60 BUILDING FABRIC
Combining the benefi ts of modern slate technology with the look of natural slate: Why choose a Cedral roof
O
ver the past few decades, the popularity of fi bre cement slates has grown as architects, contractors and
homeowners have come to appreciate the aesthetic look, ease of installation and sustainable credentials of this material. A large proportion of new build developers now specify this material for residential projects. It is also increasingly prevalent in the domestic retrofi t / replacement market. Initially, the material was used in panels as a facade on buildings, due to its low cost, low weight, excellent fi re performance and water tightness. During the post-war era, its use grew signifi cantly, with technical developments enabling the manufacture of roof slates, which were thinner and thus lighter than the panels. Fibre cement slates perform well on key
criteria including fi re safety, protection against extreme weather, energy effi ciency, sustainability, maintenance and lifespan. Roofers also want a material that is easy to install. While Cedral’s fi bre cement slates are all pre-holed, most natural slate alternatives are not. Fibre cement slates are consistent in terms of quality and size, so are much more effi cient from the outset. Fibre cement slates come in square or dressed edges, smooth or textured fi nishes and are available in a variety of colours such as Terracotta or Stone Green in addition to Blue-Black which mirrors the traditional slate grey colour. The manufacturers like Cedral also provide an expanding range of
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fi ttings and accessories. Fibre cement slates are also a strong option
for future proofi ng residential roofs against extreme weather. Increasing temperatures can cause blistering or cracking on roof tiles and slates. Fibre cement is highly resistant to intense temperature fl uctuation with a minimum life expectancy of 50 years. With heavier rainfall becoming more normal in many places, the relative weight of the roofi ng can also be a key consideration. Fibre cement slates are consistently lighter
yet just as strong as clay, concrete and natural slate products. With the layered production and fi bre matrix supporting the cement, fi bre cement is thinner than concrete, but has the same performance benefi ts. They don’t require a heavy load bearing roof construction, so less timber is required for the structure. Fibre cement roofi ng tiles work well as an
option for decisions about eco-friendly building processes and materials. Fibre cement which is made of cement, water, cellulose, textile fi bres and air can help improve circularity and carbonation impact. Cedral already supports refurbishment with robust, long-lasting material that is re-usable and with a production process that avoids causes of waste and uses local sourcing and transportation.
CEDRAL FIBRE CEMENT ROOFING FOR THE UK’S FIRST ZERO CARBON COMMUNITY Lead developer A2 Dominion is running the initial phase of the North West Bicester Eco
town project, which has the long-term vision of providing up to 6,000 sustainable new homes and is the fi rst of four planned Eco towns in the UK. Announced in the Government’s Planning
Policy Statement in 2009, the Eco towns are designed to achieve zero carbon development and more sustainable living using the best new design and construction. The initial phase of the North West Bicester
project is called the Exemplar and main contractor Wilmott Dixon has already started to build the fi rst 94 of the 393 planned highly effi cient true zero carbon homes which will create the UK’s fi rst zero carbon community that is using Rivendale Fibre Cement Slates for its roofi ng. Bicester Eco town was designed to
achieve zero carbon development and more sustainable living using the best new design and construction. Rivendale fi bre cement slates were
specifi ed for the roofs on the Exemplar phase by main contractor Wilmott Dixon. The homes are highly effi cient true zero carbon homes which helped to create the UK’s fi rst zero carbon community. Cedral’s UK technical team supports
specifi ers through the process. Visit Cedral’s website for design inspiration, technical documents and certifi cates.
01283 501555
www.cedral.world/en-GB
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