weber.tec Superflex D 24

With weber.tec Superflex D 24​​​​​​, ​Weber revolutionises the fields of application possibilities and the processing possibilities for the waterproofing of buildings. This is because the product is based on a reactive and fast-setting, bitumen-free binder. As a result, the material dries quickly and largely independent of the weather. After a few hours, weber.tec Superflex D 24 is rainproof, and after 24 hours at the latest, the excavation can be backfilled.

In addition, the thick-layer coating stands out by a featherlight application and a variety of uses: external and internal waterproofing of basement walls, waterproofing under screeds, old waterproofing renovation, waterproofing of facade socket areas with post-applied render, horizontal damp-proof course, scratch layer and glue for insulation boards.

Advantages of weber.tec Superflex D 24

• quick drying
• fast resistance to pressure water
• multi-use
• radon gas-tight

Radon is a naturally occurring, radioactive noble gas that is formed in the ground by the decay of uranium. When exposed to air, the colourless and odourless radon decays in a short time. However, it penetrates buildings through unprotected foundations or basement walls. In poorly ventilated rooms, such as cellars, the concentration increases and can lead to lung cancer in case of a permanent contact.

Since December 2018, a new Radiation Protection Act has been in force in Germany that sets limits for exposure to radon in buildings. In addition, the Federal Office for Radiation Protection also lists concrete construction measures for protection against radiation exposure that builders, architects and civil engineers should be aware of.

What measures reduce radon exposure in buildings?

In addition to using tested building materials, the most important thing is to keep radon, which penetrates through the soil, away from the building. For this purpose, the legislator requires, for ex., that all supply lines to the house be gas-tight. All installation shafts should therefore be carefully sealed and checked to prevent radon from spreading. A large part of this sealing work can also be done later.

Waterproofing walls and floor slabs in contact with the ground with the radon gas-tight reactive waterproofing weber.tec Superflex D 24 provides safe and durable protection against the penetration of radon gas and moisture. Approval of the building authorities and test certificates meeting the high requirements for polymer-modified bitumen thick coatings (PMBC) according to DIN EN 15814 are available. In addition, the product has been tested with regard to radon gas impermeability and certified as radon gas impermeable at 4 mm dry film thickness.

The full-surface, trough-shaped waterproofing of the building components in contact with the earth thus offers the best protection against radon gas exposure.

The basis of a permanently dry building structure also includes a well waterproofed socket area. The socket is highly stressed by temperature fluctuations, splash water, salts and freeze/thaw cycles, as well as changing moisture/dry load due to driving rain, solar radiation, etc. The waterproofing of the socket must be carried out by professionals.

In order to create a homogeneous, seamless and correct waterproofing from the basement up to the socket, it is crucial to know how the facade will be built and where the final upper edge of the ground will later be situated.

If the socket is covered with an external thermal insulation composite system (ETICS), we recommend waterproofing either with flexible, cement-based compounds or with flexible, polymer-modified thick coatings, such as weber.tec Superflex D 24. 

Facades with exposed masonry are 2-shell constructions. Here too, we recommend flexible, cement-based slurries or weber.tec Superflex D 24. 

You can carry out the waterproofing seamlessly from the basement floor to the socket area without changing products using only one product. The same applies to single-shell wall constructions made of high-heating bricks with outer render shells made of for ex. thermal insulation render.

In the German technical regulations, like DIN 18533,  the "Guideline for Planning and Execution of Waterproofing of Ground-contacting Building Structures with Flexible Polymer-Modified Thick-Layer Waterproofing Coatings (FDP)" etc., the socket area is given the highest attention with regard to waterproofing. This is due not only to the high load, but also to the many design variants. On the one hand, due to the different wall constructions, such as the trendy "timber frame construction", on the other hand, due to the building joints that have to be included in the waterproofing levels, as well as in particular the connection to floor-level windows.

For full information request technical advice.