Asbestos fibres can be woven into products such as fabric, paper, yarn and string, with a variable asbestos content depending on the end use – sometimes up to 95%.
Woven material will typically contain chrysotile, but other asbestos types may be present. In the past these materials were often dyed to give the appearance of crocidolite (blue) asbestos.
Unusual woven products include window sash cords, caulking, gaskets for safes, filing cabinets and hot appliances such as ovens, boilers and kilns.
The risk to surveyors is relatively low as the materials may be enclosed within appliances. They are not generally used as construction materials but are more usually found in engineering products and equipment.