EXTERNAL ENVELOPE
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Galvanizing the sustainable finish G
alvanizing has long been recognised as the most sustainable finishing process available, and with the
ever-evolving emergence of new technologies, it is increasingly becoming even more- environmentally friendly. Steel is a vital raw material in many industries across the world, but as a metal, it is highly prone to corrosion. In fact, it’s estimated that worldwide, one tonne of steel turns to rust every 90 seconds, which means that for every two tonnes of new steel
produced, one is made simply to rust. Galvanizing protects steel from corrosion
by coating the metal with zinc to prevent it from rusting. Clean steel components are dipped into molten zinc at temperatures of up to 450°C, where a series of zinc-iron alloy layers are formed by a metallurgical reaction between the iron and the zinc. Unlike other finishes, the process of galvanizing results in minimal waste, as any zinc that doesn’t instantly form a coating on the metal remains in the galvanizing bath and is subsequently re-used. A further benefit of galvanizing is its low whole-life cost. The process only needs to be carried out once, and will result in corrosion protection that can last up to 70 years without the need for any time or resource-intensive maintenance or replacement, thus improving economies of scale and savings in energy. Galvanized products, once constructed or installed, can also be removed, re-galvanized and re-used, as well as being easily recycled with steel scrap in the steel production process. Ongoing Development continues to
Retractable Kalwall allows open air swimming Kalwall®
achieve more sustainability. One such method is the re-use of ‘waste’ heat from furnaces involved in the galvanizing process, via a system of ducting it through heat exchanger units, which provides heat for both degrease and pre-flux tanks. Low flume fluxes have also been developed which ensure that emission limits are achieved with minimum use of energy-consuming abatement equipment. With its sustainable qualities, long life-span
and cost-efficient whole-life savings, hot dip galvanizing can clearly be considered one of the most environmentally-friendly finishing processes available.
01902 601944
www.wedge-galv.co.uk
translucent cladding, exclusively available in the UK and Ireland from Structura UK Ltd, has been
used for a clever retractable roof system at Club One in Maryland, USA. Kalwall and its subsidiary, Structures Unlimited, worked with SEI Architects to engineer at 40 x 25 metre enclosure for Club One’s aquatic centre comprising six-lane swimming pool, warm water leisure/therapy pool and a kid’s pool with slide and beach entry. The pre-engineered aluminium frame pool enclosure system features a Kalwall translucent panel roof system with two unique openable roof systems. The retractable roof systems help create an atmosphere that allows the facility to be operated as an outdoor pool in spring, summer and autumn and as an indoor pool in winter months. With diffused natural daylight and resistance to solar gain, coupled with significant reduction in ventilation, cooling and dehumidification energy costs, energy-consuming artificial lighting and air- conditioning costs are dramatically reduced. The lightweight system also reduces the need for supporting structures maximising the usable space while offering the highest protection.
www.structura-uk.com/kalwall Neaco’s design input enhances apartments
McCarthy & Stone’s Stapleton Court development of retirement apartments has utilised Neaco’s design expertise for an extensive specification of glass walk-on balconies. Fraser Mitcalfe, Regional Surveyor at McCarthy & Stone, said: “We have
used Neaco for numerous previous developments due the high standard of their product and their reliable service. As a company, they bring more than just product quality to the table – they also bring useful design input and experience from a supplier’s perspective. Their Neatdek decking is now specified group-wide due to its non-combustible quality which is now a legal requirement for balconies on residential developments.”
sales@neaco.co.uk Metal Technology’s innovative designs
Metal Technology recently delivered its specialist architectural aluminium systems for use at Bertha Park High School in Perth, which is set to become one of the most advanced schools in the UK and beyond due investment into innovative technologies. The significant
education project selected Metal Technology’s systems in order to meet the security, thermal, and airtight design requirements, as well as the desired ventilation strategy. The state-of-the-art facility perfectly showcases Metal Technology’s striking full height System 17 curtain walling facade, as well as a range of other specialist products.
028 9448 7777
www.metaltechnology.com
ADF JANUARY 2020
WWW.ARCHITECTSDATAFILE.CO.UK
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