If you're trying to connect two pieces of channels, you'll likely need an elbow joint. You can buy these at most home improvement stores. Simply measure the length of each section of gutter you're trying to connect and cut the corresponding piece of elbow joint to size. Then, using a hacksaw or a sharp knife, cut notches into both ends of the elbow joint (one end for each piece of gutter) and snap them into place.If you're trying to connect two pieces of channels, you'll likely need an elbow joint. You can buy these at most home improvement stores. Simply measure the length of each section of gutter you're trying to connect and cut the corresponding piece of elbow joint to size. Then, using a hacksaw or a sharp knife, cut notches into both ends of the elbow joint (one end for each piece of gutter) and snap them into place.

First, you need to identify which end is up and which end is down. The end that's up will have the slope facing downwards so that the water will flow into the gutter. The downspout will be at the bottom of the slope. The second step is to measure and cut each piece of channel to size. Make sure that when you're measuring, you leave enough room for a joint (about 1/4"). Use a hacksaw or tin snips to cut the channel. Be careful not to cut yourself! The third step is to join the two pieces of channel together. To do this, use