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some of the character in a modern take on the mediaeval gabled street frontage. Here both pre-weathered Quartz-Zinc and Anthra-Zinc are used, and as in Parisian examples, all of the rainwater is dealt with using matching zinc gutters, downpipes and hoppers, fitted by Architectural Metal Roofing.
Back in south London, Shed KM worked with Greenwich council to create a development of one and two bedroom flats on old garage sites. This affordable housing is 100% for social rent but still uses a number of elegant design elements to create attractive homes including large picture windows and durable materials such as Pigmento Red zinc standing seam panels on the facades.
And in Paris itself, while much of the city centre continues to respect Baron Haussmann’s original designs, just outside the centre there are a number of residential developments that have used zinc in a more contemporary fashion. These include the Carre Seine by Pietri Architects, a group of new seven storey blocks that accommodate a 175-bed hotel and 69 flats. As with the mansard roofs of Paris, all of these projects benefit from the attractive aesthetic of zinc roofs and facades and indeed its durability, which the BRE estimates at 100 years in the Environmental Production Declaration EN 15804. At the end of this long service life, zinc is also 100% recyclable – in western Europe over 98% of old roofing zinc is recycled.
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Pre-weathered zinc comes in a wide number of attractive finishes, but for these to be successfully transformed into a finished roof or wall, not only must correct design be followed, it is imperative to use skilled specialist installers. It is for this reason VMZinc works with partner VMZinc@Work installers, who have a known track record of successfully installing the material, and can provide a 50 year material warranty. Last but definitely not least, while fire protection has always been important, it has for obvious reasons been under increased scrutiny and focus in recent years. Zinc is non-combustible following EN 13501, and applying certain coatings and finishes can take this to a limited combustibility rating of A2. By using a galvanised steel deck and stone wool insulation, zinc can be used on high-rise residential projects. Furthermore VMZinc standing roofing and cladding systems show no flame spread or penetration following Brooft4 testing.
Much of this performance is summarised in a BBA certificate for a non-vented warm structural roof, while the more traditional zinc systems follow EN BS 501 and BS Code of Practice 143-5. As a firm we offer office-based RIBA-accredited CPDs to support specifiers, so please do not hesitate to contact us for more information.
Jonathan Lowy is operational marketing manager at VMZinc
ADF OCTOBER 2023
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