Wet Stringers? Here Are Your Real Repair Options

Wet stringers. The two words no boat owner wants to hear.

Maybe it came up in a survey. Maybe your moisture meter lit up like a slot machine. Either way, someone just told you your boat has wet stringers, and now you're doing math you really don't want to do.

Take a breath. Wet stringers feel like the end of the world, but they're a fixable problem. You have more options than you've been told, and at least one of them doesn't involve a saw.

A quick refresher on wet stringers

Stringers are the structural backbone of your boat. On most fiberglass boats, they're built like a sandwich: a fiberglass skin with a balsa, plywood, or foam core inside. When water finds its way into that core, you've got wet stringers. (For the full rundown on how that happens, see our guide: What Are Wet Stringers?)

This isn't a cosmetic problem. Left alone, water in the core can lead to rot, delamination, weakened structure, and a failed marine survey, which can stall a sale, financing, or an insurance renewal. So yes, it matters. But "it matters" and "your boat is scrap" are two very different things.

Your options when you discover wet stringers

Option 1: Ignore it and hope for the best

We get the appeal. We don't recommend it. Wet stringers don't dry themselves out, and the longer water sits in the core, the more likely you are to move from "wet" to "rotted." It also won't help you pass the next survey.

Option 2: Sell the boat as-is

You can, but a buyer's surveyor will likely find the wet stringers too. That usually means a steep discount, a buyer who walks, or a long wait for someone willing to take on the project.

Option 3: Tear out and replace the stringers

This is the traditional fix, and it's as fun as it sounds. The repair shop cuts away the fiberglass skin, digs out the wet core, builds new stringers, and re-glasses everything.

It works, but it turns your boat into a construction site. Tear-out typically means months in the yard, and the visible repair scars and non-factory glass work can permanently lower your boat's resale value. Boats with visible repairs are also harder to sell.

Option 4: Dry the wet stringers in place

This is the option most owners never hear about, and it's what we do at Dryboat. Instead of tearing your stringers out, we dry them right where they are.

We start by mapping exactly where the moisture is, then create a few small access points in the wet areas. Our patented system blows warm, super-dry air deep into the core, and once moisture meters confirm the stringers meet surveyor specs, we fill the access points with epoxy, sand, and paint for a seamless finish. You can read more about how our process works.

There's no cutting away the skin, no demolition, and no months in the yard, so your boat keeps its original factory structure and its value. We've dried thousands of stringers this way, and boats treated with the Dryboat method have a 100% marine survey pass rate. Our equipment is mobile too, so we come to your marina, boatyard, or storage facility anywhere in the U.S. and Canada, plus Mexico, the Bahamas, and the Caribbean.

What does it cost to fix wet stringers?

The honest answer is that it depends on your boat. But it helps to know where the money goes.

With tear-out and replacement, you're paying for demolition, new core material, fiberglass work, fairing and finish work to hide the repair, and yard fees for however many months the boat sits there. Costs can also climb once the shop opens things up and finds more damage than expected. Drying typically costs less, because there's no demolition and no rebuild.

For a ballpark on your own boat, try the savings calculator on our homepage. Pick "Stringers," enter the linear feet affected, and see how tear-out compares to drying.

Can you dry wet stringers yourself?

It's a fair question, and plenty of owners try. The usual DIY approach is a dehumidifier in the bilge, a heat lamp or space heater, and maybe a few drilled holes.

The catch is that stringer cores are sealed inside fiberglass, and the water is deep in the core, not sitting on the surface. Warming the bilge can make surface readings look better while the core stays wet, which is a frustrating surprise when the surveyor puts a meter on it. Drilling holes without knowing where the moisture is can also let more water in or weaken the laminate. If you need the boat to pass a survey, it's worth having the drying done with moisture readings to back it up.

When drying isn't the right fix

Drying works on cores that are wet but still sound. If a wood core has already rotted, there's nothing left to dry, and it has to be replaced. The same goes for delamination, where the fiberglass has separated from the core, and for stringers that are cracked or have broken away from the hull. Those call for structural repair.

That's why the first step is always an evaluation, so you know which situation you're in before any work begins.

Quick answers about wet stringers