If your downpipe feeds into a buried perforated pipe (French drain) or a solid stormwater line, roots are likely the issue. Professionals use:
In most residential areas, the primary culprit is organic matter that washes off the roof. blocked downpipes
He climbed down, moved the ladder to the side of the house where the downpipe ran, and climbed up again. He shone the light down the dark throat of the pipe. About three feet down, something obstructed the light. If your downpipe feeds into a buried perforated
"Did you fix it?" she asked, not looking up. He shone the light down the dark throat of the pipe
He rolled up his sleeves and went to work. He used a trowel to scoop out the sludge, dropping the wet, heavy mess onto the lawn below. It was messy, cold work. But clearing the top wasn't enough. He needed to check the pipe itself.
Tap the downpipe with a screwdriver handle or a wrench at various heights.