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. For improved adhesion in colder temperatures, use a hair dryer to warm the adhesive prior to application. For best results, apply 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 installed 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 from spreading and enabling wet and dry area separation. Environmentally Friendly Silicone Material: Made from high-quality solid silicone, the shower water barrier is waterproof, safe, odorless, heat-resistant, and durable. The material is soft and flexible, allowing for custom cuts as needed. The smooth surface is easy to clean, helping maintain a neat and tidy bathroom or kitchen environment. Note: This product is designed for straight installations only and cannot be bent. For corner installations, cut each piece at a 45-degree angle and join to form a 90-degree corner for stronger, more durable adhesion.