Question? Just ask us!
Free Encyclopedia of Building & Environmental Inspection, Testing, Diagnosis, Repair
ENVIRONMENTAL HAZARDS - INSPECT, TEST, REMEDY
ASBESTOS 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 CONSTRUCTION PRACTICES GUIDE
BEST ROOFING PRACTICES
BUILDING SAFETY HAZARDS GUIDE
BUILT UP ROOFS
CATHEDRAL CEILING INSULATION
CATHEDRAL CEILING VENTILATION
CERTIFICATIONS for ROOFING CONTRACTORS
CHIMNEY INSPECTION & REPAIRS
CHIMNEY FLASHING Mistakes & Leaks
CHOOSING A ROOFING CONTRACTOR
CLAY TILE ROOFING
CLAY, CONCRETE, FIBER CEMENT TILE INSTALLATION
COLD WEATHER ROOF TROUBLE
COOLING LOAD REDUCTION by ROOF VENTS
DEBRIS STAINING on ROOFS
DECKS, ROOFTOP CONSTRUCTION
DEFINITIONS of ENGINEERED WOOD OSB LVL etc
DISASTERS: BUILDING INSPECTION & REPAIR
DISPUTE RESOLUTION on ROOF JOB PROBLEMS
ENERGY SAVINGS in buildings
EPDM, RUBBER, PVC ROOFING
EPDM ROOF LEAK REPAIRS
EXTRACTIVE BLEEDING on SHINGLES
FELT UNDERLAYMENT REQUIREMENTS
FIBER CEMENT & FIBERBOARD ROOFING
FIRE RATINGS for ROOF SURFACES
FIRE RETARDANT PLYWOOD
FLASHING on BUILDINGS
FLASHING, ASPHALT SHINGLE VALLEYS
FLASHING, CHIMNEY Mistakes & Leaks
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 WINDOW 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
INSECT INFESTATION / DAMAGE
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
MODIFIED BITUMEN ROOFING
NOISE / SOUND DIAGNOSIS & CURE
NOISE CONTROL for ROOFS
PLASTIC ROOFING TYPES
PVC, EPDM, RUBBER ROOFING
ROLL ROOFING, ASPHALT
ROOF ARCHITECTURAL STYLES - PHOTO GUIDE
ROOF CLEANING RECOMMENDATIONS
ROOF COLOR RECOMMENDATIONS
ROOF DORMER TYPES - PHOTO GUIDE
ROOF INSPECTION SAFETY & LIMITS
ROOF JOB PROBLEMS, RESOLVING
ROOF LEAK DIAGNOSIS & REPAIR
ROOF NOISE TRANSMISSION
ROOF REPLACEMENT SNAFUs
ROOF SLOPE DEFINITIONS
ROOF VENTILATION SPECIFICATIONS
ROOFING FELT UNDERLAYMENT REQUIREMENTS
ROOFING MATERIALS, Age, Types
ROOFING TILE SHAPES & PROFILES
ROOFING UNDERLAYMENT BEST PRACTICES
RUBBER, EPDM, PVC ROOFING
SADDLE CONSTRUCTION at CHIMNEYS
SIDING TYPES, INSTALLATION, DEFECTS
SLATE ROOF INSPECTION & REPAIR
SLATE ROOF REPAIRS
SNOW GUARDS & SNOW BRAKES
SOUND CONTROL in buildings
STAIN & BIODETERIORATION AGENT CATALOG
STAINS on & in BUILDINGS, CAUSES & CURES
STAIN DIAGNOSIS on BUILDING EXTERIORS
STAIN DIAGNOSIS on BUILDING INTERIORS
STAIN DIAGNOSIS on ROOFS
STAIN DIAGNOSIS on STONE
STANDARDS for ROOFING
STONE CLEANING METHODS
STRESS SKIN INSULATED PANELS
TEST LABS - ROOF SHINGLE
Thermal Expansion Cracking of Brick
THERMAL EXPANSION of HOT WATER
THERMAL EXPANSION of MATERIALS
THERMAL IMAGING, THERMOGRAPHY
THERMAL IMAGING MOLD SCANS
THERMAL MASS in BUILDINGS
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 ROOFING
MASONITE WOODRUF FIBERBOARD ROOFING
ROOFING COMPANIES CONTACT INFO
WIND DAMAGE to ROOFS
WOOD SHAKE & SHINGLE ROOFING
WORKMANSHIP & ROOF DAMAGE
ZINC METAL ROOFING
Asbestos cement roofing wear & damage signs: this article provides a photo guide and text that can identify the condition of cement asbestos roofing products like asbestos-cement roof shingles. Our page top photo shows a cement-asbestos roof that is worn out and leaky. 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.
