It is available in two colours: blue/black and grey, in a variety of sizes, and with its textured surface can be relied on to create an attractive and long lasting roof. Imported by Cembrit Limited for over 15 years, Contessa has become one of the UK’s leading specifi ed Spanish slates. Contessa slates will last the life time of a building if installed correctly and have been widely used on major projects such as supermarkets, schools, hotels, city offi ces and prestige buildings. They can withstand the most severe weather conditions and are unaffected by sunlight, ultraviolet light and even acid rain. There is a potential oxidisation risk with all Contessa slates as their colour is determined by the presence of iron compounds and finely divided carbonaceous matter. They also generally have more pyrite, which may or may not be visible on the surface of the slate. Surface oxidisation of these metallic minerals may cause discolouration or staining of the slate. Neither discolouration nor staining from oxidisation run off will affect the weatherproof performance of the roof.
Cembrit
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