How to Unclog Exterior Downspouts and Gutter Systems

Gutters are the unsung heroes of your home's exterior, quietly diverting hundreds of gallons of water away from your foundation every time it rains. When these channels become choked with leaves, pine needles, and silt, that water has nowhere to go but over the sides or, worse, directly into your basement. A clogged system is a direct threat to your siding and foundation, so addressing it is not a luxury; it is basic home preservation. Done well, a gutter cleaning leaves your system flowing freely and your downspout exits clear of debris. You do not need expensive power washers or specialized chemical cleaners to get this job done right. A steady hand, a sturdy ladder, and a bit of focused pressure are all it takes to restore the integrity of your home's water management system.

  1. Anchor Your Ladder Right. Set your ladder on firm, level ground, ensuring it extends at least three feet above the gutter line. Never lean a ladder directly against the gutters themselves, as this can bend or crush the metal flashing; use a ladder standoff attachment instead.
  2. Scoop Out the Bulk. Work your way along the gutter, scooping out leaves and mud by hand into a plastic bucket. Start at the end farthest from the downspout and work toward the drain opening, being careful not to push debris into the downspout intake.
  3. Rinse It Toward the Drain. Once the bulk of the debris is removed, use a garden hose with a high-pressure nozzle to rinse the remaining silt toward the downspouts. Use a gentle sweeping motion to push the fine material toward the outlets.
  4. Clear the Outlet Opening. Check the gutter outlet—the opening where the gutter meets the downspout—for any trapped sticks or compacted leaves. If it is obstructed, pull the blockage out by hand rather than forcing it down the pipe.
  5. Blast Out the Blockage. Insert your hose nozzle directly into the top of the downspout and turn the water on to high pressure. If the water backs up, move the hose up and down vigorously to break apart the obstruction inside the pipe.
  6. Confirm Water Flows Free. Run the hose until the water exiting the bottom of the downspout runs clear. If the downspout empties into an underground drain, ensure the water is actually exiting the drain pipe and not pooling at the foundation.