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If your eavestrough (gutter) is leaking, dripping, or overflowing in Toronto’s climate, you’re not alone. These issues can lead to foundation damage, basement leaks, and rotting fascia. Here are the 7 most common reasons for a leaky or dripping eavestrough and how to fix them.

1. Clogged Eavestroughs and Downspouts

Leaves, twigs, shingle grit, and debris can block water flow, causing overflow or dripping at corners and seams. It’s one of the most common causes of eavestrough problems in Toronto, especially during fall.

Fix: Flush your eavestrough with a hose, clear out debris by hand or use a leaf blower attachment. Ensure downspouts are draining properly with no clogs at the connection or underground drain. Consider installing gutter guards to prevent future buildup and cleaning your eavestrough yearly.

2. Leaky Eavestrough Joints and Seams

Older sectional eavestroughs are especially prone to leaks at joints where two pieces meet. The sealant can dry out or crack over time, especially with Toronto’s freeze-thaw cycles.

Fix: Clean the joint thoroughly, remove any old sealant, and reapply a high-quality outdoor gutter sealant. For persistent issues, replace the joint connector or consider upgrading to seamless aluminum gutters.

3. Improper Slope or Sagging Gutters

Gutters need a gentle slope (about 1/4 inch per 10 feet) toward the downspout. Sagging sections or improper pitch lead to standing water, dripping from the bottom, or overflow during heavy rain.

Fix: Check for standing water with a level. Refasten gutter hangers or install new hidden hangers to correct the slope. Replace bent or warped sections that won’t hold proper alignment.

4. Missing or Faulty Drip Edge

A drip edge is a metal flashing installed under the shingles to direct water into the eavestrough. Without it, water can run behind the gutter, causing leaks down the siding or fascia rot.

Fix: Have a contractor install a drip edge under the shingles and over the back of the gutter. It’s a relatively low-cost upgrade that prevents long-term damage.

5. Downspout Leaking at Connection

If you see water leaking where the downspout meets the gutter or at pipe elbows, the connection may be loose or the seams unsealed.

Fix: Tighten screws or rivets, apply aluminum gutter sealant around joints, and check for clogs in the vertical downpipe.

6. Loose Eavestrough Nails or Fasteners

Nails or spikes used in older installations often loosen over time, pulling the gutter away from the fascia and creating gaps for water to leak through.

Fix: Replace old spikes with modern screw-in gutter hangers spaced every 18 to 24 inches for a secure fit.

7. Ice Dams and Winter Freeze Damage

In Toronto winters, melting snow can refreeze at the eaves, creating ice dams that force water under shingles or over the gutter’s edge.

Fix: Improve attic insulation and ventilation to reduce snowmelt. Consider installing heat cables along the edge to prevent ice buildup.

Is It Normal for Gutters to Drip?

A slight drip after rain can be normal as gutters finish draining. But if you notice consistent dripping, leaking at seams, or water coming from behind the gutter, it indicates a problem worth fixing promptly, preventing further leaking eavestrough.

Should You DIY or Call a Professional?

Minor issues like clogged gutters or resealing joints are DIY-friendly for most homeowners to fixed by yourself. But if your eavestrough is sagging, has complex leaks, or is causing siding/foundation damage, it’s best to call an eavestrough repair specialist in Toronto. They can also assess if replacement is more cost-effective.

FAQ: Dripping & Leaky Eavestroughs

Why are my gutters dripping after rain?

Most likely due to clogs, sagging, or leaking joints. A proper inspection will pinpoint the cause.

What is a drip edge and do I need one?

A drip edge is flashing that directs water into the gutter. Yes, it’s recommended for all installations to prevent water going behind the gutter.

How do I fix water dripping from the bottom of the gutter?

This is usually from rust holes or cracked seams. Use gutter patch tape or replace the affected section.

Can I use caulking to stop gutter leaks?

Yes, use outdoor-rated aluminum gutter sealant on clean, dry surfaces.

Should I replace gutter nails with screws?

Yes, gutter screws or hidden hangers offer stronger, longer-lasting support than old-style nails.