A new city-fringe residential building in Sydney is using two very different Bluescope Lysaght cladding materials to ensure its eye-catching roofline maintains its good looks for many years to come.
evolve* is a 13-storey, 47-unit, waterfront apartment complex located at the Jackson’s Landing precinct at Pyrmont, to the west of Sydney’s CBD. Designed by JAHN Associates for Lend Lease Development, the evolve* building comprises four large units per floor and features city and harbour views.
Its 'floating' metal roof has been sculpted as a folding form, highly visible to traffic moving across the nearby Anzac Bridge. The design incorporates 400 sqm of Lysaght Longline 305 roll formed from Colorbond Ultra steel in the colour Surf Mist, which was used for the roof cladding.
The soffit was clad in 400 sqm of Permalite, marine grade aluminium cladding, roll formed in Shoredek profile in the colour Glacier White.
Lead project consultant, Graham Jahn says: “As the evolve* building is lower than surrounding complexes, it was important to make the roof a feature aspect of the overall design. I also wanted it to complement the highly textured facade, which is a unique stone pattern designed by Jahn Associates using colour oxide reinforced concrete.
“The roof was to be seen as an object, not an eave. It is a membrane held taut with structural support poles which are as thin as possible. The poles tilt out to stabilise the roof and to create an open fair weather space."
“It looks great but was a very labour intensive project. The Shoredek and Longline 305 sheets were 18m long and we had between four and six roof fixers on site at any one time for 12 weeks," Jon Trotman says, project manager from commercial roofing specialists Parker Contractors.
“We had a very tough timetable to adhere to ... Each of the 240 sheets were cut to size before despatching to site so the fixers only had to shape a few sheets. This led to great efficiency and time savings as well as significantly reducing wastage.”
