Kantglättning

Kantglättning is a finishing technique used in concrete, plaster and mortar work to create smooth, well-defined edges along perimeters, joints and transitions. The aim is a clean, uniform edge that blends smoothly with the adjoining surface, minimizes ridges and laitance, and improves the overall appearance and durability of the finished work.

Process and timing

Kantglättning is performed after initial leveling and smoothing of the surface, while the material is still plastic but firm enough to support finishing tools. A narrow trowel, edger or margin trowel is guided along edges, corners and around openings to compress the edge, fill minor gaps and remove irregularities. The edge finishing is typically done in coordination with the main surface finishing to ensure consistent texture and level. For vertical edges, different tool angles may be used to achieve a crisp, straight line. Proper timing and a controlled touch are important to avoid overworking or tearing the surface.

Tools and materials

Common tools include edge trowels, edgers, margin trowels and finishing trowels. Materials may be concrete, cement-based mortars or plaster, applied in a process that allows simultaneous edge finishing and surface smoothing.

Applications and considerations

Kantglättning is applied on floors, walls, stairs and around openings where edge definition matters. It enhances adhesion of subsequent layers (such as tile or coatings), reduces chipping risk, and improves aesthetics. Skilled execution is important to avoid creating new imperfections; improper timing or excessive pressure can cause surface tearing or weakened edges.

See also

Trowelling, edging, concrete finishing.