Cape Coral Docks & Boat Lifts, LLC Seawall Repair & Reinforcement Division (239) 233-3931
Warning Sign

Daylight Or Gaps Under The Cap

If you can see light or open gaps underneath the cap of your seawall, the wall has separated from something it should be sitting flush against.

The cap is designed to sit tight against the wall panels and any backing structure. A visible gap means that connection has opened up — usually from movement, settling, or soil loss underneath.

What causes it

  • Settling or shifting wall panels. As panels move, even slightly, the cap that once sat flush can pull away and leave a visible gap.
  • Soil loss beneath the cap. The same erosion that causes sinking soil in the yard can undermine support directly beneath the cap.
  • Original construction gaps that have widened over years of wave action and thermal expansion/contraction.

Why you shouldn't wait

An open gap gives water an easy new path in and out, which accelerates the soil loss and pressure problems that caused the gap in the first place — a cycle that gets worse the longer it's left alone.

How we fix it

We inspect what's causing the separation first. Depending on the cause, the fix ranges from foam stabilization beneath the cap to full cap removal and replacement with proper sealing.

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Not sure how serious it is?

Tell us what you're seeing and we'll tell you exactly what's happening — and how to fix it.

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