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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.
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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. [Protex roof slates or shingles are discussed at WARRANTIES for ROOF SHINGLES - Ed.]
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 firstname.lastname@example.org
- 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:
Continue reading at ASBESTOS CEMENT SIDED HOME RESALE r select a topic from the More Reading links shown below.
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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.
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
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