The mid 1950s saw the introduction of aluminium gutters and rainwater pipes as an alternative to other metal rainwater systems. At that time even the now obsolete British Standard BS2997:1958 made no reference to selecting marine environment corrosion resistant grades of aluminium for both cast and extruded items. This we assume was based on the assumption that once painted, this protects the material from corrosion. This has proved to not to be the case.
Further more, as the alloy type is not regulated by BS/EN standards, manufacturers tend to use the most economical grades of aluminium, most of which are adequately resistant to corrosion inland, alas not so in coastal areas.
Aluminium is widely used for the construction of, ships, planes, drilling rigs etc, all of which need to be resistant to the salt corrosive marine environments. However, unlike most of the rainwater products industry, they use the appropriate grades of alloy.
Marley Alutec recognises that as the UK has thousands of miles of populated coastal perimeter, all its aluminium products must therefore be Marine Compliant.
Marley Alutec only use marine grade alloys for their components, being the most corrosion resistant alloys available. This gives Alutec systems the longest possible product and paint life expectancy. Whether inland or for coastal areas, Alutec systems will outperform other lesser grade aluminium systems.
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