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Special civil engineering

Specialised civil engineering for cultural heritage: masonry restoration of Ebersdorf Collegiate Church

Chemnitz, / Special civil engineering / Press Release

In Chemnitz, the PORR Special Civil Engineering team carried out masonry restoration work on the listed Ebersdorf Collegiate Church. The work was carried out on behalf of the Evangelical Lutheran Segenskirchgemeinde Chemnitz-Nord and marked the completion of the comprehensive renovation of the historic church building. The existing structure required a high degree of sensitivity and technical precision.

The photograph shows a listed church built of natural stone, framed by scaffolding that runs all the way round it. The scaffolding runs along the façade and extends up to just below the steep, slate-covered church roof. Typical architectural features of a late-Gothic religious building are visible on the outer wall, including tall, narrow windows and a massive tower section. Two people in high-visibility clothing are standing on a scaffold platform, carrying out work on the façade. A site sign bearing the lettering ‘PORR’ is attached to the scaffolding. The churchyard is partly paved; in the background, further historic buildings, parked vehicles and trees in autumnal colours can be seen.
© PORR
With around 2,800 metres of joints cleaned out and the joint mortar properly mixed, the late-Gothic collegiate church in Ebersdorf was professionally restored.

The Protestant collegiate church in the Ebersdorf district of Chemnitz is one of the most significant late-Gothic religious buildings in central Germany. Built between 1400 and 1470, the church is a listed building and has undergone extensive renovation in several phases. For the final works, the German federal government and the Free State of Saxony provided funding to restore the façades and the historic north portal in accordance with conservation guidelines.

The masonry restoration placed high demands on technical precision and required a keen understanding of the existing masonry. First, the joints were cleared by hand and the historic stones thoroughly cleaned. During the restoration, approximately 2,800 m of joints were cleared around the rubble masonry. The team then applied a joint mortar colour-matched to the existing joints. Approximately 9 tonnes of a highly sulphate-resistant mortar were used to create the joints. Finally, excess mortar residues were removed and the surface cleaned using sandblasting to achieve a uniform and homogeneous appearance.

“Our specialist staff, comprising bricklayers and civil engineering specialists, possess the necessary additional qualifications as well as many years of experience in building renovation. This enabled us to carry out this demanding construction project safely and cost-effectively. Thanks to agile planning, our team was able to respond flexibly to on-site conditions and ensure the project was handed over on schedule,” explains Branch Manager Patrick Günther, PORR Spezialtiefbau Berlin.

The photograph shows a listed church built of natural stone, framed by scaffolding that runs all the way round it. The scaffolding runs along the façade and extends up to just below the steep, slate-covered church roof. Typical architectural features of a late-Gothic religious building are visible on the outer wall, including tall, narrow windows and a massive tower section. Two people in high-visibility clothing are standing on a scaffold platform, carrying out work on the façade. A site sign bearing the lettering ‘PORR’ is attached to the scaffolding. The churchyard is partly paved; in the background, further historic buildings, parked vehicles and trees in autumnal colours can be seen.
The photograph shows an exterior view of the listed Ebersdorf Collegiate Church from an elevated vantage point. The focus is on the natural stone façades with their tall, narrow Gothic windows, as well as the striking, steeply pitched roofs covered in dark slate. Several roof surfaces and towers characterise the complex architectural form of this historic church building. In the background, neighbouring buildings in the district and trees with autumnal foliage can be seen. The angle of view highlights the church’s varied structures and varying heights, emphasising the solid, artisanal character of the late-Gothic masonry.
The image shows a person wearing high-visibility clothing and a safety helmet, working on a historic natural stone wall. The person is standing on a work platform within a scaffold or under a scaffold canopy, working on the upper section of the masonry, apparently in the area of a joint or a connection beneath a projection. The wall consists of irregular rubble masonry with a visibly aged surface. In the work area, cleaned and partially renewed joints are visible, indicating ongoing renovation or repair work. On the left of the picture are covers and materials designed to protect the surrounding area from dirt or damage.

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Sarah Render

Unternehmenskommunikation / Deutschland
+49 89 71001-475
presse@porr.de