Asbestos Roof Tiles Nz

Houses built up until the late 1990s should be considered as possibly containing asbestos materials or products.

Asbestos roof tiles nz.

All mastic or bitumen based pressed metal roof tiles should be suspected of containing asbestos. Ahi roofing limited intends to work with the roofing association of new zealand and to help installers and removalists deal with these issues in practice. Due to the presence of asbestos decramastic tiles are no longer manufactured and have been replaced. Asbestos cement materials will typically last about 50 60 years any asbestos cement roofing that shows evidence of damage such as broken roofing or noticeable surface weathering may need to be replaced.

Democrastic tile roofs were manufactured and widely used in new zealand during the 1970s and 1980s. In new zealand most houses built before 1975 have a high probability of containing asbestos building products and materials as well as asbestos insulation products in their construction. Decramastic tiles are a scallop shaped metal tiles also known by other names such as pressed metal tiles decrabond and stone chip roofs. But other types of roof tiles containing asbestos also exist.

Tiles which contain asbestos include mastic or bitumen based pressed metal roof tiles that were produced prior to the early 1980s. Chrysotile asbestos is the type usually present in asbestos containing materials in new zealand houses. Also see corrosion where new materials need to be matched with existing ones such as tiles or steel roofing see matching new to existing. Asbestos in early pressed metal stone coated roofing tiles prior to early 1980s.

Asbestos in new zealand houses. This will happen as soon as possible in 2017. Mastic or bitumen was the most common material used to adhere the stone chip to the pressed metal at that time. Review of the scientific evidence of non occupational risks.

Some versions of mastic or bitumen based pressed metal roof tiles produced prior to the early 1980s contain asbestos. For now we recommend care whenever pressed metal roof tiles containing asbestos are or may be present in your workplaces. Chrysotile fibres tend to break across the fibre so become shorter and remain thicker than the crocidolite and amosite fibres. Asbestos is found in some vinyl floor tiles and linoleum and as backing on vinyl sheet flooring and adhesives.

Asbestos exposure in new zealand. Some roofing and siding shingles are made of asbestos cement. The fibres of health significance are those that can be inhaled.