The Margaretenau building cooperative in Regensburg, which is over 100 years old, is continuously renovating its building stock, some of which is almost 100 years old. Now yet another property in the Margaretenau residential quarter has been raised to modern living standards - including upgrading the thermal insulation. The approx. 36 cm thick solid brick masonry had a much too high heat transmission, so that the heating costs were enormous. This situation was to be remedied with new 3-pane windows and 14 cm thick rock wool insulation. The originally planned wood fibre insulation could not be implemented due to supply bottlenecks, so the decision was made for the alternative of rock wool.
Larger unevennesses in the façade had to be smoothed out by levelling the surfaces to make the installation of the EIFS possible. For the installation of add-on elements such as shutters, thermal bridge-free mounting blocks had to be fixed in order to meet the requirements of the energy report. The maxit heavy-duty bracket is anchored in the masonry with countersunk dowels and has an aluminium plate on the surface, in which the screws of the shutters, for example, are then set. In this way, the direct thermal bridge of the steel screw is avoided 100 % and the shutters, which are based on the historical original, could be installed without a thermal bridge.
It was essential to avoid the dowel abrasions that often occur in EIFS, which is why the maxit VT-2 G screw dowel system was used. Here, dowels are countersunk in the insulation level and covered with a round plate made of the insulation material.
In order to preserve the historic appearance - in search of a similar finish plaster with a rubbing plaster structure - one quickly found the right product at maxit thanks to an extensive range of grain sizes. The clinker bricks were also to be reproduced true to the original in colour and surface. As special brick slips are required by building regulations for EIFS, these were carefully selected on the basis of original samples. The EIFS was made approx. 3 cm thinner in the area of the brick slips in order to be able to place them flush with the façade. Exact measurements were required here!