Schlüter-TREP-V  Visually appealing, guideline-compliant stair nosing profile

Schlüter-TREP-V are special aluminium stair nosing profiles with a reversible slip resistant PVC tread insert for installation in interior spaces.

The profiles are suitable for installation with tiled or natural stone coverings, but can also be installed in screeds or other coating materials for the safe and visually appealing design of barrier free stairs.

The profiles are fitted with specially textured, slip resistant treads. This makes them particularly suitable for property areas with high footfall, such as business premises or public buildings. The profiles have an appealing design and are therefore also well suited for use in a residential setting. The treads can be subsequently replaced in case of damage or wear. The slip resistance properties of TREP-V inserts were tested according to DIN EN 16165 and classified as R10. Matching end caps are available as accessories.

1. Select the TREP-V profile according to the tile thickness and laying method.
2. First, install the riser coverings to the appropriate height.
3. Apply suitable tile adhesive along the edge area above the riser.
4. Fill the hollow spaces on the underside of the profile with suitable tile adhesive. Note for steps 3 and 4: In case of thicker adhesive layers in the edge area, it may be necessary to add sand to the dry-setting thin bed adhesive in accordance with manufacturer instructions or to use a medium bed mortar.
5. Embed the TREP-V profile fully into the adhesive bed and align the profile in such a way that the front edge of the support section is flush with the riser tile.
6. Completely cover the trapezoid perforated anchoring leg and the tread of the stair step with tile adhesive.
7. Solidly embed the horizontal tiles and align them flush with the top edge of the profile. Full coverage must be obtained between the tile and the profile’s anchoring leg. The profile may slightly protrude or be recessed in the area of the riser tile to offset dimensional variations in the covering material. The profile should not be higher than the tiled surface on the tread, but rather up to approx. 1 mm lower.
8. Leave a gap of approx. 2 mm between the profiles.
9. Completely fill the space from the tiles to the profile with grout. We recommend covering the tread with a suitable adhesive tape before applying grout.

The TREP-V profile comprises an aluminium support section that are fitted with a tread insert consisting of a PVC-U (rigid PVC) base section and a PVC-P (soft PVC) slip resistant surface.

The support section includes a trapezoid perforated anchoring leg for installing the profile in freshly installed tile adhesive or epoxy resin.

In the case of the TREP-V 42/12 profile, the insert has a visible width of 42 mm at tread tiles and 12 mm at riser tiles, while TREP-V 60/32 features a visible width of 60 mm at the tread tiles and 32 mm at the riser tiles. The plastic insert is available in seven different colours. Their light reflectance values or reflectance and luminance factor were determined in a laboratory. These values are required for calculating visual contrast according to DIN 32975 (see Technical data). Our working aid contains additional information for calculating visual contrast.

Material properties and areas of application

Check on a case-by-case basis whether the intended profile type is suitable for the expected chemical, mechanical or other stresses.

The TREP-V profiles are resistant to chemical stresses, often encountered in tiled coverings on stairs or steps. Aluminium is sensitive to alkaline media.

Cementitious materials, in conjunction with moisture, become alkaline. Since aluminium is sensitive to alkaline substances, exposure to the alkali (depending on the concentration and time of exposure) may result in corrosion. Avoid any cavities in which alkaline water can collect must by ensuring that the profile and adjacent tiling are fully embedded in the setting material. The support sections and treads of the TREP-V profile differ in their thermal expansion.

Abutting profiles should therefore be aligned with the joints of the adjacent covering if necessary.

Note: The profiles are exclusively suitable for use in interior spaces.