If you’ve ever been out hiking in the rain and noticed your waterproof jacket starting to darken and absorb water, you’ve likely experienced something called wet-out.

At first glance, it might feel like your jacket has completely stopped being waterproof. But in many cases, that’s not actually what’s happening.

Wet-out occurs when the outer fabric of your jacket absorbs water instead of repelling it. The good news? It’s a common issue — and usually an easy one to fix with the right care.

Let’s break down what wet-out is, why it happens, and how you can restore your jacket’s performance.

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What Exactly Is Wet-Out?

Waterproof jackets are typically made from two key components:

1. A waterproof membrane (like GORE-TEX or similar fabrics)

2. A Durable Water Repellent (DWR) coating on the outer fabric

The DWR coating is what causes rain to bead up and roll off the surface of the jacket.

When this coating wears down or becomes contaminated with dirt and oils, water stops beading and begins soaking into the outer layer. This is known as wet-out.

You’ll usually notice:

• Dark patches appearing on the fabric

• Water soaking into the outer layer

• The jacket feeling heavier in rain

Even though the membrane may still be waterproof, the jacket won’t perform as well.

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Why Wet-Out Makes You Feel Wet

One of the most frustrating things about wet-out is that it can feel like your jacket is leaking, even when it isn’t.

When the outer fabric becomes saturated:

• Breathability drops significantly

• Sweat and moisture get trapped inside

• Condensation builds up

This trapped moisture can make it seem like rain is getting through the jacket, when in reality it’s internal moisture that can’t escape.

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What Causes Wet-Out?

Wet-out usually happens over time as outdoor gear is exposed to the elements.

Some of the most common causes include:

Dirt and Oils

Mud, sweat, sunscreen, and everyday dirt can all build up on the surface of your jacket. This contamination prevents the DWR coating from working effectively.

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Regular Wear and Use

Backpacks, shoulder straps, and general abrasion gradually wear down the water-repellent coating.

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Washing with Regular Detergent

Household detergents can leave behind residues that interfere with waterproof coatings and breathable membranes.

This is why specialist cleaning products designed for outdoor gear are recommended.

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How to Fix Wet-Out

Fortunately, wet-out is usually easy to fix with proper cleaning and reproofing.

In many cases, your jacket simply needs a good wash and a refreshed water-repellent coating.

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Step 1: Clean Your Jacket Properly

The first step is removing dirt, oils, and residue that may be blocking the DWR coating.

Using a specialist cleaner designed for outdoor gear — such as those from Grangers — helps remove contaminants without damaging technical fabrics.

Unlike household detergents, these cleaners:

• Leave no residue

• Protect breathable membranes

• Prepare the fabric for reproofing

You can explore outdoor gear care products here:
👉 https://www.greatoutdoors.ie/collections/grangers

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Step 2: Restore the Water Repellent Finish

After cleaning, the next step is restoring the Durable Water Repellent (DWR) coating.

Reproofing products help the outer fabric regain its ability to repel rain and allow moisture to escape.

This process helps restore:

• Water beading on the surface

• Breathability

• Overall jacket performance

Regular reproofing can significantly extend the life of your waterproof gear.

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How to Tell If Your Jacket Needs Reproofing

A simple test can reveal whether your jacket needs care.

Sprinkle or spray a little water on the surface of the fabric.

If the water:

• Beads up and rolls off → The DWR is working

• Soaks into the fabric → The jacket likely needs cleaning and reproofing

Performing this quick check every so often can help keep your gear performing properly.

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How Often Should You Treat Your Jacket?

There’s no strict rule, but most outdoor jackets benefit from cleaning and reproofing when:

• Water stops beading on the surface

• The jacket looks dirty

• Breathability seems reduced

Regular maintenance helps your jacket continue to perform well in wet weather.

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Why Proper Care Matters

Outdoor jackets are designed to handle tough conditions, but they rely on proper maintenance to perform at their best.

Without regular cleaning and reproofing:

• Waterproof performance may decline

• Breathability can drop

• The outer fabric may become saturated in rain

Using specialist gear care products — like those from Grangers — helps restore performance and extend the life of your outdoor clothing.

You can browse Grangers gear care products here:
👉 https://www.greatoutdoors.ie/collections/grangers

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Frequently Asked Questions

Does wet-out mean my jacket is no longer waterproof?

Not necessarily. In most cases, the waterproof membrane still works. The outer fabric simply needs cleaning and reproofing.

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Why does my jacket feel wet inside during rain?

When wet-out occurs, breathability drops and sweat becomes trapped inside the jacket, creating a damp feeling.

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Can washing fix wet-out?

Yes, often it can. Cleaning the jacket with a specialist cleaner and applying a reproofing treatment usually restores water repellency.

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Should I avoid regular laundry detergent?

Yes. Household detergents can leave residues that affect waterproof coatings and breathable membranes. Find out more about why you should avoid these chemicals on outdoor gear in our blog here: https://www.greatoutdoors.ie/blogs/expert-advice/why-you-shouldn-t-wash-outdoor-gear-with-household-detergent