The two most frequent causes of seal failure in modern showers can be attributed to the lack of sealing material elasticity to accommodate joint movement and the inability of sealing material to withstand aggressive shower environments.
Trimlux is a two part shower seal that combines a PVC trim with silicone. Each trim has a toothed inner leg that after installation remains anchored to the ledge when the silicone has cured.
Joint movement is accommodated through deflection in the curved outer leg.
Seal durability is accommodated through the silicone remaining concealed and protected from the shower environment inside the trim.