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Asbestos Roof Slates – contamination of roof void

In the late 19th century, Ludwig Hatschek added 10% asbestos and 90% portland cement together with water into his cardboard manufacturing machine. The end product was an invention that changed the roofs of the world; a durable and lightweight fire resisting fibre-cement-board. Following this invention, it was later discovered that the product had a detrimental […]

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