How Do I Know If My Gutters Are Blocked?

Blocked gutters aren’t always obvious — until they start causing visible damage.

So how can you tell if your gutters are clogged?

There are several warning signs that indicate your gutters may be blocked and in need of professional cleaning.

Catching the problem early can prevent costly roof, siding, and foundation damage.

Water Overflowing During Rain

One of the clearest signs of blocked gutters is water spilling over the sides during a storm.

If rainwater isn’t flowing smoothly through the downspouts, debris may be obstructing the system.

Overflowing gutters can quickly lead to:

• Roof edge damage
• Siding streaks
• Water pooling near the foundation

If you see a “waterfall” effect during rain, it’s time to schedule professional gutter cleaning service.

Sagging or Pulling Gutters

When gutters fill with debris and standing water, they become extremely heavy.

This added weight can cause:

• Gutters to sag
• Brackets to loosen
• Sections to pull away from the building

Sagging gutters are a strong indication of trapped debris.

Plants or Grass Growing in Gutters

If you can see vegetation growing from your gutters, debris has likely accumulated for an extended period of time.

Leaves and organic material create the perfect environment for seeds to sprout — especially in New England’s wet climate.

Visible plant growth is a clear sign that cleaning is overdue.

Water Stains on Siding

Blocked gutters often cause water to run down exterior walls instead of through downspouts.

Look for:

• Dark streaks
• Peeling paint
• Mildew growth
• Discoloration below the gutter line

These marks suggest improper drainage.

Pooling Water Around the Foundation

If you notice water collecting near the base of your building after rainfall, your gutters may not be directing water away properly.

Foundation pooling can lead to:

• Basement leaks
• Mold growth
• Structural settlement

Gutter blockages are often the hidden cause.

Insects and Pest Activity

Clogged gutters filled with damp debris attract:

• Mosquitoes
• Ants
• Birds
• Rodents

Standing water and organic buildup create ideal nesting and breeding conditions.

Ice Dams in Winter

In colder climates, blocked gutters contribute to ice dams along the roofline.

If you see icicles or thick ice forming along the gutter edge, debris may be preventing proper drainage.

When Should You Schedule Gutter Cleaning?

If you notice any of these warning signs, don’t wait.

Most properties benefit from professional gutter cleaning at least once per year — typically in the fall.

Commercial properties, condos, schools, and buildings surrounded by trees may require more frequent service.

Final Answer: How Do I Know If My Gutters Are Blocked?

Overflowing water, sagging gutters, plant growth, siding stains, foundation pooling, and pest activity are all signs your gutters may be clogged.

Blocked gutters can quickly lead to costly damage — but routine cleaning prevents these problems before they escalate.

If you suspect your gutters are blocked, contact OFF THE WALL today to schedule professional gutter cleaning and protect your property.