The Truth About Waterproofing: Can Your Horse Blanket Really Stay Dry Forever?

Understanding Waterproofing vs. Water Resistance

You pull your horse’s blanket out of storage, expecting it to repel water like the day you bought it, only to find that it’s soaking through. Wasn’t this supposed to be waterproof?

Let’s clear up a common myth: no horse blanket is 100% waterproof forever. Despite what manufacturers claim, all waterproof fabrics eventually allow water to seep through. The real question isn’t if water will get in...it’s when and how you can slow the process down.

In this guide, we’ll break down how waterproofing works, why it wears off, and what you can do to extend the life of your horse’s blanket while keeping your horse dry and comfortable.

Why Do Horse Blankets Lose Their Waterproofing?

Understanding why your horse’s blanket loses its waterproofing is the first step in knowing how to restore it effectively. Here are the key reasons:

1. Dirt and Grime Build-Up

Over time, blankets collect layers of mud, sweat, dust… all the fun stuff that comes with actual horse life. And it’s not just about how they look. That buildup creates the perfect environment for bacteria and can clog the waterproofing, so instead of shedding water, the fabric starts holding onto it.

2. Repeated Washing

Washing matters, but how you wash matters even more. Using the wrong detergent or over-washing can strip the blanket’s waterproofing faster than people realize. Harsh soaps and high heat break down that protective layer, leaving the blanket more likely to leak over time.

3. General Wear and Tear

Blankets don’t live easy lives. Between rolling, rubbing, playing, and the occasional “let’s see if I can grab my buddy’s blanket,” they take a beating. Over time, all that movement and friction wears down the waterproof layer, even if everything still looks fine on the outside.

4. Exposure to the Elements

Sun, wind, rain...it all adds up. UV rays slowly weaken the fabric, and constant exposure to moisture breaks down waterproof coatings. Even the best blankets won’t hold up forever if they’re constantly out in the elements.

💡 Pro Tip: A little prevention goes a long way! Brushing off dirt and spot-cleaning regularly can help maintain waterproofing longer.

How to Test If Your Horse Blanket is Still Waterproof

Before re-waterproofing, it’s important to determine if your horse blanket actually needs treatment. Not all blankets that look damp are failing, sometimes, it's just condensation or surface moisture. Here’s how to test:

1. The Water Bead Test

• Lay your blanket on a flat surface.
• Pour a small amount of water onto the fabric.
• Watch how the water reacts, does it bead up and roll off, or does it soak in?
  • If the water soaks in, it’s time to reapply waterproofing.

2. The Soak Test

• Drape a dry blanket over a fence or sawhorse.
• Use a hose to mimic rainfall, allowing water to fall gently onto the fabric.
• After a few minutes, check the underside, if moisture is seeping through, the waterproof barrier has worn down. *Spraying directly at the fabric can push water through.

💡 Pro Tip: Some blankets naturally absorb a little surface moisture but don’t actually leak through. Always check if the inside remains dry before assuming waterproofing has failed.

Why Do Horse Blankets Lose Their Waterproofing?

Waterproofing on horse blankets doesn’t last forever. It gradually wears away due to exposure, washing, and general use. Here’s why:

1. Frequent Washing

Every wash, especially with harsh detergents or hot water, can strip away the waterproof coating. Using a gentle, blanket-safe wash helps prolong the life of factory applied waterproofing.

2. Normal Wear and Tear

Daily use, rolling, rubbing, and friction all contribute to the breakdown of waterproofing over time. Areas with the most movement—like the shoulders and back—often wear out first.

3. Harsh Weather Conditions

Sun exposure, heavy rain, snow, and mud can degrade the waterproof coating, making it less effective over time.

4. Dirt and Sweat Build-Up

Believe it or not, dirt and sweat can interfere with waterproofing. A grimy blanket can absorb more moisture, preventing water from beading and rolling off properly.

💡 Pro Tip: Regular maintenance, like brushing off dirt and spot cleaning, helps extend your blanket’s waterproofing and overall lifespan!

Signs Your Horse Blanket Needs Re-Waterproofing

Waterproofing doesn’t just vanish overnight, it fades gradually. Knowing when to reapply it can prevent your horse from getting soaked in wet weather. Here’s how to tell if your blanket needs a refresh:

1. Water Stops Beading Up

A properly waterproofed blanket causes water to bead up and roll off the surface. If you notice water soaking into the fabric instead of repelling, it’s time for a treatment.

2. Dark Patches After Rain

If certain areas of the blanket appear darker after getting wet, the waterproofing has worn thin in those spots, allowing moisture to seep through.

3. Dampness Underneath the Blanket

After a rainy turnout session, check your horse’s coat. If it feels damp, the blanket isn’t doing its job properly anymore.

4. Fabric Feels Stiff or Worn

Over time, waterproof coatings degrade, making the fabric feel stiffer or rougher. This can indicate a loss of flexibility and water resistance.

💡 Pro Tip: Testing your blanket by spraying it with a hose, may apply too much force and essentially push water through the blanket. It may not be a reliable way to test water repellency of a blanket. 

