ISOVER Passivhaus Engl.

The roof construction was insulated
inside with 200 mm ISOVER glass
wool between the rafters and the
mounting system Rosatwist.
dormer windows. Based on this, it
was possible to design the three
floor levels, the window heights of
the ground floor as well as the
thermally separated conservatory
facing the garden. In order to realize
the passive house standard, the
main focus was – besides sufficient
and thermal bridge free insulation –
on airtight execution. After a first
check had detected an insufficient
level of airtightness in the areas of
roof, dormers and windows,
improvements were made in due
course to ensure optimum results.
This extra work as well as the
stand-alone developments and
special constructions of roof, walls
and windows considerably delayed
the course of work. Nevertheless,
this unique conversion process
could be finalized after about two
and a half years.
The result: energy-efficient living on 212 m 2 .
With a heating demand of 13.4
kWh per square meter and an
annual heating demand of 2384
kWh according to DIN EN 832, the
occupants of the former tobacco
barn need not worry – despite the
spaciousness – about rising energy
costs and growing scarcity of
resources: the total cost for heating,
hot water and cooking amount to
Energy values
U-values in W/(m 2 K)
Thermal insulation glazing incl. frame 0.8
Wall areas 0.12-0.15
Barn roof
(incl. wooden parts) 0.09
Floor 0.14
Photo: Dipl. Phys. Raimund Käser
350 EUR a year. Absolutely in keeping
with the principles of the "energy-saving
town" Viernheim. And in
keeping with the Brundlandt Project
of CO2-reduced and sustainable
living.
Building owners/Building physics:
Stephanie und Raimund Käser,
Viernheim
Architect: Dipl. Ing. Bernd Seiler,
Seckenheim
ISOVER 105