOFING CERTIFICATIONS for ROOFING CONTRACTORS CHIMNEY INSPECTION & REPAIRS Chimney Flashing Mistakes & Leaks< CHOOSING A ROOFING CONTRACTOR CLAY TILE ROOFING CLAY, CONCRETE, FIBER CEMENT ROOF TILES COOLING LOAD REDUCTION by ROOF VENTS CORRUGATED ROOFING COPPER ROOFING DEBRIS STAINING on ROOFS DECKS, ROOFTOP CONSTRUCTION DEFINITIONS of ENGINEERED WOOD OSB LVL etc DISASTERS: BUILDING INSPECTION & REPAIR SAFEY EARLY ROOF FAILURE DIAGNOSTIC QUESTIONS ENERGY SAVINGS in buildings EPDM ROOFS EXTRACTIVE BLEEDING on SHINGLES FELT UNDERLAYMENT REQUIREMENTS FIBER CEMENT & FIBERBOARD ROOFING FIRE RATINGS for ROOF SURFACES FIRE RETARDANT PLYWOOD FLASHING, ASPHALT SHINGLE VALLEYS FLASHING, CLAY TILE ROOFS FLASHING MEMBRANES PEEL & STICK FLASHING for METAL ROOFS FLASHING ROOF WALL DETAILS FLASHING ROOF-WALL SNAFU FLASHING SIDING DETAILS FLASHING WALL DETAILS FLASHING WOOD ROOF DETAILS FLAT ROOF MOISTURE & CONDENSATION GALVANIC SCALE & METAL CORROSION Green House or Solarium Roof Leaks GUTTERS & DOWNSPOUTS HAIL DAMAGED SHINGLES HEAT TAPES & CABLES on Roofs for Ice Dams HOT ROOF DESIGNS: Un-Vented Roof Solutions HOUSEWRAP INSTALLATION DETAILS HUMIDITY LEVEL TARGET ICE DAM PREVENTION INSULATION IDENTIFICATION GUIDE INSULATION INSPECTION & IMPROVEMENT LEAD POISONING HAZARDS GUIDE LEAKY ROOF DIAGNOSIS & REPAIR LEED GREEN BUILDING CERTIFICATION LOW SLOPE ROOFING MASONITE WOODRUF FIBERBOARD ROOFING MEMBRANE & SINGLE PLY ROOFS METAL ROOFING MODIFIED BITUMEN ROOFING NOISE CONTROL for ROOFS NOISE / SOUND DIAGNOSIS & CURE PLASTIC ROOFING TYPES ROLL ROOFING, ASPHALT ROOF ARCHITECTURAL STYLES - PHOTO GUIDE ROOF CLEANING RECOMMENDATIONS ROOF DORMER TYPES - PHOTO GUIDE ROOF INSPECTION SAFETY & LIMITS ROOF SLOPE DEFINITIONS ROOF VENTILATION SPECIFICATIONS ROOF VENTING ENERGY SAVING DETAILS ROOFING FELT UNDERLAYMENT REQUIREMENTS ROOFING MATERIALS, Age, Types ROOF NOISE TRANSMISSION ROOFING TILE SHAPES & PROFILES ROOFING UNDERLAYMENT BEST PRACTICES SADDLE CONSTRUCTION at CHIMNEYS SLATE ROOF INSPECTION & REPAIR SNOW GUARDS on SLATE & METAL ROOFS SOD ROOFING SOUND CONTROL in buildings STAIN & BIODETERIORATION AGENT CATALOG STAINS on buildings - QUICK GUIDE STAIN DIAGNOSIS on BUILDING EXTERIORS STAIN DIAGNOSIS on BUILDING INTERIORS STAIN DIAGNOSIS on ROOFS STAIN DIAGNOSIS on STONE STANDARDS for ROOFING STONE CLEANING METHODS STONE ROOFING STRESS SKIN INSULATED PANELS TEST LABS - ROOF SHINGLE THATCH ROOFING THERMAL EXPANSION of MATERIALS THERMAL MASS in buildings TILE ROOFING TRUSS UPLIFT, ROOF TRUSSES, Floor & Roof UNDERLAYMENT REQUIREMENTS on ROOFS WALK-ON ROOF SURFACES WARRANTIES for ROOF SHINGLES SHINGLE WARRANTY EVALUATION SHINGLE CLASS ACTION & CONTACT INFO REPORTING SHINGLE FAILURES ROOF FAILURE REPORT FORM ASBESTOS CEMENT & FIBER CEMENT ROOFING CEMWOOD ROOFING MASONITE WOODRUF FIBERBOARD ROOFING ROOFING COMPANIES CONTACT INFO WIND DAMAGE to ROOFS WOOD SHAKE & SHINGLE ROOFING WORKMANSHIP & ROOF DAMAGE ZINC METAL ROOFING More Information |
Here is our photo guide and text that can identify the condition of cement asbestos roofing products like asbestos-cement roof shingles. Our photo (page top) shows that someone tried to secure breaking pieces of cement asbestos roof shingles by using a roofing stapler - not a proper repair. © 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 cement roof shingles were in popular use in the U.S. from the 1920's (est) through the 1960's (est) and were sold in the U.S. into the 1970's and according to some sources even in the 1980's.. The mixture of asbestos fibers and portland cement to form a hard material that was was durable and fire resistant is credited to Ludwig Hatschek who, in 1900, came up with the name Eternit associated with a U.S. producer of these products. The typical life expectancy of an cement asbestos shingle roof was given as 30 years, But we have seen these roofs that were now 50 years old in good condition. Typical roof wear or failure patterns are either failure of the shingle fasteners or broken and falling shingles. Maintenance Tips for Asbestos Cement Roof Shingles
