Page 150 - AIT0718_E-Paper

WOHNEN • LIVING TECHNISCHER AUSBAU • TECHNICAL SOLUTIONS
Entwurf • Design h.s.d.architekten BDA, Lemgo
Bauherr • Client Kerstin Bröcker, Detmold
Standort • Location Paulinenstraße 42, Detmold
Nutzfläche • Floor space 200 m2
Fotos • Photos h.s.d.architekten BDA, Lemgo
Mehr Informationen auf Seite • More information on page 152
Die Fassade strahlt wieder wie zur Entstehungszeit. • The façade shines again like at the time of its construction.
Grundriss Erdgeschoss • Ground floor plan
Grundriss Obergeschoss • Upper floor plan
150 • AIT 7/8.2018
energy-efficient kind of monument. The utilization flexibility due to the addition and
the linkage of equivalent rooms was preserved in the course of the conversion. All the
installations are designed as easily removable pieces of furniture. The major and, as
regards the concept, most important intervention in the listed building stock was the
dismantling of the floor slab above the dining room while preserving the existing
beam position. The thus produced two-level room with a height of almost eight
metres becomes the communication link between all the other rooms. The three-
metres high, double-leaf doors on the upper floors turn into galleries and create an
unexpected, light-flooded space continuum with diverse perspectives across all the
floors of the historic building.
The dismantling of the floor slab created new room connections
In the course of the conversion, most of the installations not identified as historic or
as historicizing were removed so that the preserved, original building stock is visible
once again. This especially applies to dealing with the well-preserved, historic wind-
ows on the street side. For energetic and noise-protection reasons, these windows
were upgraded into box-type windows with inside insulating glazing. Due to their
flush installation, the additional opening wings located at the level of the inside insu-
lation can hardly be noticed. From the outside as well, the house regained the origi-
nal, filigree look thanks to the exclusive visibility of the single-glazed windows. As to
design, this is a highly concentrated and costly intervention with carefully selected
restricted materials and surfaces. The floors consisting of well-preserved pitch-pine
boards are the most striking surfaces in the building’s interior. Comparing them with
domestic types of wood showed that the colour and the structure of larch are most
similar to this type of wood which was formerly imported from North and Central
America. The neutral white colour of the setting produces an attractive contrast to
with the feel and the warmth of this type of wood. The concept regarding the mate-
rials for the surfaces of the structural additions and the individually made furniture
was reduced to this contrast. The kitchen is the only room where the historic pitch-
pine boards that had formerly been installed were no longer preserved. The new floo-
ring consists of triple-layer larch panels which fold up as a kitchen front on one wall
side right up to the ceiling. The subsequent installation is emphasized with an all-
around white joint towards the walls. The cooking island stands on this wooden sur-
face as a white cube of acrylic stone. The cabinet body, the work surface and the sink
are made as one unit and without any joints. The characteristics of the Gründerzeit
layout typology require that all the four rooms of one level have almost the same
dimensions. In addition, the many doors between the rooms make positioning closets
difficult, especially in the bedroom. These aspects have the consequence that the
bathroom, which is actually too large, also takes on the function of a dressing room.
In order to preserve the room with its original geometry and materials despite these
different functions, a room-in-the-room concept was developed. All the features of the
bathrooms are in an inserted white “tube” which appears to be floating above the
wooden floor. The shower tub, the back wall of the shower cubicle and the washba-
sin were made of acrylic stone while the ceiling, the side parts and the integrated clo-
set are constructed of white-painted MDF.
The new installations keep their distance from the historic building
Besides the dismantling of the floor slab above the dining room, the added, in parts
glazed, partition between the cloakroom and the guest toilet is the only intervention
in the historic sequence of rooms. A large, asymmetrically mounted revolving door
links the two rooms. The consistent motif of the threshold in the historic doors was
exaggerated. Due to the historic façade which faces the street with its high-quality
design, in this area insulation for energetic optimization was only possible on the
inside. There is furthermore noise from the relatively busy street which here did not
really make natural ventilation via windows an option. This led to the decision to
combine inside insulation of capillary-active wood-fibre insulating panels with a
thickness of eight centimetres and wall heating, clay plaster and a ventilation system
with heat recovery. For a historic building, the room climate is exceptionally stable
and comfortable. In the open spatial structure, the radiating heat of the wall heating,
the humidity buffered by the clay plaster and the high air quality produced by of con-
tinuous ventilation has turned out to be very pleasant.