Further technical information such as composition and manufacture, size and weight, performance and sitework...
Composition and manufacture
Cembrit Brazilian natural slates can be holed on site, by hand or machine, to produce the required size. The Brazilian slates exhibited the top Class A1 standard for water absorption, Class T1 for thermal cycle resistance, and Class S1 for sulphur dioxide exposure resistance. The slates also have good flexural strength, both transversely and longitudinally, as well as acceptable non-carbonate carbon content.
Alpina natural slate is available in two colours:
Grey/Green and Graphite, in a variety of sizes, and with its flat surface and aesthetically-pleasing shade variations, can be relied upon to create an attractive and long-lasting roof.
Laid correctly, Alpina natural slate will last the lifetime of the building and is ideal for use on major projects including supermarkets, schools, offices and prestige homes.
Cembrits Brazilian natural slates are supplied directly to approved accounts, roofing contractors and building merchants; prices are also available on request. Consult manufacturer for further details. Alpina natural slates should be laid in accordance with the provisions of the latest edition of BS 5534:2003 and BS 8000-6:1990, and ventilated in accordance with BS 5250:2002.