Asbestos “Limpet” Sprayed Coating
This is a loosely bonded, highly fibrous coating. Usually only one type
of asbestos fibre is present in this material with an asbestos content of
at least 50%. This form of coating is normally encapsulated by some
form of surface seal. If the surface seal is defective, ‘Limpet’ coating is
potentially very friable and can suffer from unexpected collapse.
Asbestos thermal insulation (plastic magnesia type)
This is a loosely bonded fibrous composition, with binder and filler
powders, that is mixed on site and applied by hand. The asbestos
content is often highly variable, but some 15% to 40% of asbestos is
commonly present. A mixture of one or more types of asbestos fibre
may be present in the material. Some form of painted surface seal
normally encapsulates this form of insulation. If the surface seal is
defective this form of insulation is very friable.
Asbestos thermal insulation (corrugated paper type)
This is a factory made sectional product formed of corrugated asbestos
paper. The asbestos paper contains up to 100% of white asbestos
(Chrysotile), but the material is not liable to be friable under normal
Asbestos Insulating Board
Asbestos insulating board (“Asbestolux” type) is a relatively soft off-white board,
which is deceptively friable. The total asbestos content of insulating board is
normally between 16 – 40%. The most common form of asbestos insulating
board contains brown asbestos (Amosite) alone, or with a few percent of white
Asbestos cement products normally contain about 10-15% of asbestos, in a hard
durable, non-friable cement matrix. The most common form of asbestos cement
contains white asbestos alone.
Asbestos Flash Strips (Fused Switchgear/Fuse boxes)
In many locations asbestos flash strips are to be found within fused switchgear/
fuse boards behind ceramic fuses. The flash strips are formed from a raw, friable
asbestos blanket material which, protects the ceramic from damage when the
fuse wire melts. Such fused switchgear/fuse boxes are classed as asbestos
contaminated and must have ‘asbestos warning’ signs applied.
Thermoplastic Floor Tiles
Typically used throughout many variations of building as decorative
flooring. The asbestos is of a very low content within this type and is
used as a bonding material.
Similar to thermaplastic floor tiles in its asbestos content and
decorative use. Used in many buildings as a decorative finish. Again, a
low content of asbestos used as a bonding material.