In a new-build situation, which regulation describes the type and implementation of waterproofing in areas in contact with the ground, as well as horizontal areas or those with shallow gradients?
DIN 18195 is the accountable regulation for new-build. In part 2 of this standard, the so-called "stock standard", the materials possible for use in waterproofing are described. Part 4 explains the wet duty conditions for "ground moisture" and "non standing seepage water" for structures in contact with the ground. Part 5 of the standard describes waterproofing of ceiling areas against water not under pressure and in wet rooms. Part 6 of DIN 18915 sorts out waterproofing against water under negative hydrostatic pressure and standing seepage water. The "Polymer modified bitumen reglulations" of the German Construction Chemical Industry offers assistance here.
What is the function of construction waterproofing?
The waterproofing of structures in direct contact with the ground is to permanently protect a building from moisture and to render the internal space more significantly useful. The waterproofing products and system components must be compatible with one another and complement one another. The waterproofing of building foundations / aprons as well as wall penetrations (pipes and cables) and the transitional area between vertical and horizontal areas must be carried out in such a way as to ensure the secure and permanent protection against moisture.
Which products / materials are approved for waterproofing to DIN 18195?
The following materials are regulated to DIN 18195, part 2: Hot applied adhesives and paint on roofing materials, asphalt mastics and poured asphalt, bitumen and polymer bitumen sheet membranes, synthetic and elastomer sheet membranes as well as polymer modified high build bitumen coatings e.g. COMBIFLEX-EL (tables 1 - 6). Furthermore mineral-based, crack-bridging and non crack-bridging waterproof slurries (MDS - table 7), e.g. AQUAFIN-RS300 as well as liquid plastics for construction waterproofing (FLK - table 9). Materials described in tables 1 - 6 may be used for waterproofing wet duty exposure in DIN 18195 parts 4 - 6. The materials described in tables 7 and 9 are approved to date only for wet duty exposure to DIN 18195 part 7.
What is a waterproof concrete tank (Weiße Wanne)?
A waterproof concrete tank (weiße Wanne) is concerned with a building made from waterproof concrete. According to the German committee for reinforced concrete, these are either partially or completely in contact with the ground. The concrete, without additional measures, fulfills the load-bearing and waterproofing functions. Joints and penetrations are waterproofed using suitable means as necessary. The construction and planning of concrete structures using waterproof concrete require particular care and must be carried out in conjunction with current regulations. In addition to the consistency of the concrete, the formation of joints and the avoidance of cracks through movement calculations is of particular significance.
What is "alternative waterproofing"?
As well as waterproofing materials and methods defined in the generally recognised regulations there are also alternative waterproofing materials. Waterproofing materials not listed in DIN 18195 belong here, above all mineral-based waterproofing slurries e.g. AQUAFIN-2K/M. These waterproofing materials have been used for restoration purposes for decades and have stood the test of time through practical application - they conform to the "general recognised technical rules". These products are described in appropriate regulations such as WTA data sheets or those of the German Construction Chemical Industry. If these alternative waterproofing products are to be used to waterproof in a new-build as desired by the contractor, then their use must be separately agreed in writing with the client.
What are the fundamental conditions which determine the wet duty exposure class to DIN 18195, which act on structures in contact with the ground?
The measurement of the water table, the impermeability of the infilled earth and the incorporation of drainage defines the wet duty exposure class to DIN 18195. Above the measured water table relates to wet duty exposure classes "ground moisture" and "seepage water (run-off water)", if the backfill material is highly permeable. The incidental water exerts no hydrostatic pressure on the waterproof membrane. However, if the earth is of low permeability, it must be assumed that there will be, intermittently, water exerting hydrostatic pressure and one must reckon with standing water or even water under pressure (greatest assumable water table ≥ 30 cm below the top edge of the foundation slab).
This means that the water table measurement, the backfill material and the planned drainage as necessary must be incorporated at conception, planning and implementation of any waterproofing measures.
What are the requirements for waterproofing a substrate?
For example the following substrates are suitable for waterproofing: brickwork and sand-lime brickwork, aerated concrete blocks, solid lightweight concrete or concrete blocks, mixed masonry work, concrete or reinforced concrete and renders. All the named substrates must be clean, free from grease and dust and free from all other adhesion inhibiting materials. The bond between waterproofing material and substrate must not be negatively influenced.
Why is it necessary to use the ASO-Systemvlies-02 over thick bitumen coatings?
Which primer do I use beneath COMBIDIC-1K
ASOL-FE diluted 1:5 with water. Allow the primer to dry before applying COMBIDIC-1K.
Can I also apply AQUAFIN-2K/M (white or grey) mechanically.
Yes e.g. with the PFT Swing. The necessary features can be extracted from the equipment schedule AQUAFIN 2K/M.
