of cultural

Restoration of cultural heritage

Construction is an activity that has left a lasting legacy to humanity that we have the opportunity to admire again and again.

Inspired by this very fact, ING-GRAD was founded as a construction company whose activities include specialized works comprised of: restoration and reconstruction of monumental heritage of exceptional historical and artistic significance.

In more than 35 years of work on the restoration and reconstruction of the monumental heritage, we have been using all the advantages of modern construction methods, but also applying unique knowledge based on the techniques, skills and recipes of old crafts.

Public buildings

In the cultural heritage restoration projects, we highlight the following works:

Static restoration

Most buildings of cultural or architectural heritage are brick buildings built of stone or brick wall elements connected with mortar, usually found in poor condition due to their age and inadequate maintenance. Therefore, before the renovation and final arrangement, it is necessary to carry out constructive restoration. The complexity of the historical buildings restoration requires the incompatibility of traditional and new materials and respect for their original existence, which is why the use of reinforced concrete is not recommended. The most favourable technique for repairing and strengthening such constructions has proved to be injection, i.e., stabilizing and closing cracks in damaged walls by injecting special injection compounds, applying reinforced cement or epoxy coatings on one or both sides of the wall, and pre-tensioning the walls.

Did you know?

The arrangement and furnishing of the Veliki Tabor Castle were preceded by its structural rehabilitation, which included static restoration of the stone walls and vaults. The stone structure was stabilized and strengthened by injection with special injection mortars and additionally strengthened by the installation of steel braces, which at the same time secured the building from shakes.

Reconstruction and restoration of wooden roof structures

Roofs of monumental heritage buildings are usually wooden roofs with different types of covering, depending on the tradition of the climate in which the building is located. The reconstruction of such wooden roofs implies the replacement of individual elements or the complete structure with new wood, most often made of Slavonian oak or conifer, and the replacement of the covers.

Did you know?

On the church of Sv. Marko (St. Mark), the symbol of the city of Zagreb, the reconstruction of the wooden roof was carried out with larch wood, and the covering was replaced with a new glazed tile made according to the original photo-geometric drawings of the builder Hermann Bollé. The new tile, like the original one, was made and delivered from Hungary.

Renovation and reconstruction of external and internal elements of the building

The renovation and reconstruction of the building includes the renovation of the external facade, the execution of profiles and stone plastic, the production of wooden joinery and everything that includes the restoration of the historical appearance and original condition. It is done according to conservation guidelines, which is why the restoration and reconstruction of the building is longer and requires specific materials, works and methods of execution.

Did you know?

On the project of the Museum of Slavonia in Osijek, renovation works were carried out on the facade and facade of the building by making lime plaster according to the original recipe. All materials were prepared and produced on the construction site. The specific colour of the facade was achieved with natural pigments obtained from the ash of larch wood.

Craftsmanship works on the restoration of the monumental heritage

After the constructive rehabilitation and external decoration of the building, a series of delicate and demanding craftsmanship works usually follow, which must be carried out in the spirit and tradition of the construction of the climate in which the building is located.

Did you know?

In addition to the fact that the area of ​​the Museum of Sinjska alka is arranged and equipped so that the modern museum and other equipment fit perfectly into the ambience of the old Venetian building, the wooden floor covering in the main hall, where there is a representation of the procession of Sinjska alka in real size, was made with a demanding and interesting technique that evokes the uneven surface of the Sinjska alka track.

more than80

renovated buildings

more than2000

year the age of the oldest restored building

Restoration and reconstruction of Miroslava Krleža Elementary School

City of Zagreb

Public buildings

Miroslava Krleža elementary school is the oldest school in Zagreb. Due to the period in which it was built, but also due to its specific features, this school is part of the historical urban complex of the city of Zagreb and part of the cultural heritage. The first school year at Miroslav Krleža Elementary School was 1877/1878. As the oldest school in the city of Zagreb, this school experienced two earthquakes, the first on November 9, 1880, and then on March 22, 2020.

In the second earthquake, the school suffered considerable damage. A static inspection of the building found that the school is unusable due to structural damage to the load-bearing walls and the risk of collapse. The damage caused to the school due to the earthquake is the result of the age of the material, which has lost its load-bearing and binding properties over the years, which is why even the ceilings made of wooden beams are not properly connected to the vertical structure.

It has been structurally strengthened through reconstruction, which will ensure the desired behaviour and response in future earthquakes, in addition to the material's resistance.

After the basic intention to carry out structural rehabilitation through a reconstruction project, a number of changes were carried out inside the school in order to bring the building into line with valid laws and regulations, and this especially refers to the application of fire protection and occupational safety measures. All works inside the building and on its facade were carried out in accordance with the requirements of the City Institute for the Protection of Cultural and Natural Monuments. Some of the works are changes in the floor plan layout to ensure the standard of today's schools, which also includes ensuring conditions for people with disabilities, which is why an elevator was installed in the school. Additional works include renovating the entire facade of the school, replacing the exterior carpentry, performing thermal insulation on the inside, laying out new installations, and completely decorating the yard.





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