How to Find a Leak in Waders

Start with where it got wet

A leak search is easier if you know what you felt. A cold patch on the thigh that appears when you sit points to a different place than damp socks after a long wade. Before you test anything, write down roughly where the water came in and when: sitting, kneeling, wading deep, or all day.

The Wet Sock Index runs from damp suspicion to being part of the river, and the earlier on that scale you catch a leak, the fewer places it can be. (The index is a joke of mine, not a test. Nobody measured anything.)

Then pick a method. The two that I found described by name, one from Orvis and one from iFixit, work in different ways, and neither needs special gear. Do the visual check first, because it is free.

Step 1: dry them and look

Dry the waders completely first. The Orvis UK care page suggests using drying time to check for tears or abrasions that could become leaks. That is the right moment: hang them, turn them inside out, and look closely at:

• the seat and the knees, where fabric folds and rubs;
• the seams and the seam tape, where the tape may be lifting;
• the feet, especially neoprene booties, where grit wears the surface;
• zippers, pocket seams and strap anchors on the outside.

Look for thin patches, stiff or discolored spots and small holes. Simms notes that a single pinhole may not cause a noticeable leak but can multiply into something worse, which is the reason to look even when nothing feels wet.

Step 2: the rubbing alcohol test

Orvis describes this one in four steps:

1. Turn the waders inside out.
2. Spray the suspected area with rubbing alcohol, then spread it over the inside fabric with your hand.
3. Turn the waders right side out. A dark spot appears on the outer fabric where the leak is.
4. Mark the spot on both the outside and the inside.

It is quick, uses a household product and suits a leak you can narrow to one area. It is not a way to search the entire pair in one go, so if you do not know the general area, use the next test.

Step 3: the hose and ladder fill test

This test comes from an iFixit guide written for Patagonia waders, but it is a plain fill test that applies to any waders you can turn inside out. The steps:

1. Put a ladder on level ground where getting wet does not matter. Turn the waders inside out and clip them to the ladder.
2. Slide a garden hose into one leg and let the waders fill with water.
3. Watch for leaks and mark each one with a permanent marker.
4. Repeat for the other leg.
5. Empty the water and let the waders dry completely before doing anything else.

The one warning in the guide is real: the weight of the water can tip the ladder. Watch it while it fills, and weigh down the back of the ladder if needed. I would also not do this over a hard surface you care about, and not with the hose on full.

Which test for which problem

• You know roughly where it is: alcohol test.
• You have no idea where it is and you can turn the waders inside out: fill test.
• You can see a worn patch or lifted tape: no test needed. Mark it and start the repair.
• The leak is in the feet of a bootfoot pair: check the manufacturer's guidance before you go further, because the pages I opened do not give a bootfoot-specific method.

After you find it

Mark every spot on both sides before the waders dry, because marks are the only thing that lets you find a pinhole twice. Then dry the waders completely.

For the repair, the Orvis page describes a field fix for punctures:

1. Clean the area with rubbing alcohol.
2. Apply Aquaseal over the spot, extending about 1/8 inch beyond it, on the outside.
3. Let it dry for about 12 hours. Cotol can speed this up.
4. Repeat on the inside.
5. For a large puncture or a high-wear area, add a second coat extending 1/8 inch beyond the first.

Orvis is clear that Aquaseal provides a temporary field repair and is not durable enough for a permanent one. For tears, Orvis tapes the inside to line up the edges, then follows a similar process. Our wader repair kits page lists kits by repair type, and the wader repair guide covers the repair side in more depth.

Before you patch: warranty

Simms says on its care page that DIY repairs, including pinhole patching, can affect your warranty, and gives a phone number to call if you are unsure. That applies to any maker: if the waders are young, ask first. A patch is hard to take back. See our Simms wader repair guide if the pair is a Simms, or the Orvis page if it is an Orvis.

Stop the next one

The best leak test is not needing one. Rinse, wash on the maker's schedule and dry fully, which our how to clean waders guide walks through. Orvis UK points out that mold breaks down breathable fabric and causes leaks, so a damp closet can do what a rock cannot. If your waders are past repair, that page lists current pairs.