Why Is Water Dripping from the Gutter Corners?

If you’ve seen water dripping from the corners of your gutters after a storm, you’re not alone — it’s one of the most common issues Arizona homeowners face. The desert heat makes gutter metal expand during the day and contract at night, and that constant motion eventually loosens the seams. Once small gaps form, water begins to leak through every time it rains.

At CR Gutters, Inc.™, we see this all the time — and the good news is that it’s usually an easy fix when handled early. Addressing these leaks right away helps you avoid larger problems later, like stained stucco, rotted fascia, or even foundation damage.

Why Gutter Corners Start Leaking

Quick answer: Heat expansion cracks the seam sealant at your gutter corners.

Arizona’s daily temperature swings are tough on gutters. Each day, the metal stretches under the sun and shrinks as the desert cools. Over time, this movement cracks the old sealant inside the corners. Add dust buildup and a few monsoon storms, and those cracks quickly turn into steady drips.

Common signs include:

• Water dripping or streaming from the corners during rain
• Dark streaks or rust stains near the joints
• Peeling or softened paint on the fascia board

Once water begins slipping through the seams, it can quickly wear down everything beneath it.

How to Fix the Problem

Try this: Reseal the corners using a high-temperature gutter sealant designed for Arizona’s climate. It stays flexible, so it won’t crack again in the heat.

Remove the old caulk, clear out debris, and make sure the area is completely dry. Then apply a smooth, even bead of sealant inside the corner joint. Once it cures, run water through the gutters to confirm the leak is gone.

Stop signs: If you’ve already sealed the corners more than once and they’re still leaking, the metal may have warped or corroded. In that case, replacing the affected section — or the entire run — is usually more cost-effective than patching again.

What It Costs

Typical cost:

• Corner repair or reseal: $150–$300 per corner
• Full gutter replacement: $2,500–$5,000+, depending on material and home size

Small repairs often buy you several more years of performance. But if your gutters are sagging, rusting, or leaking in multiple spots, replacing them with seamless aluminum is usually the best long-term solution. Seamless systems eliminate the weak points where leaks begin and stand up well to Arizona’s heat.

Fix Corner Leaks the Right Way with CR Gutters, Inc.™

A small drip might not look serious, but over time it can lead to damaged fascia, mold, or even cracks in your slab or foundation. Fixing it early keeps your home protected and saves you from expensive repairs later.

At CR Gutters, Inc.™, we install seamless gutter systems built to handle Arizona’s blazing heat and sudden monsoon storms. Call us today at (602) 671-3476 to schedule your inspection. We’ll pinpoint the cause of the leak, repair it correctly, and help protect your home for years to come.