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WRRCS's
experience of protective coating systems for roofs goes
back over many years, The Astrothane 2000 Polyurethane
system for roofs, installed by WRRCS's directly
employed work force, is capable of extending the
operational life of suitable roofs by up to 20 years.
WRRCS have developed many techniques with the
system, particularly on profiled sheeted roofs where
sealing of overlaps and bolt heads only can dramatically
reduce the cost of sealing the
structure. |
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Standard colours |
terracotta |
slate green |
aluminium |
black | |
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 ...because Astrothane 2000 is a single
component, pitch free, liquid applied polyurethane
membrane which does not contain T.D.I. or coal tar
pitch derivatives and is therefore not classified
as hazardous. |
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Coal tar pitch contains certain aromatic
compounds which have been found to be dangerous
to health and T.D.I. is a very volatile
isocyanate. Under current legislation the
inclusion of these materials in any formulations
results in hazardous classification.
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Astrothane 2000 is formulated from M.D.I.
based polyurethane prepolymers which have a low
volatility and is supplied as a single component.
It has all the advantages of other systems without
any of the in-built hazards. |
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Astrothane 2000 behaves like a two pack
reactive system because the mechanism of the cure
enables it to cross-link with atmospheric
moisture. Liquid application allows a seamless
membrane to cover a whole area, following any
surface undulations. |
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Astrothane 2000 cures to a permanently
flexible seamless membrane with good adhesion to a
wide range of substrates including felt, asphalt,
asbestos, concrete, slates, tiles, brick, glass
and metals. |
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Astrothane 2000 does not embrittle with
exposure to ultra violet radiation, ageing or
weathering, and hence does not crack or craze as
is the case with more traditional bitumen based
products. |
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Astrothane 2000 is a high build coating
designed to be applied in a film thickness of
0.5mm as an absolute minimum. It can be brush,
spray or roller applied and has a higher viscosity
than a conventional paint and should not be
diluted. |
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