How to Reapply Waterproofing to Your Horse Blanket

Reapplying waterproofing isn’t as complicated as it sounds, but it’s essential to do it properly. The goal is to restore water resistance without damaging the fabric or compromising breathability. Here’s how:

Step 1: Clean Your Blanket First

Before applying any waterproofing treatment, ensure the blanket is thoroughly clean. Use a detergent-free, gentle wash like Blanket Safe to avoid stripping the fabric. Let the blanket air dry completely.

Step 2: Choose the Right Waterproofing Treatment

There are two primary options for re-waterproofing your horse blanket:

• Spray-on Treatments: These are easy to apply and provide a quick fix. They’re perfect for spot treatments or areas where the waterproofing has worn off.
• Wash-in Treatments: These provide an even coat of waterproofing across the entire blanket. They are applied during the washing process, making them ideal for blankets that need a thorough re-coat. However, these can often be challenging to use appropriately. Sometimes the wash and spin cycle will work too well...and spin the product right out of the blanket you're trying to treat.

Step 3: Apply the Treatment

Follow the instructions on the waterproofing product. For spray-on treatments, hold about 6-8 inches from the fabric and apply a light, even coat. For wash-in treatments, simply follow the product’s guidance on how to add it to the washing machine.

Step 4: Allow the Blanket to Dry

After applying the treatment, let your blanket dry completely before using it. This ensures the waterproofing fully bonds with the fabric and offers maximum protection.

💡 Pro Tip: Always apply waterproofing treatments to a clean, dry blanket to ensure the best results.

Common Myths About Waterproofing Horse Blankets

It’s easy to get caught up in myths and misconceptions about waterproofing, especially with so many products claiming to offer 100% waterproofing. But let’s set the record straight, no fabric is completely waterproof forever. Here’s the truth behind some of the most common myths:

Myth #1: Waterproofing Is Permanent

Fact: Over time, all waterproof treatments will wear off. Whether it’s from exposure to the elements, washing, or general wear and tear, your blanket’s waterproofing will eventually degrade. While reapplication can help extend its effectiveness, fabric will never stay 100% waterproof forever.

Myth #2: Waterproof Fabrics Never Let Water Through

Fact: While waterproof fabrics are designed to shed water, they’re not impervious to it. Eventually, water will penetrate if the waterproofing has worn down or if the fabric is exposed to prolonged water exposure. This is why it’s important to reapply waterproofing regularly, especially after washing or heavy use.

Myth #3: Waterproof Blankets Don’t Need to Breathe

Fact: Waterproof doesn’t mean airproof! For a blanket to be effective, it needs to breathe as well as repel water. Overly water-resistant fabrics that lack breathability can trap moisture inside, leading to discomfort and potential skin issues for your horse. Always choose breathable fabrics with quality waterproofing.

Myth #4: Waterproof Coatings Don’t Affect Blanket Durability

Fact: Some waterproof treatments can break down fabric fibers or compromise the durability of the blanket. That’s why it’s crucial to use gentle, horse-safe waterproofing products and apply them correctly. Treat your blanket with care, and it’ll last longer while still performing as it should.

💡 Pro Tip: Don't fall for the “forever waterproof” claims. Be realistic about the lifespan of your blanket's waterproofing and keep it maintained for long-lasting protection.

Keep Your Horse's Blanket Protected...But Know Its Limits

Waterproofing is a great feature in a horse blanket, but it’s not forever. No fabric stays 100% waterproof, no matter what the label says. Over time, even the best blankets are going to lose that water resistance.

That’s where maintenance comes in. Washing them properly, reapplying waterproofing when needed, and just handling them with a little care can go a long way in keeping them working like they should.

But here’s the part a lot of people don’t realize, there are different types of waterproofing, and once a blanket is too far gone, there’s only so much you can bring back. At a certain point, no product is going to magically make it perform like it did when it was new.

When you understand those limits (and let go of some of the common myths), it makes it a lot easier to make good decisions about your blanket care. And in the long run, that’s what keeps your investment lasting longer...keeping your horse dry, comfortable, and your blankets in solid working shape for as long as they realistically can be.

Protect Your Horse’s Blanket with Blanket Safe

Don't let the elements wear down your horse’s blanket! Try Blanket Safe, the safest detergent-free wash designed to preserve waterproofing while providing gentle cleaning for your horse’s gear.

➡️ Shop Blanket Safe Now – Extend the life of your horse’s blanket and protect it from water damage today!

Note from the Founder

Hey there my fellow equestrian enthusiast,

As a horse owner and blanket enthusiast, I know how much you rely on your horse's blanket to stay dry and comfortable. While waterproofing treatments can work wonders, it’s important to remember that no fabric is 100% waterproof forever. That’s why it’s crucial to maintain your blankets properly and manage expectations. Waterproofing is about making your blanket last longer, not about a permanent shield against water. With the right care, your blankets will continue to protect your horse for seasons to come!

Happy washing and 'proofing,

Laura- Blanket Safe Founder

 

Coming Up Next: How to Wash a Fleece-Lined or Wool Horse Blanket Without Damaging It

Fleece-lined and wool horse blankets require special care to maintain their warmth and softness. In our next blog post, we’ll walk you through the best cleaning methods and tips for washing these delicate blankets without causing any damage. Stay tuned to keep your gear in top shape! >>Check It Out Here!<<