Chemical barrier of masonry: 100 linear meters
Floor waterproofing: 300 m2
Plaster area: 80 m2
The organization located in this building provides crisis assistance, a shelter and a dormitory. The mission of the shelter in the Social Prevention Center is to support people who, due to the loss of housing, have found themselves in a crisis situation and have decided to actively solve this problem. Homeless people are provided with overnight accommodation and the use of personal hygiene conditions, including the provision of cleaning and bed linen. The dormitory offers assistance to homeless people aimed at preventing social exclusion and supporting social inclusion for those users who want to actively solve their situation.
The horizontal waterproofing in the house was not functional. Moisture was rising into the hollow brick walls. The proven system from the German brand KÖSTER appeared to be one of the best and simplest solutions of the solutions supplied. Based on this proposal, the horizontal waterproofing was restored on the load-bearing walls and partitions made of hollow bricks with the special chemical barrier KÖSTER Crisin 76. Hollow shell bricks are a modern material, but from the point of view of any restoration of horizontal waterproofing they are very problematic. Classic chemical barriers are practically impossible to implement due to their hollow structure, or they only achieve a very weak result. The injection material is lost in the cavities and the effectiveness is minimal. For these reasons, the patented KÖSTER CRISIN 76 system was implemented on this project. Thanks to its ideal physical properties, it also allows a completely unique application, using special wicks that are placed in holes in the masonry. The wick then ensures a uniform and ideal supply of material to the brick structure throughout its thickness, regardless of its structure (it can also be used for thick masonry, masonry mixed with cavities, etc.). In the event of cavities, as in this case, there is no unnecessary consumption and leakage of material, because it soaks in spontaneously, only in places of direct contact with the masonry.
KÖSTER Crisin 76 is a synthetic resin with a very low viscosity (like water), which is used to form horizontal waterproofing of masonry against rising damp, even in the case of very high moisture and salt content in the masonry. It differs from other products on the market by its arbitrary, fast and massive penetration into the smallest capillaries, without the use of pressure. This truly unique phenomenon is caused by its very low density and low viscosity (surface tension). The values of these quantities are more favorable than for water. Thanks to this, this material actively displaces water from all capillaries and completely and permanently replaces it.
The floors were covered with a horizontal contact screed waterproofing KÖSTER NB 4000, which is particularly suitable for demanding insulation of substructures, foundations, piles, but also swimming pools and sumps or bathrooms, balconies, terraces and car washes. This universal, and above all seamless waterproofing is characterized by high flexibility and rapid maturation, even at low temperatures. One of the parameters of flexibility is monitored by the DIN EN 14891 standard, which requires the ability to bridge a crack with a width of 0.75 mm in a 2 mm layer. KÖSTER NB 4000 in the required 2 mm layer achieved a crack bridging of 3.58 mm in this test. The material is UV-resistant, radon-tight and can withstand heavy rain after just 1 rain.
In this project, this waterproofing is used over the entire floor area and at the edges it is extended over the sealing run-in fabion, which was made with KÖSTER WP MORTAR mortar, up to the walls. The walls are provided with the restoration plaster system KÖSTER Key Coarse, KÖSTER Restoration Plaster light white up to a height of 1 m. Both under the waterproofing system on the floors and under the restoration plaster system, the special penetration KÖSTER TG 500 was used.
The horizontal waterproofing in the house was not functional. Moisture was rising into the hollow brick walls. The proven system from the German brand KÖSTER appeared to be one of the best and simplest solutions of the solutions supplied. Based on this proposal, the horizontal waterproofing was restored on the load-bearing walls and partitions made of hollow bricks with the special chemical barrier KÖSTER Crisin 76. Hollow shell bricks are a modern material, but from the point of view of any restoration of horizontal waterproofing they are very problematic. Classic chemical barriers are practically impossible to implement due to their hollow structure, or they only achieve a very weak result. The injection material is lost in the cavities and the effectiveness is minimal. For these reasons, the patented KÖSTER CRISIN 76 system was implemented on this project. Thanks to its ideal physical properties, it also allows a completely unique application, using special wicks that are placed in holes in the masonry. The wick then ensures a uniform and ideal supply of material to the brick structure throughout its thickness, regardless of its structure (it can also be used for thick masonry, masonry mixed with cavities, etc.). In the event of cavities, as in this case, there is no unnecessary consumption and leakage of material, because it soaks in spontaneously, only in places of direct contact with the masonry.
KÖSTER Crisin 76 is a synthetic resin with a very low viscosity (like water), which is used to form horizontal waterproofing of masonry against rising damp, even in the case of very high moisture and salt content in the masonry. It differs from other products on the market by its arbitrary, fast and massive penetration into the smallest capillaries, without the use of pressure. This truly unique phenomenon is caused by its very low density and low viscosity (surface tension). The values of these quantities are more favorable than for water. Thanks to this, this material actively displaces water from all capillaries and completely and permanently replaces it.
The floors were covered with a horizontal contact screed waterproofing KÖSTER NB 4000, which is particularly suitable for demanding insulation of substructures, foundations, piles, but also swimming pools and sumps or bathrooms, balconies, terraces and car washes. This universal, and above all seamless waterproofing is characterized by high flexibility and rapid maturation, even at low temperatures. One of the parameters of flexibility is monitored by the DIN EN 14891 standard, which requires the ability to bridge a crack with a width of 0.75 mm in a 2 mm layer. KÖSTER NB 4000 in the required 2 mm layer achieved a crack bridging of 3.58 mm in this test. The material is UV-resistant, radon-tight and can withstand heavy rain after just 1 rain.
In this project, this waterproofing is used over the entire floor area and at the edges it is extended over the sealing run-in fabion, which was made with KÖSTER WP MORTAR mortar, up to the walls. The walls are provided with the restoration plaster system KÖSTER Key Coarse, KÖSTER Restoration Plaster light white up to a height of 1 m. Both under the waterproofing system on the floors and under the restoration plaster system, the special penetration KÖSTER TG 500 was used.
