Why Was Asbestos Used In Roof Sheets

Corrugated roofing sheets made of asbestos is common in uk homes constructed prior to 2000.

Why was asbestos used in roof sheets.

According to one study among 300 families in yen bai thanh hoa 85 of households use asbestos roofing sheets but only 5 know about their harms. They can last for more than 40 years and if undamaged. These usually contain white asbestos chrysotile of which it comprises 10 15 asbestos fibres mixed with cement. Asbestos cement genericized as fibro or fibrolite short for fibrous or fibre cement sheet and ac sheet is a building material in which asbestos fibres are used to reinforce thin rigid cement sheets.

Mesothelioma approx 2 500 asbestos related lung cancer approx 2 500 asbestosis approx 460. The naturally occurring mineral was used in different types of building products including roofing sheets. Asbestos cement corrugated sheeting. Adding asbestos to the cement made the corrugated roofing sheets more heat resistant weatherproof and durable.

Why asbestos is still a problem after the ban. Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black. By 1999 all asbestos inlcuding white was banned from use in the uk. Asbestos was used in a number of different materials that were used to create walls which makes visual identification difficult.

It is black and pretty difficult to remove. Aib s were used in both commercial and domestic properties to create walls. Cement sheets are one of the most commonly used roofing products that the mineral is found in and there are still a large number of buildings around the uk that have an asbestos cement sheet roof. Some of the most common types of acm that were used to create walls include asbestos insulation board aib and cement sheets.

The problems with the roof sheets occur as they deteriorate with age and consequently become more brittle. It is generally easy to distinguish from other forms of corrugated materials such as colorbond and galvanised metal. Corrugated asbestos sheets were used in the roofing and siding of all types of buildings especially in factories and farms. Although invented at the end of the 19th century the material rose to necessity during world war ii to make sturdy inexpensive military housing and continued to be used widely.

Even today over 5000 people die each year because of asbestos exposure. About 90 of the imported asbestos is used to produce about 100 million m 2 of cement roofing sheets asbestos cement. Asbestos flatsheet because fibrous cement is much more water resistant than drywall flat sheets of asbestos cement found their way into the interiors of homes and businesses as walls and underlayment for flooring. Asbestos was typically used in the flat roofs of garages sheds barns factories warehouses and offices.