Does Fiber Cement Siding Contain Asbestos

Although some of the earlier versions of fiber cement siding did indeed have some asbestos particles blended in fiber cement was actually designed to replace the asbestos siding products to create a safer environment for the installers and the home s residents.

Does fiber cement siding contain asbestos.

Patent 1 793 810 issued february 24 1931. While older homes will likely contain asbestos in roofing insulation and tiles it can also be present in exterior siding. These shingles are generally 12 by 24 inches and the bottom tends to have a wave like pattern though that is not always the case. Today there are several companies that produce fiber cement siding and building products.

Most fiber cement products come with a warranty of up to 50 years thanks to a natural resistance to fire termites and rot. Asbestos ranks high on the list of dangerous substances because of its toxic and carcinogenic properties when airborne. Fiber cement siding does not contain asbestos. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar.

Planks were up to 5 m long and became available with a wood grain finish. Waterproof board and method of preparing same u s. Soakers were used over joints and at corners. These patents assigned to flintkote give more details of the history and constituents of flintkote insulating sheathing.

If you suspect that your siding may contain asbestos there is no need for alarm. Fiber cement siding was manufactured as a replacement for asbestos siding which was popular for its attributes of being fire retardant and rot and insect proof. There is no legal requirement to do so nor is there significant real estate benefit. If your siding fits either of these descriptions you should consider having it tested.

Because fiber cement siding manufactured in north america after around 1978 was made without using asbestos in those later products and because those non asbestos fiber cement shingles included products that by eye were an exact visual match for their older asbestos containing brothers and sisters already installed a building built. Despite its many benefits fiber cement siding comes with its share of problems ranging from adverse. Asbestos cement planks asbestos cement planks made in new zealand were readily available during the 1970s. Cement asbestos siding tiles do not need to be removed simply because they contain asbestos.

They were installed as overlapping units directly to the framing. They were considered a lower cost utilitarian cladding. These materials are known as fiber cement siding and they contain no asbestos. It is formulated using sand cement and cellulose fibers.

Fiber cement siding is sometimes confused with asbestos cement siding a shingle format type of siding widely used in the first half of the 20th century and which has since been discontinued. The company prodcued roofing products containing asbestos and also asbestos cement shingle siding.