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Leaking Gutter Joints
in Fayetteville, NC
Most gutters on Fayetteville homes are made of sectional aluminum joined at seams every ten feet or so. Those seams are held together with a rubber-based sealant that hardens and cracks under the heat of a North Carolina summer. Once a joint opens up, every rain sends a thin stream of water running straight down your siding, and over time that water finds its way behind the wall.
Quick Answer
Gutter joints leak when the sealant between two sections dries out and cracks or when the joint has shifted and opened a gap. Fayetteville summer temperatures regularly top 95 degrees, and that heat breaks down sealant faster than in cooler states. The fix is cleaning out the old sealant and applying a fresh bead, or replacing a badly warped section. Catch it early before the dripping water stains your siding or soaks into the wall behind it. Call (910) 900-6534 if you see water dripping from the middle of your gutter run.
Telltale Signs
Warning Signs to Watch For
- A steady drip or small stream of water falls from a joint during rain, not from the downspout
- Dark staining or green algae marks on the siding directly below a gutter seam
- You can see daylight through the joint when you look inside the gutter from below
- The inside of the gutter near a joint has rust or mineral deposits built up around the seam
- Paint is peeling from siding in a narrow vertical line below a gutter section
Root Causes
What Causes Leaking Gutter Joints?
Dried-Out Sealant
The sealant inside a gutter joint is designed to stay flexible, but Fayetteville gets summer days above 95 degrees that bake it brittle. Once the sealant cracks, water finds the gap on the very first rain, and freeze-thaw cycles in January and February widen the crack a little more each winter.
The Fix
Joint Resealing
The technician scrubs the joint clean of old sealant and rust, dries it completely, and applies a fresh bead of gutter sealant rated for high-heat conditions. The joint needs to cure before the next rain for the seal to hold.
Gutter Section Warping
Aluminum gutters on south- and west-facing sides of homes in neighborhoods like Bordeaux take direct afternoon sun for six or more hours a day in summer. That repeated heating and cooling causes the metal to expand and contract until the joint shifts out of alignment and gaps open even if the sealant is still intact.
The Fix
Section Realignment or Replacement
If the section is only slightly warped, it can be re-seated and re-sealed. If the aluminum has buckled badly, that section gets replaced so the joint sits flat and the new sealant has a solid surface to bond to.
Improper Original Installation
Some older Fayetteville homes had gutters installed with too few hangers between joints, leaving the sections unsupported in the middle. That span flexes under the weight of water and debris, and the joint at each end takes stress it was not built to handle, cracking the sealant from the inside out.
The Fix
Hanger Addition and Joint Resealing
Adding hangers at the correct 24-inch spacing stops the flex, and then the joints get resealed on a stable channel. Without fixing the flex first, new sealant will crack again in one or two seasons.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Dried-Out Sealant | Gutter Section Warping | Improper Original Installation |
|---|---|---|---|
| Cracked or missing sealant visible inside the gutter at the joint | |||
| Joint is visibly out of alignment or one section sits higher than the other | |||
| Leak appears at multiple joints along the same gutter run | |||
| Leak only started after a stretch of very hot weather | |||
| Gutter bounces or flexes when you press down between the hangers |
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