Gutters constantly clogging? Here's why

While occasional clogs are normal, your gutters shouldn’t be overflowing on a regular basis. If you’re constantly dealing with backups and clogged downspouts, there’s likely an underlying issue affecting your system. Let’s take a closer look at some common reasons why your gutters keep clogging, despite your best efforts to maintain them.
Debris buildup could be the culprit
While gutters are designed to catch falling rainwater, they can also accumulate a variety of debris. Over time, this buildup can block the flow of water, causing it to overflow and potentially damage your roof, siding and foundation. Some common forms of debris include:
- Leaves and twigs – Oftentimes, leaves and twigs fall are carried into your gutter system by rain or wind. When they start to break down, sludge can build up in your gutters and cause clogs to form.
- Shingle granules – Overtime, asphalt shingles tend to lose their protective granules, which drain into the gutters, contributing to debris buildup.
- Dirt and sediment – Wind can transport dirt and sediment onto your roof, where it’s later washed into the gutter system by rain. If dirt accumulates, it can cause blockages to occur.
- Animal nests – Rodents, birds and insects can take shelter inside your gutters. Using gutter debris, they can build nests that prevent water from draining into the gutter system.
Other reasons your gutters may be clogged
Gutters Aren’t Sloped at the Right Angle
Improperly sloped gutters can cause water to pool instead of flowing smoothly toward the downspouts. When water sits in the trough, it creates the perfect environment for leaves, dirt and other debris to accumulate and cause clogs.
Overhanging Trees
Trees that reside above your home or close to your gutters can drop eaves and twigs directly into your gutters, leading to frequent clogs. As debris builds up, it restricts water flow and can cause your gutters to overflow during heavy rain.

Sagging gutters
When gutters are allowed to sag, they can create crevices for debris to build up. In some cases, improperly placed fasteners may be the reason your gutter is sagging. When incorrectly installed, they can throw off your gutter’s alignment, increasing the risk of clogs.
Normal wear and tear can also weaken fasteners and joints, causing gutters to loosen or sag. When this happens, debris buildup can happen quickly, leading to water overflow.
How can I stop my gutters from clogging?
If your gutters are frequently clogged or you see debris sticking out, it’s likely that your gutters are due for a cleaning. Regular gutter maintenance helps prevent blockages while also allowing for routine inspections. As a general rule, gutters should be cleaned at least twice a year, though some homes may need it more often.
Additionally, regular gutter cleanings provide professionals with the opportunity to inspect your gutters for underlying problems. Experienced roofers and gutter specialists can quickly pinpoint the problem and develop a solution.
By keeping up with cleanings and inspections, you can protect your home from extensive repairs and water damage, both of which are costly to repair. Routine inspections also extend the life of your gutters and provide homeowners with peace of mind knowing their gutters are working properly.

Don’t ignore the issue: Recurring clogs can be costly
If clogs are left untreated, they can wreak havoc on your home. Water can overflow and cause damage to your:
- Foundation – Excess water can erode the soil surrounding your foundation, causing it to shift and crack
- Exterior – Cause your soffits and fascia to deteriorate
- Roof – Constant exposure to water can cause shingles to rot
- Interior – If water gets past your roof, it can cause damage to your walls, ceilings and basement
Looking for Dependable Roofing Services? Call Valiant Roofing Today!
Looking for reliable gutter services? Our team at Valiant Roofing is here to help! Based in Vancouver, we proudly serve communities across Washington and Oregon, including Portland. We offer expert gutter installation and replacement, ensuring your system protects your home for years to come.
If you’re ready to upgrade or maintain your gutters, call our team today at 360-523-1445. For more information about our full range of services, including roofing and siding, visit our website by clicking the link here.