'Deutscher Kaiser' : Late Gothic residence tower comprehensively
The residence tower 'Deutscher Kaiser'
is one of the most imposing late Gothic buildings of the Koblenz
old town. During its costly rehabilitation, the renovation plaster
and sandstone rehabilitation system as well as sealing and waterproof
plasters of the building material specialist epasit stood, among
other things, the test.
Since the 19th century the residence tower accomodates in the Gothic
vault of the ground floor a restaurant to which it owes its name:
Deutscher Kaiser. The stately tower stands at the Mosel bank, a
few hundred meters before the river merges with the Rhine at the
'Deutsches Eck'. This exposed position causes the building trouble
for centuries, for regularly the river overflows its banks and floods
the building at the Mosel promenade - this also happened during
the rehabilitation work in 2011. Not only moisture, but also environmental
influences gnawed at the historical building substance and thus
it was decided after a comprehensive survey and planning to rehabilitate
the building. The work lasted from 2007 to 2011.
Preservation of monuments and
Since the considerable destruction of the Koblenz
old town in 1944 the object has been detached and in the course
of the rehabilitation it received once again a neighbouring building.
The transition between new and old has optically been designed artful,
for example with bright sandstone straps at the facade of the new
building. 'The rehabilitation and preservation of the historical
substance had to be in harmony with the supplementary building agreed
upon. This problem was solved successfully by means of optically
flowing transitions and an elaborate mural at the northern facade',
Jan Stafiej, manager of Stafiej & Stafiej Baulogistik, Lahnstein,
the company responsible for the facades and interior finishing work,
explained. First of all, doubts regarding the statics caused several
building freezes; these doubts, however, could be dispelled by constructing
a further building, by renovating the storey ceilings and by means
of further stabilization measures.
Facade protected against
As everybody knows, moisture and salt in the masonry attack the
building substance. Thus, the facade of the listed old building
was equipped with a particularly efficient, WTA certified renovation
plaster system in order to 'let evaporate' from the masonry the
moisture of former and future damages caused by flood. The interior
walls too have been repaired with multilayer renovation plaster
stabilized with galvanized reinforcement lattices.
A material which neither locks in nor lets through water was necessary.
The renovation plaster system developed by epasit shows the properties
looked for - slight absorbency, good water vapor permeability, high
pore volume - and favors the natural drying of the walls. 'Therewith
we can guarantee that no salt efflorescences will ensue on the surfaces
for the next decades', Jan Stafiej confirmes.
brings historical busts to light
In the upper floors not affected by the flood,
the stone has been stabilized in the first place with sandstone
hardener. To economize energy in the future the insulation plaster
for rehabilitation, epasit 'sdp', was applied on it. The craftsmen
structured the surfaces with patent rehabilitation plasters 'ep'.
The strongly disintegrated and partly taken down battlements on
the spire have been remodeled with the epasit sandstone rehabilitation
system. The attentive observer will notice a multitude of lovingly
restored busts of historical contemporaries. They have been remodeled
with the stone milk-of-lime 'st'.
Rehabilitation and sealing
of the cellar vault
Especially the cellar vaults have been protected
by the craftsmen with the sealing and waterproof plaster 'epasit
MineralDicht sperr' against a high load of presswater. First of
all, they secured the substrate with galvanized reinforcement lattices.
Chinks in the cellar vaults have been stabilized with spiral anchors.
After the treatment with sandstone hardener, an efficient bonding
coarse plaster could have been applied which served as a basis for
the sealing and waterproof plaster as well as for the multilayer
renovation plaster WTA on the inner sides.
History of the proud tower
at the Mosel bank
As a late Gothic relic, the residence tower
'Deutscher Kaiser' probably stands in the old town of Koblenz since
the end of the 15th century. Already during the Palatine War of
Succession at the end of the 17th century it withstood the siege
by the French army. Later, the building rode out the nearly full
destruction of the Koblenz old town during the Second World War.
Since 2002 the 'Deutscher Kaiser' is part of the UNSECO world heritage
'Oberes Mittelrheintal'. As ever, it serves as a dwelling house.
The eponymous restaurant on the ground floor has been renovated
too with the sandstone rehabilitation system from epasit.
epasit: Baustofflösungen aus
Seit mehr als 50 Jahren entwickelt und produziert
die epasit GmbH Spezialbaustoffe zum Sanieren, Renovieren und Modernisieren.
Die Produktpalette umfasst unter anderem die Bauwerksabdichtung,
die Denkmal- und Altbausanierung sowie das Sanieren von Schimmel-
und Feuchtigkeitsschäden. Auch Trinkwasserbehälter oder
Schwimmbäder werden mit Erzeugnissen von epasit saniert. Mit
gefragten Erfindungen für Bautenschutz und Bausanierung hat
sich das Familienunternehmen als Ideenschmiede profiliert. Neben
tausendfach bewährten Standardprodukten entwickelt epasit individuelle
Lösungen für seine Kunden.
Gymnasium zu Bratislava
Burg zu Bratislava
Wilhelma Stuttgart English
Hafenviertel Tallinn English
EZB Frankfurt English
Zwinger Dresden English
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