Towel rails
Sealing all-purpose plug
Aqua Stop Pro
Since October 2025 in Germany (DIN 18534) and May 2025 in Switzerland (SIA 271/1), revised regulations for waterproofing in wet areas have been in force.Both standards place greater emphasis on permanently watertight, subsequent fixings where sealing plugs with proven suitability must be used. The Aqua Stop Pro meets these requirements and offers a reliable, compliant, and silicone-free solution for fixings on tiled walls in bathrooms, showers, and kitchens.
Previously, drill holes in wet areas had to be laboriously resealed with silicone or sealing compound to protect them from moisture – a process that is time-consuming, costly, and does not comply with DIN 18534 or ETAG 022. Silicone always provides only a temporary seal that requires regular renewal. Inadequate sealing can lead to structural damage and mould growth over time.
With the Aqua Stop Pro and the matching stainless steel screw, drill holes in wet areas can be reliably sealed – safely, cleanly, and permanently watertight.
Features
- Double sealing lips for optimum sealing between plug and building material – without the use of silicone
- Special HDPE material: no change in material properties on contact with water
- Optimised all-purpose geometry to simplify knotting
- Eight wedge rotation locks on the plug prevent rotation in the drill hole
- NEW: detachable collar can be removed before or after setting the plug for flush installation
- Collar protects the tile during installation
- NEW: TX drive for ideal power transmission
- Stainless steel screw prevents unsightly rusting
- Independently tested by the Institute for Wall and Floor Coverings “Säurefliesner-Vereinigung e.V.”
Description & Area of Application
- The sealing function of the Aqua Stop Pro with the corresponding screw has been independently tested in accordance with ETAG 022 and the new DIN 18534. It is suitable for subsequent fixings in water exposure classes W0-I to W3-I
- Sealing all-purpose plug for fixings to tiled walls and floors in private and commercial rooms such as bathrooms, showers or kitchens
- For fixings in tiled areas of bathrooms – e.g. for shower rails, soap dishes, towel rails, bath handles, etc.
Application examples
Bath handles
Shower shelves
Shower rails
Lightweight wall cabinets
Fixings around swimming pools and shower facilities
Installation
* optionally remove the collar
Application video
Water exposure classes according to DIN 18534
DIN 18534 distinguishes four water exposure classes (W0-I to W3-I) for waterproofing in interior spaces.
They are defined by the type and intensity of water exposure on a surface and serve as the basis for planning and selecting suitable waterproofing measures.
As part of the planning process, each relevant surface is assigned to a corresponding water exposure class depending on how strongly it is exposed to moisture or direct water. For guidance, the standard specifies typical applications: surfaces with low water exposure, such as in guest toilets, fall into class W0-I, while shower areas or commercial kitchens are already classified as W2-I. Swimming pools fall into the highest class, W3-I, as they are subject to constant high water exposure and often chemical stresses.
In principle, the higher the class, the greater the requirements for the waterproofing and for all components that penetrate it:
- W0-I:
Represents low water exposure, for example wall surfaces outside direct splash areas in guest toilets - W1-I:
Describes areas with moderate water exposure, such as walls in the area of bathtubs and showers in domestic bathrooms - W2-I:
Covers surfaces with frequent splash water exposure and temporarily accumulated water, such as in swimming pools, public showers, or sports and commercial facilities - W3-I:
Applies to areas with very high water exposure, for example surfaces in the vicinity of swimming pools, shower facilities, and sports or commercial areas where additional chemical stresses must also be taken into account
The classification becomes particularly relevant wherever drilling or fixings are carried out afterwards – for example when installing shower rails, towel rails, or shelves. Such interventions can penetrate the waterproofing layer and must therefore be carried out using approved sealing fixing solutions.
