Stop soil escaping between panels
The joints between seawall panels are designed to let water drain but hold soil back, usually with filter fabric behind the seam. When that fabric tears or degrades, every tide pulls a little more soil into the canal.
How to spot a seam leak
- Muddy plumes at seams on an outgoing tide
- Visible gaps or daylight between panels
- Small sinkholes or depressions directly behind a seam
- Sand or soil piles at the base of the wall
Repair methods
- Seam patches (aluminum, composite, or concrete) installed on the canal side
- Grout or polyurethane injection behind the seam
- Replacing filter fabric during excavation
- Restoring filtered weep holes so water drains without soil
Addressing seam leaks early is one of the most cost-effective ways to extend a seawall's life.
Related Seawall Repair Topics
Seawall RepairSeawall ReplacementCap RepairTiebacks & Batter PilesVinyl OverlaysSeawall InspectionSinkholes Behind WallLeaning SeawallCracked PanelsStorm DamageCost Guide
Frequently Asked Questions
How much does seam repair cost?
Often a few hundred to about $1,500 per seam, depending on method and access.
Do seam patches need a permit?
Requirements vary. A local contractor will know whether your repair needs one.
Ready for a straight answer? Tell us about your project and we'll connect you with a licensed, insured local pro for a written quote.
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