But because asbestos cement roofing is easily damaged by a heavy-footed worker unfamiliar with the materials involved, asbestos cement roofs have to be repaired and maintained with the same care and expertise as slate roofs. This means that roof repairs may cost more even though the materials should also last longer than some competing roof systems. Work by an inexperienced contractor can ruin a cement asbestos shingle roof and lead to complete roof failure. Our photo at page top shows the use of a roofing stapler to secure sliding cement asbestos shingles - a foolish repair that causes further leaks and damage. This photo (above-left) shows thin, worn, fragile cement asbestos roof shingles that are very broken up. If you see this condition over 25% of the roof surface, repair is probably not economical and a complete re-roofing or roof-over is needed. Small roof repairs to individual shingles can be made using copper or aluminum flashing material -- it will often weather to a color that looks a lot like the remaining cement asbestos shingles, and this approach minimizes the chances of breaking more shingles during the repair. Follow our slate roof repair advice at SLATE ROOF INSPECTION & REPAIR. Cleaning stains, mold algae, lichens from cement-asbestos roofsAs we discuss at Power Washing Roofs we do not recommend power-washing asbestos-cement nor any other roofing. See Black Stain Removal & Prevention for advice on diagnosing, cleaning, and preventing stains on roofing. Sources of Replacements for Asbestos Cement Roof ShinglesOne manufacturer of cement-asbestos shingles was Ruberoid Co., who made 8" x 16" tapered singles with a surface pattern resembling wood and called "Ru-Ber-Oid-Eternit Tapered Timbertex Asbestos-Cement Shingles." 260 singles/525 lbs/square, were available in a wide range of colors. Contemporary roofing product manufacturers make reinforced fiber-cement roofing shingles and other roofing products which look like, perform similarly to, and need to be installed similarly to the original asbestos-cement shingles - but these new products are free of asbestos. The replacements for asbestos cement roofing products are reinforced with a variety of fibers including fiberglass. Other replacements for asbestos-cement roofing use both different fibers and a different aggregate (perlite) to replace the asbestos. Some of the substitute products have been in use for more than 30 years (2008). For maintenance or replacement of asbestos-cement roof shingles (or wall siding) contact Supradur Manufacturing Corporation, PO Box 908, Rye NY 10580 800-223-1948, or from within New York State, call 914-967-8230. Ask about their Supradur(R) mineral fiber shingles. For handling and disposal guidance concerning old roofing material contact the US EPA, your state Department of Environmental Protection/Conservation, or your local building and health departments. Also see our articles at ROOFING INSPECTION & REPAIR Questions & Answers regarding this article. Ask a Question or Search InspectAPediaHTML Comment Box is loading comments...
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ASBESTOS FLOORING HAZARD REDUCTION
For more information about fiberglass as an indoor air quality concern see:
For more information about asbestos as an indoor air quality concern with focus on easy ways to identify asbestos materials in buildings, see:
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