DIN 18195 is the accountable regulation for new-build. In part 2 of this standard, the so-called "stock standard", the materials possible for use in waterproofing are described. Part 4 explains the wet duty conditions for "ground moisture" and "non standing seepage water" for structures in contact with the ground. Part 5 of the standard describes waterproofing of ceiling areas against water not under pressure and in wet rooms. Part 6 of DIN 18915 sorts out waterproofing against water under negative hydrostatic pressure and standing seepage water. The "Polymer modified bitumen reglulations" of the German Construction Chemical Industry offers assistance here.
What is the function of construction waterproofing?
The waterproofing of structures in direct contact with the ground is to permanently protect a building from moisture and to render the internal space more significantly useful. The waterproofing products and system components must be compatible with one another and complement one another. The waterproofing of building foundations / aprons as well as wall penetrations (pipes and cables) and the transitional area between vertical and horizontal areas must be carried out in such a way as to ensure the secure and permanent protection against moisture.
Which products / materials are approved for waterproofing to DIN 18195?
The following materials are regulated to DIN 18195, part 2: Hot applied adhesives and paint on roofing materials, asphalt mastics and poured asphalt, bitumen and polymer bitumen sheet membranes, synthetic and elastomer sheet membranes as well as polymer modified high build bitumen coatings e.g. COMBIFLEX-EL (tables 1 - 6). Furthermore mineral-based, crack-bridging and non crack-bridging waterproof slurries (MDS - table 7), e.g. AQUAFIN-RS300 as well as liquid plastics for construction waterproofing (FLK - table 9). Materials described in tables 1 - 6 may be used for waterproofing wet duty exposure in DIN 18195 parts 4 - 6. The materials described in tables 7 and 9 are approved to date only for wet duty exposure to DIN 18195 part 7.
What is a waterproof concrete tank (Weiße Wanne)?
A waterproof concrete tank (weiße Wanne) is concerned with a building made from waterproof concrete. According to the German committee for reinforced concrete, these are either partially or completely in contact with the ground. The concrete, without additional measures, fulfills the load-bearing and waterproofing functions. Joints and penetrations are waterproofed using suitable means as necessary. The construction and planning of concrete structures using waterproof concrete require particular care and must be carried out in conjunction with current regulations. In addition to the consistency of the concrete, the formation of joints and the avoidance of cracks through movement calculations is of particular significance.
What is "alternative waterproofing"?
As well as waterproofing materials and methods defined in the generally recognised regulations there are also alternative waterproofing materials. Waterproofing materials not listed in DIN 18195 belong here, above all mineral-based waterproofing slurries e.g. AQUAFIN-2K/M. These waterproofing materials have been used for restoration purposes for decades and have stood the test of time through practical application - they conform to the "general recognised technical rules". These products are described in appropriate regulations such as WTA data sheets or those of the German Construction Chemical Industry. If these alternative waterproofing products are to be used to waterproof in a new-build as desired by the contractor, then their use must be separately agreed in writing with the client.
What are the fundamental conditions which determine the wet duty exposure class to DIN 18195, which act on structures in contact with the ground?
The measurement of the water table, the impermeability of the infilled earth and the incorporation of drainage defines the wet duty exposure class to DIN 18195. Above the measured water table relates to wet duty exposure classes "ground moisture" and "seepage water (run-off water)", if the backfill material is highly permeable. The incidental water exerts no hydrostatic pressure on the waterproof membrane. However, if the earth is of low permeability, it must be assumed that there will be, intermittently, water exerting hydrostatic pressure and one must reckon with standing water or even water under pressure (greatest assumable water table ≥ 30 cm below the top edge of the foundation slab).
This means that the water table measurement, the backfill material and the planned drainage as necessary must be incorporated at conception, planning and implementation of any waterproofing measures.
What are the requirements for waterproofing a substrate?
For example the following substrates are suitable for waterproofing: brickwork and sand-lime brickwork, aerated concrete blocks, solid lightweight concrete or concrete blocks, mixed masonry work, concrete or reinforced concrete and renders. All the named substrates must be clean, free from grease and dust and free from all other adhesion inhibiting materials. The bond between waterproofing material and substrate must not be negatively influenced.
Why is it necessary to use the ASO-Systemvlies-02 over thick bitumen coatings?
- ASO-Systemvlies-02 is a protective measure.
- Protection against damage during the reaction/drying phase.
- Prohibits rapid skin formation on the fresh material and consequently reduces the reaction/drying time.
- Protects against shifting or slipping drainage or insulation boards.
It is recommended for:
The surface of the tanking material is protected immediately after application. Following protective layers e.g. perimeter insulation are not bonded directly to the coating. The ASO-Systemvlies-02 forms a slip layer that prohibits damage to the tanking material from sliding slabs during back filling the excavation.
Which primer do I use beneath COMBIDIC-1K
ASOL-FE diluted 1:5 with water. Allow the primer to dry before applying COMBIDIC-1K.
Can I also apply AQUAFIN-2K/M (white or grey) mechanically.
Yes e.g. with the PFT Swing. The necessary features can be extracted from the equipment schedule AQUAFIN 2K/M.
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