Green links show where you are. © Copyright 2013 InspectAPedia.com, All Rights Reserved.
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.
Here are signs of trouble with asbestos-cement roofs:
How To Identify Cal-Shake Shakes (Cal-Shake, Cal-Slate, Cal-Clay Roofing)
Cal-Shake Shakes are a fiber cement roofing product made to look like wood shakes. Cal-Shake Inc. also manufactured Cal-Slate and Cal-Clay, both of which are included in this settlement. Cal-Shake Shakes were manufactured as shakes and distributed between 1980 and 1995. Please review the information below to see if you have Cal-Shake Shakes installed on your roof. If you take the steps suggested below and are still having trouble determining whether you have a Cal-Shake Shake Roof, please call 1-866-844-0600. Here is a Cal_Shake Claims Form.
You do not have a Cal-Shake Shake Roof if:
The shakes on your roof are made of wood The cement composite shakes on your roof were manufactured by: American Cemwood, NatureGuard, Terra Shake, FireFree®, Hardie Shake, Monier, Owens Corning Mira Vista, Protex.
To be a member of the New Cal-Shake Settlement Class, your Cal-Shake roof must have been manufactured between February 1, 1986 and March 31, 1995. The date of manufacture is not marked on the Shake, but if your roof was installed within this period you are probably a member of the New Cal-Shake Settlement Class. People whose roofs were installed very early in this time period might have Old Cal-Shake roofs.
- Web Search 07/12/2010, original source http://www.calshakeclassaction.com/ProductIDnew.html
HardiShake©, MaxiShake©, and Cemwood© produced by James Hardie Building Products (JHBP) and sold as lifetime roofing, were subject of a class action lawsuit for early roof wear or failures that appeared as softening, breaking, chipping, cracking, delaminating, or color changes. This product series was made of a composite fiber cement shingle designed as a mixture of cement, sand, and wood-cellulose fibers.
On February 14, 2002, the Court granted final approval of the Settlement.
If you own or owned a home or structure with JHBP Roof Shakes, you may be entitled to file a claim for monetary compensation.
A proposed settlement has been reached in a class action lawsuit concerning roofing products manufactured or distributed by James Hardie Building Products, Inc. ("JHBP") under brand names such as HardiShake and HardiSlate, among others. The settlement establishes a program by which claimants can recover the cost of roof replacement, under the terms of the Settlement Agreement. Please read the Court Ordered Notice and other materials available at this site explaining your rights including how to register to receive a Claim Form.
If you have additional questions, you may call 1-888-780-8579 or email email@example.com
- Web Search 07/12/2010, original source http://www.hardieroofingclaims.com/
George Podrug provided Masonite Woodruf™ roofing information for home inspectors in 1999.
Defective Hardboard Siding (similar products): see these detailed articles:
Also see SIDING, ASBESTOS CEMENT and
Frequently Asked Questions (FAQs) about cement asbestos roofing wear, damage, warranty claims, & about Hardie Shake shingles
Do HardiShakes Contain Asbestos?
Question: I am trying to find out if the old Hardie Shake shingle contained any asbestos?
Reply: Hardie Shakes, Asbestos? Unlikely - Wood Fiber Based Products are Not Asbestos
Modern HardieShake shingles are a [wood-] fiber cement product produced by mixing sand, wood fibers, and cement, rolled to about 1/4" thick and laminated to resist moisture. HardiShake shingle failures manifest as cracked shingles and on older roofs that we have inspected, softening, flaking, and delaminating.
Asbestos fibres would not be expected to be used in wood fiber based products: for example these wood fiber based cementious shingles were designed specifically in search for a replacement for cement-asbestos shingles. So we would not expect to find asbestos in a wood-fiber shingle product.
You should contact James Hardie Building Products in the U.S. or other countries directly for product details, brochures, and installation information.
James Hardie was indeed involved in asbestos liability claims regarding asbestos as we discuss at James Hardie Company, Asbestos, Fiber Cement Siding, & HIstory found in our article JamesHardie HardiePlank Siding. (Asbestos production, distribution, and used in building products, and more obscure, asbestos was used on occasion in certain carpet padding (see CARPETING & INDOOR AIR QUALITY) made from recycled bags and asbestos waste was used in driveways and garage floors).
Questions & answers or comments about cement asbestos roofing wear, damage, warranty claims, & about Hardie Shake shingles.
Ask a Question or Enter Search Terms in the InspectApedia search box just below.
Technical Reviewers & References
Related Topics, found near the top of this page suggest articles closely related to this one.