Retrofit : Retrofit Volume 2 Issue 1 2013
RETROFIT AUSTRALIA • VOLUME 2 NUMBER 1 2013 • 21 Company Profile | What about buildings that are endlessly comfortable without heating and air- conditioning, virtually maintenance- free, fully solar-powered, yet cost no more to construct than a standard building? Low-E buildings achieve just that, provided that the 'Passivhaus' toolbox for architects is adhered to. This involves foremost a comprehensively airtight (sealed) and seamlessly isothermal (insulated) building envelope. In addition, low-E buildings feature double- or triple- glazing with external solar heat-gain control (blinds) and a ventilation system with energy recovery (fresh-air supply). While low-E buildings maintain the same look and budget like conventional commercial or residential buildings, the building approach differs slightly. To achieve an esky-like building envelope, the perimeter is air-sealed and thermal bridges are eliminated entirely. This omits dew-point-shifting into wall and ceiling constructions, where hidden mould-related damage can occur over time. Thermo-breaking of structural elements, such as concrete slabs, cantilevered balconies and steel roof trusses, contemplates the most complex and, hence, neglected challenge in Australia. LAROS Technologies supplies Schöck's (www.schoeck.de) entire suite of German-engineered structural thermo-breaking solutions. Most outstanding and easy to apply is the original Isokorb, an insulated steel reinforcement insertion element for cantilevered concrete elements, trusted all over Europe since 1962. Unique to low-E dwellings is their very slow thermal response to outdoor climate conditions. Thermally broken, insulated and sealed windows are part of the total low-E building envelope approach. LAROS Technologies supplies 'Passivhaus'-approved curtain-wall solutions from RAICO (www.raico.de), and triple-glazed timber windows and doors from Döpfner (www.doepfner.de). Adopting the 'Passivhaus' toolbox allows architects to be free of design constraints while achieving extraordinary building performance. Low-E buildings are naturally comfortable and cheap to run. They maintain resale value well into the future. Thermally broken and airtight envelope -- key to low-E buildings low-E building solutions for commercial, residential & institutional buildings comprehensive advice & innovative products www.laros.com.au (02) 6160 7777 smart external shading for every architecture comfort ventilation solutions for 100% fresh air thermally-broken windows, doors & curtain-walls innovative solar power systems for facades & roofs structural thermo-breaking of slabs, balconies, etc.
Retrofit Volume 1 Issue 2 2012
Retrofit Volume 2 Issue 2 2013