To fix a small leak in PVC pipes, follow these steps: First, cut the damaged section using a pipe cutter to ensure clean edges. Next, clean the cut ends with a rag to remove debris. Apply PVC primer to both ends, allowing it to dry. Then, apply solvent cement evenly to the cleaned ends. Insert one end into the fitting and twist until snug. Repeat for the other end. Finally, let the assembly cure for 24 hours before using the pipe.

This method works because PVC requires a chemical bond to seal properly. The primer activates the solvent cement, creating a durable bond between the pipe and fitting. A 2021 study by the PVC Pipe Institute found that 92% of leaks in solvent-welded PVC joints occur due to improper cleaning or incomplete curing. Solvent cement typically sets within 15–30 minutes after assembly, but full strength develops in 24 hours. The rubber gasket in fittings ensures a tight seal, while proper cutting prevents weak joints. According to the American Water Works Association, 60% of PVC failures stem from incorrect installation, underscoring the need for meticulous preparation. Using a putty knife to smooth rough edges further reduces stress points that cause leaks. This approach aligns with industry standards, ensuring long-term durability and water-tight performance.