Easy to Install: Clean and dry the surface before installation. Measure and cut the shower water stopper to the desired length. Peel off the red adhesive backing and apply to a smooth, flat surface. In colder temperatures, use a hair dryer to warm the adhesive for improved stickiness. For a better seal, apply a silicone sealant along the edges of the water barrier and allow 24 hours for full curing (silicone sealant not included). Solve Water Leak Problems: The water dam barrier provides effective waterproof protection. It can be used on shower floors, shower trays, kitchen sinks, under bathroom doors, bathtub edges, around washing machines, or toilets to create a reliable water barrier, preventing water spread and enabling wet and dry separation. Environmentally Friendly Silicone Material: Made of high-quality solid silicone, this shower water barrier is waterproof, safe, odorless, heat-resistant, wear-resistant, and durable. The threshold strip is soft and flexible, allowing for custom cuts. The smooth surface is easy to clean, helping maintain a tidy and hygienic environment. Note: The splash guard is designed for straight installation only and should not be bent. At corners, cut each piece at a 45-degree angle and join to form a 90-degree splice for stronger adhesion.