General
Sealing systems
Depending on the circumstances, the following accessories are available:
A) For single-layer loose laid, hard or thin (< 2 mm) geomembranes, EPDM accessories 1775 (2 EPDM blanks, adapted to the selected fixed/loose flange system) are recommended
B) For thick coatings (e.g. KMB), the Curaflex 1776 accessory (sponge rubber spacer rings and a glass silk fabric for working into the KMB) is also recommended, as well as an appropriate perforating iron if necessary.
As a rule, the GGV version is sufficient. However, if the gasket insert comes into contact with acidic or alkaline water, drinking water or aggressive media, a different material may need to be used. We can provide you with binding information if you complete and returnthe resistance checklist to us. We will then be happy to make you an appropriate offer.
Our sealing inserts (Curaflex®, CuraflexNova® or HKD) can be installed in watertight concrete core drill holes or casing pipes whose course deviates from the horizontal or vertical (e.g. inclined hole). The prerequisite for this is that the pipe to be sealed runs parallel to the wall of the core drill hole/lining pipe (same angle) and that the sealing systems are installed professionally in accordance with our applicable installation instructions.
In the installation instructions for our sealing inserts, we recommend "The nut side of the sealing insert should face away from the water". This recommendation is intended to ensure that the sealing insert is accessible from the cellar side even after completion of the construction work. This makes it possible to check the screw connections of the sealing insert or to dismantle the sealing insert without having to expose the cellar wall on the outside. Furthermore, the screw connection is exposed to less stress.
In terms of sealing, the installation direction has no effect if installed correctly. The sealing inserts are maintenance-free.
If structural conditions mean that installation can only be carried out from the side facing the water, the nuts can also face the side facing the water.
In the case of elevated houses in timber construction, where the floor or the lowest ceiling is also in timber construction, there is no waterproofing in contact with the ground. This means that there is no waterproofing in accordance with DIN 18533 or a waterproof concrete floor slab. Due to the elevation, the lower finish is also not exposed to groundwater, surface water or soil gases (which can escape freely). This means that the lower end of the structure only needs to be sealed in the same way as for above-ground wall penetrations.
The regulations for the electricity, water and telecommunications sectors require a gas- and watertight entry for the mains/house connection. This can be achieved with a seal between the sheathed/empty pipe and the cable and an on-site seal between the sheathed/empty pipe and the seal (usually airtight foil) of the wooden ceiling.
DVGW G 459-1 requires a fixed point and a DVGW VP 601 tested and approved house entry system for gas house entries. This means that a concrete foundation (at least 10 cm around the house entry system) is always required to fulfill the fixed point requirement for this construction method.
However, when using our Quadro-Secura single or multi-section house entry systems for buildings without a basement, a concrete foundation is required for functional reasons. This means that the structural design of the products is designed for this and it is not possible to carry out the installation specifications without a concrete foundation.
Axial movement of local and district heating pipes can lead to the following situations with regard to the sealing insert:
- there is no relative movement between the casing pipe and the sealing rubber of the sealing insert - the rubber rolls with the pipe
- there is a relative movement between the casing pipe and the sealing rubber of the sealing insert - pipe slips
A relative movement between the casing pipe and the sealing rubber of the sealing insert creates frictional forces. Internal tests have shown that these frictional forces can lead to detachment of the bond between the media pipe and the insulation/foam.
When the rubber is rolled (no relative movement), 10 to 20 mm axial movement is generally possible due to thermal expansion (slow) if the pipe is a smooth-walled PE-HD casing pipe.
The axial movement depends on the following boundary conditions:
- Pipe type
- Rubber material
- Repetition rate of the movement
- Speed of the movement
- Length of the movement
- Structural conditions
- Pipe routing
In any case, radial movement must be ruled out.
Conclusion: Unfortunately, we cannot make a general statement on this.
More precise statements can be made when we are given the specific circumstances.
The sealing systems in the DOYMACuraflex® andQuadro-Secura®ranges meet the minimum building authority requirements of the Model Administrative Regulation Technical Building Regulations (MVV TB) in accordance with Annex 4, corresponding to the building material class in accordance with DIN 4102 (B2) and DIN EN 13501-1 (E) and are therefore considered to have normal flammability.
Edge insulation strips serve to separate the screed from fixed components (sound decoupling) and allow the screed to expand (protection against cracking). If the edge insulation strip is laid correctly (max. 10 mm material thickness), i.e. tightly guided around the frame of the structural element and then covered (at the level of the floor covering) by the anchor plate of the installation part, this is proper and professional. The edge insulation strips must be surrounded by screed concrete. This fulfills the requirements of DVGW G459-1. The prerequisite for this is the correct installation of the house entry according to our installation instructions.
Floating screeds are used to improve thermal and impact sound insulation, i.e. the above-mentioned sound decoupling and, particularly in the case of underfloor heating, the possibility of expansion. This means that the screed slab can move vertically and horizontally. It must not be in direct contact with other components, as otherwise sound or thermal bridges and a constraint will occur.
If the network operator is not satisfied with our approach described above, then a corresponding area around the shell box would have to be encased in concrete and then separated from the wall and screed slab by means of an edge insulation strip. From our point of view, however, this would be costly and disproportionate.
According to the guidelines and regulations of the German Institute for Building Technology (DIBt), our annular space seals are classified as construction products in accordance with the Model Administrative Regulation Technical Building Regulations (MVV TB) Part D.
The Model Administrative Regulation Technical Building Regulations (MVV TB) Part D is defined as follows:
"Part D contains the list of construction products which do not require a certificate of usability as provided for in Section 17 (3) MBO1. This includes construction products for which there are generally recognized rules of technology, but for which no proof of usability is required, as well as construction products for which there are neither technical building regulations nor generally recognized rules of technology and which are of secondary importance under building regulations. The list is for clarification purposes only and does not claim to be exhaustive."
In Part D, these are listed under D 2.2.2.12 Ring seals for pipe penetrations and seals for formwork clamping points for external components in contact with the ground, which are not subject to any fire protection requirements.
We are therefore unable to issue you with a certificate of usability, certificate of conformity, manufacturer's declaration, declaration of conformity or a structural approval in accordance with applicable standards.
Irrespective of this, however, depending on the composition of the building products and the way they are used, requirements may be imposed with regard to fire protection, health or environmental protection. Such requirements arise, for example, from the ban on the use of building materials that are also highly flammable in combination with other building materials, as well as from material bans or restrictions and general regulations or principles of other areas of law (e.g. Chemicals Act, Hazardous Substances Ordinance, Water Resources Act), from which restrictive provisions could be derived.
OurCuraflex® sealing inserts consisting of a 1.4301 (V2A) or 1.4571 (V4A) frame and an EPDM-TW elastomer (ethylene propylene diene rubber, suitable for drinking water) are suitable for contact with drinking water.
Corresponding test certificates based on the elastomer guideline and DVGW worksheet W270 are available for usability in accordance with the requirements of the Drinking Water Ordinance. The currently valid versions can be provided on request.