The Fantoft TRE student residences are two solid wood buildings built according to the passive house standard. One is five storeys high and the other six storeys. The Student Welfare Organisation in Bergen, SiB, is responsible for the construction and leasing of student housing at Fantoft. SIB currently counts over 4,400 students living in its different types of residences across all price ranges, and is by far the largest player in the rental market in Bergen.
The buildings, which are constructed using solid wood rather than the more commonly used steel or concrete, have been insulated with PAROC WAS 35, ZERO™ Climate-smart slabs. PAROC ZERO™ Climate-smart slabs are a both cost effective and time efficient solution that provide a homogeneous insulating layer with minimal thermal bridges.
PAROC WAS 35, ZERO™ Climate-smart slabs
The ZERO Climate-smart slabs solution builds on a new fastening method, with horizontal façade screws which bear the wind loads and angled façade screws which bear the vertical load from the façade. The horizontal screws also attach the insulation to the underlying frame. If the number of angled façade screws is increased, the load-bearing capacity also increases. This combination ensures a highly robust construction and minimal thermal bridges.”
"The system is easy to install, self-supporting, cost effective, naturally sustainable and environmentally friendly. In addition, it protects against the cold as well as moisture and fire."
"What we liked with the insulation solution was that the slabs could be mounted directly on the timber without any furring strips or other such aids. That gave us a better u-factor, less work. But it was challenging to convince the independent building physics checks that it was OK not to have separate wind barriers, there was a fair bit of back and forth before the documentation was approved."
"It is primarily the installation time that differs. Installing ZERO™ Climate-smart slabs can be done in almost half the time. The lower lambda value also provides a more energy-efficient solution, so an alternative is that the wall thickness can be reduced if compared with the conventional method."
Paroc has developed a sizing tool available on its website. The tool can be used to calculate the number and length of façade screws needed and the design values of wind load and vertical load.