Gutter Flushing
Gutter flushing is running water through gutters and downspouts after the debris is removed to confirm that everything drains. It washes out fine silt and shingle grit and reveals leaks, low spots, and clogged downspouts that dry cleaning would miss. It is the test that proves a gutter cleaning actually worked.
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In depth
Scooping out leaves leaves a sludge of grit, seed, and silt behind, and a clog hidden in a downspout elbow can look fine from the ladder. Flushing from the high end toward the downspout shows standing water, which points to poor pitch, and drips at seams or end caps, which point to seam failure. If water backs up or drains slowly at the base, the downspout or underground drain line is blocked. The discharge should be directed away from the foundation so the test does not soak the basement wall.
How this shows up on our jobs
Madison gutters fill with oak and maple debris in fall and maple seeds in spring. Downspout flushing is part of our gutter service, because a gutter that is clean but does not drain is still a problem waiting for the first hard rain.
Services where this matters
Frequently asked
- What is Gutter Flushing?
- Gutter flushing is running water through gutters and downspouts after the debris is removed to confirm that everything drains. It washes out fine silt and shingle grit and reveals leaks, low spots, and clogged downspouts that dry cleaning would miss. It is the test that proves a gutter cleaning actually worked.
- How does Gutter Flushing show up on our jobs?
- Madison gutters fill with oak and maple debris in fall and maple seeds in spring. Downspout flushing is part of our gutter service, because a gutter that is clean but does not drain is still a problem waiting for the first hard rain.
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Related terms
Gutter Pitch
Gutter pitch is the slight downward slope built into a gutter run so water flows toward the downspout instead of pooling. A common rule of thumb is about a quarter inch of drop for every ten feet of gutter. Too little pitch leaves standing water, and too much looks wrong and can overshoot the downspout.
Gutter Seam Sealing
Gutter seam sealing is applying a flexible, waterproof sealant to the joints where gutter sections, corners, end caps, and downspout outlets meet, to stop drips and leaks. Most gutters leak first at these connection points, because sealant dries, cracks, and pulls apart with age and temperature swings.
Downspout Extension
A downspout extension is a length of corrugated plastic pipe or aluminum channel attached to the bottom of a downspout outlet to direct water away from the foundation of the house. Standard downspout outlets terminate 6-12 inches above grade, which deposits water immediately against the foundation — exactly where it enters basements and crawl spaces. An extension routes that discharge 4-10 feet away from the house to a splash block, a dry well, or a buried drain tile.
Splash Block
A splash block is a small trough or pad, usually concrete or plastic, that sits under a downspout outlet to catch roof water and send it away from the foundation. It protects the soil from erosion and moves water a short distance from the house, and it is the simplest downspout discharge fix.
Gutter Guard
A gutter guard is any cover, screen, insert, or hood system installed over or inside gutters to reduce the amount of debris that enters the trough and clogs the downspouts. There are five main categories: fine-mesh screens (most effective for large debris), micro-mesh (very fine, catches small needles and seeds), solid reverse-curve hoods (water clings and flows in, debris falls off), foam inserts (fill the gutter with foam through which water seeps), and bottle-brush inserts (same concept as foam).