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| ON: Asbestos and fibre cement
sheets | All fibre cement
roofs degrade with age. Surfaces become porous after
weather erosion, bolt holes elongate with normal roof
movement often leading to sheets loosening and overlaps
opening, becoming vulnerable to water ingress. Complete
replacement is expensive particularly since the old
sheets may require controlled disposal. After surface
preparation within health and safety guidelines, and
attention to bolt holes and overlaps, these roofs can be
encapsulated with the
Astrothane 2000 Polyurethane System
to significantly extend their operational
life. |
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Ageing of
asphalt roofs results in surfaces cracking,
sometimes substantial, and porosity of the surface
allowing water penetration. Water trapped beneath
the asphalt surface will vaporise, expand and
force the formation of blisters, progressively
increasing the possibility of water ingress. These
problems can be solved by a minimum three coat
application of the
Astrothane
2000 Polyurethane System, following necessary
attention to surface defects. [ | |
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Felt surfaces become
vulnerable to water ingress with age. Surface damage,
delamination at overlaps and surface porosity are
usually serious problems. Once water penetrates beneath
the surface it can vaporise and force the formation of
blisters and splitting thus increasing the possibility
of further water ingress. The Astrothane
2000 Polyurethane System will provide the solution
to these problems following attention to all surface
defects and delamination and the installation of
flexible seals at overlaps. |
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| WRRCS could be the solution to your roofing
problems |
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