If the clog persists remove the hose and manually clear it using a plumbing snake.
Best way to snake a clogged gutter.
Turn the hose on at full pressure to try to dislodge the clog.
Remove the snake from the pipe.
Feed the hose up the downspout from the ground.
Run the snake as far into the pipe as far as you can.
Use your garden hose to run water into the gutters and through the downspout to be certain that it is no longer clogged.
Insert a garden hose in the downspout and turn on the water to flush out any debris.
Insert the end of the plumber s snake in the downspout until it meets resistance.
If the moisture and decaying organic matter in a clogged system isn t the primary draw then it s often the fact that gutters high above.
Run water into the opposite end of the pipe.
Start by cleaning the bottom downspout opening.
But normally you will not have this problem.
Watch the end of the downspout for the clog to clear.
If the clog is below grade it s the most difficult to clear and may require excavation.
Place the end of a plumber s auger also known as a snake into the underground gutter.
If you can t reach it simply disassemble the downspout and remove the clog.
Feed the snake from the top of the downspout until it hits the obstruction which will usually be found at a curve in the downspout pipe.
Turn the crank and work it back and forth to loosen the clog.
Turn the handle counterclockwise if it becomes hard.
Gutters are a beacon to pests for more than one reason.
Turn on the water spigot wide open to create as much pressure as possible.
If the water does not flow freely through the downspout use your plumbing snake to clear away the last of the stuck debris.
Try to free the obstruction with a stick plumbing snake or pressure washer outfitted with a telescoping wand.
Turn the handle clockwise to extend the end of the auger.
Turn the hose on and spray down the spout.
Run the snake into the opposite end of the drain if it was not long enough to go through the entire pipe from the other end.