TYERS STREET, LONDON
Installed as punchhole windows and glazed doors, the VELFAC system is also used to create original architectural features such as a rooftop sunroom and the distinctive mashrabiya –enclosed balconies used to extend interior floor space.
Cost effective insulation
‘We specified VELFAC principally for its thermal performance, as by installing triple-glazed units we could achieve the required level 3 Code for Sustainable Homes in a cost effective manner,’ explains architect David Howel-Evans. ‘This also means excellent acoustic insulation, important given that two of the three external facades are street facing,’ he adds. The low maintenance frame design, combining external aluminium with inner pine, was just as important: ‘With no outside space, any external repainting would require scaffolding and so we had to find a virtually maintenance-free frame.’
System versatility was also essential, given the originality of the design and constraint of the site, explains David: ‘We used VELFAC in a number of ways – for example, to create the series of arrow slit windows, we combined units with panels to create the mashrabiya, and installed the windows with the frames painted white into white fair-faced brick in the sunroom to give a more external aesthetic to this semi-external space. The uniform sightlines are another benefit – all units deliver an identical exterior finish allowing the installation of fixed units on lower floors, where extra security is required, and opening units above, without being obvious on the exterior façade.’
Excellent technical support
David also welcomed the technical support given by VELFAC: ‘Our original design was ambitious but – we hoped - achievable and we worked closely with the VELFAC team and a technical designer to achieve the result we wanted.’
Since it was finished the new house has become a local landmark, and in September 2015 it was part of London’s ‘Open House’ day (a chance for the general public to view outstanding architecture) where it attracted a record number of over 400 visitors in one afternoon.
Sector: Private house
Architect: Howel-Evans & Opher Architects
- Design versatility
- Low maintenance
- Maximum daylight
- Energy efficiency
- Uniform sightlines