The context likely refers to sealing the front of the crack (not the grooves after the cracks, which are filled with mortar). The same mortar can be used to close the front of the crack. Some people don't do anything about it, or they insulate the building, thus covering the crack and reinforcing the structure. Some designers recommend performing an injection with a cement-based suspension (as an additional measure, helical anchors can also be inserted into drilled holes), or doing it conventionally.
Reinforcing bars, commonly known as rebar, are typically thicker and heavier than helical anchors and are primarily used for reinforcing concrete. Although in theory they could be used as a form of anchoring, helical anchors are specially designed for delicate and discreet reinforcement of walls, especially in historic buildings. Additionally, helical anchors, made of stainless steel, offer greater corrosion resistance compared to many reinforcing bars. Their unique construction ensures they adhere better to mortar and effectively bond walls in grooves, providing a solid and durable connection. Using rebar might not offer the same precision, subtlety, and connection durability as helical anchors. If you're considering using reinforcing bars for this purpose, it's advisable to consult with an expert in building renovation and preservation. Remember, the right tool and material are key to the durability and aesthetics of the completed work.
The properties look quite good after the repair. They typically feature horizontal stripes, but that's essentially all we do in terms of repair. The final finish of the facade depends on the investor. Usually, after our intervention, the walls are repainted, and a new texture is created, such as "baranek" (a type of plaster texture) or another structure, adapted to the original appearance of the building. However, the most crucial aspect of our work is securing the structure of the wall against further damage.
