Even in the best plumbing systems, leaks happen, often over time and especially at transition areas. Certified green plumber Georg Efird outlines his process for fixing leaky copper pipes. Efird removes leaky joints in two ways: sweating off the joint, which is least invasive; and cutting out the joint, which is necessary if the joint can't be sweated off. Before a repair can be made, you must remove all water from the plumbing system. Next, ream, clean, and apply flux to the fitting. Then heat the pipe and carefully apply solder. Be sure to wipe down the pipe to remove excess flux, which is corrosive. Efird includes several tips, including advice on diverting heat to protect areas surrounding pipe, using bread to manage drips, and crimping joints to help hold unsteady work together before assembly is complete.