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    Sealing of the basement

    The sealing of the basement has the task of protecting the foundation walls of the house and the basement from the penetration of moisture. It literally makes a “fundamental” contribution to the building protection - after all, the basement is the basis of all further floors. When it comes to the sealing of components being in touch with the ground, a distinction is made in accordance with the standard DIN 18533: The sealing of floor slabs and walls being in touch with the ground as well as the sealing of wall bases and against capillary water in and under walls (masonry barriers). Here in the following, the different options available for the basement sealing will be presented individually.

    Basement sealing: Sealing of floor slabs and walls being in touch with the ground

    Experts differentiate between the horizontal basement sealing (of the floor slab) and the vertical basement sealing (of the wall being in touch with the ground). In this case, the term horizontal and/or vertical describes the direction of installation of the sealing. A distinction is made between the water effects of soil moisture, non-pressing and pressing water, the house is to be protected from.

    Abdichtung von Bodenplatten und erdberührten Wänden

    Laterally penetrating water: vertical basement sealing (of the walls being in touch with the ground)

    In the basements, the soil moisture acts laterally on the walls through capillary-bound water (suction, adhesive, and capillary water) or from outside pressing water as groundwater, flood, or backwater. A properly planned and executed sealing of the walls being in touch with the ground ensures a permanently dry basement. What is also important is the protection of sensitive seals. The product DELTA® protective and drainage membranes such as DELTA®-TERRAXX or DELTA®-GEO DRAIN QUATTRO make an important contribution to this. With a compressive strength of approximately 400 kN, they are pressure-resistant and reliably drain off water. In this way, they effectively protect the basement sealing from damage.

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    Anwendung von DELTA®-THENE
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    DELTA®-TERRAXX in vertikaler Anwendung

    Sealing of floor slabs and walls

    In the subsoil, soil moisture is to be expected at any time. By means of capillary forces, the water can also be transported against gravity (suction, adhesive, and capillary water). In order to prevent rising damp inside the masonry, cross-sectional seals (masonry barriers) are used when the water is not pressing. For a comparable reason, the base plates are sealed against capillary moisture. For the sealing inside and under the walls, various DELTA®  sub-base course with different material characteristics are available.

    The cold, self-adhesive bitumen membrane DELTA®-THENE THENE is ideal for the sealing of the floor slab. Due to its high adhesive strength, it can be processed without an open flame. The system is supplemented by the solvent-free primer DELTA®-THENE GRUND INSIDE which has been specially developed for indoor use.

    DELTA®-THENE-GRUND-INSIDE in der Anwendung

    The adequate protection of the basement sealing

    In order for a basement sealing to keep its promise for many years, it should be comprehensively protected. The DELTA® foundation wall protection program secures sealings of all kinds. The proven drainage membrane DELTA®-GEO DRAIN QUATTRO protects pressure-sensitive seals such as bitumen thick coatings (PMBC, formerly KMB) from mechanical damage by means of its factory-integrated protective and sliding layer. For pressure-insensitive seals, we recommend the protective and drainage membrane DELTA®-TERRAXX. Both membranes have integrated self-adhesive edges in the smooth overlap zone. This second, largely water-impermeable shell positioned in front of the actual basement sealing or perimeter insulation, not only protects against mechanical damage, but also reliably conducts moisture away to the ring drainage. Consequently, these sealings make an important contribution to dry basements and to a pleasant indoor climate.

    All our products are characterised by their long service life and by the proven quality by DÖRKEN. Our premium protective and drainage membranes DELTA®-TERRAXX and DELTA®-GEO DRAIN QUATTRO have a tested long-term durability of 100 years. DELTA®-MS DRAIN has a long-term durability of 50 years.

    Play it safe!

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    DELTA®-TERRAXX in der Anwendung mit DELTA®-THENE