ISOVER Passivhaus Engl.

The Possibilities.
The future: Refurbishment
Architectural and energetic upgrade: an unattractive bungalow turned into
a showpiece. One-family house in Pettenbach, Upper Austria.
In many European countries, the
number of newly built houses
increases by no more than about
1%. Against this background, the
energetic refurbishment of old
buildings is becoming increasingly
108 ISOVER
important. The house in Pettenbach
was Austria's first refurbishment
project that was executed according
to passive house criteria. With a
heating demand of 280 kWh/m2a, the dark, cramped bungalow from
the 1960s was a typical representative
of the category “energy
waster”. Today, it does not only
meet the latest energy requirements
(heating demand 14.8 kWh/m2a acc. to PHPP), but also got a major
architectural facelift. The projecting
wing of the unassuming building
Building owner: the Schwarz family. Planner: Lang Consulting.
was clad with a horizontal larchwood
panelling while a smooth
metal facade lends its character to
the recessed part of the building.
Generously sized windows – mostly
of full room height – allow light to
flood in and do not obstruct the
outside view.
Annual heating costs for the entire house
Before refurbishment: EUR 2.700 per year
After refurbishment: EUR 200 per year