Aluminium Extra
Tested at UL in the Midlands , testing was independently overseen by Fenestration Consultants , Cladtech Associates . The CWCT Sequence B test is far more intrusive than the traditional cabinet testing and is summarised as follows :
Air permeability in a cabinet test will have an overall figure of 3m ³/( h : m ²) and an opening joint would be 0.75m ³/( h : m ²), for the CWCT sequence this is reduced 1.5m ³/ ( h : m ²) for overall area and 0.5m ³/( h : m ²) for a fixed joint which is a significant tighter specification . Typically , when testing a curtain wall facade to the CWCT sequence , it is normal to tape off any opening products such as doors windows and vents , however ,, for the MB-77HS test the sliding door was left untaped to test the product in a real world scenario .
For a standard water resistance cabinet test you would have 2l / m per nozzle at the head and 1l / m per nozzle for the second row for a sample up to 2500mm in height . Spray nozzles would be set at 400mm centres and 250mm from the face of the sample . With the CWCT the sequence requires that nozzles no more than 700mm apart horizontally and vertically and then 400mm from the face , the rate of flow is increased to 3.4l / m per nozzle . This is a significant increase in the level of water , over three times the normal amount in a cabinet test and it is unlikely that many opening products would achieve a rating , but the MB-77HS system passed the CWCT Sequence B .
Aluprof systems have been installed on the scheme by Leeds based specialists Casu Consulto and the project is expected to be completed by the end of 2021 following a nine month fit out .
With the company ’ s Project Office at the Business Design Centre in London , Aluprof has rapidly grown their specification influence in the UK with their high performance architectural aluminium systems . With overseas growth across Europe spreading into the Middle East and firm roots already in the East of the USA , the company is becoming a global player in facade supply .
Further information is available on the company ’ s website at aluprof . co . uk or direct from their UK office in Altrincham on 0161 941 4005 .
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