How to Reapply DWR and Revive Waterproofing on Your Outdoor Gear

How to Reapply DWR and Revive Waterproofing on Your Outdoor Gear: A Comprehensive Guide

There’s nothing quite like the feeling of stepping into the wilderness, fully confident that your gear will protect you from the elements. That confidence often comes from your outdoor apparel and equipment having a Durable Water Repellent (DWR) coating. DWR is what causes water to bead up and roll off your jacket, pants, or tent, keeping you dry and comfortable. But over time, this magical coating wears off, leaving you exposed to the dampness. Don't throw out your beloved gear just yet! Reapplying DWR is a simple and effective way to revive its waterproofing and extend its life. As an affiliate marketer, I’m here to guide you through the process, helping you keep your adventures dry and enjoyable!

Understanding DWR: Why it's Essential and Why it Fails

DWR is a polymeric coating applied to the outer fabric of waterproof-breathable garments and gear. Its primary function is to prevent the fabric from "wetting out" – becoming saturated with water. When fabric wets out, it compromises the garment's breathability, making you feel clammy and cold, even if the internal waterproof membrane is still doing its job. Think of it like a clogged drain; the water might not get through, but it's pooling on the surface.

• Why it's Essential: DWR helps waterproof-breathable membranes (like Gore-Tex or eVent) function effectively by allowing perspiration to escape while preventing external water from soaking in. Without DWR, breathability significantly diminishes.
• Why it Fails: Several factors contribute to DWR degradation:
  • Dirt and Grime: Oils, dirt, and sweat can clog the DWR finish, preventing water from beading.
  • Abrasion: Friction from backpacks, climbing harnesses, or even just regular wear and tear can rub off the DWR coating.
  • Washing: Regular washing, especially with conventional detergents, can strip away the DWR.
  • Heat Exposure: High heat (like from tumble drying on high) can sometimes damage the DWR, though moderate heat often helps reactivate it.
  • Chemicals: Insect repellents, sunscreens, and other chemicals can break down the DWR.

Signs Your DWR Needs Reapplying

How do you know when it's time to refresh your gear's waterproofing?

• Fabric "Wets Out": Instead of water beading up and rolling off, it soaks into the outer fabric, making it look dark and heavy.
• Clammy Feeling: Even if you're not getting soaked through, you might feel a clammy sensation inside your jacket or pants because the lack of DWR is hindering breathability.
• Reduced Performance: You notice your gear isn't performing as well in wet conditions as it used to.

Preparation is Key: Thorough Cleaning First!

Before you even think about reapplying DWR, you must clean your outdoor gear. Applying DWR to dirty fabric is like painting over a dusty wall – it won't stick properly, and the results will be poor. Cleaning removes the dirt, oils, and residues that inhibit DWR performance, preparing the fabric for a fresh application.

• Use a Technical Cleaner: Avoid conventional laundry detergents, as they often contain surfectants, brighteners, and softeners that can leave residues and strip DWR. Instead, use a specialized technical cleaner designed for waterproof-breathable fabrics.
• Follow Washing Instructions: Always check your garment's care label. Generally, you'll want to zip all zippers, close all flaps, and loosen any drawstrings. Wash in a front-loading machine if possible, as agitators in top-loading machines can be harsh on gear.
• Rinse Thoroughly: Run an extra rinse cycle to ensure all soap residue is gone.

Choosing the Right DWR Product: Wash-In vs. Spray-On

Once your gear is clean, it's time to choose your DWR reapplication method. There are two primary types:

• Wash-In DWR: These products are added to your washing machine during a wash cycle. They treat the entire garment, both inside and out. Wash-in DWR is convenient for items where you want overall coverage, but it can also treat areas like liners that don't need DWR, potentially impacting breathability in those specific areas.
• Spray-On DWR: These are applied directly to the outer surface of the fabric. Spray-on DWR is excellent for targeted application, allowing you to treat only the exterior of your garment or specific high-wear areas. It's often preferred for waterproof-breathable garments to maintain the inner lining's wicking properties.

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Step-by-Step DWR Reapplication Guide

Method 1: Wash-In DWR Application

This method is ideal for items like rain pants, tents, or gear where full saturation isn't a concern.

• Load the Machine: Place your freshly cleaned, damp gear (usually 1-2 items at a time) into your washing machine.
• Add DWR: Pour the recommended amount of wash-in DWR product into the detergent dispenser.
• Run Cycle: Select a gentle cycle (e.g., permanent press, synthetics) with cool or warm water. Do not use hot water unless specifically instructed by the product.
• No Spin: Some products recommend skipping the spin cycle to ensure better absorption. Check product instructions.
• Remove and Dry: Once the cycle is complete, remove your gear.

Method 2: Spray-On DWR Application

This is often preferred for jackets and other apparel where you want to maintain inner breathability.

• Prepare the Surface: Lay your clean, damp (or dry, depending on product instructions) garment flat or hang it on a hanger in a well-ventilated area.
• Spray Evenly: Hold the spray bottle 6-12 inches from the fabric and spray evenly, ensuring full coverage. Don't oversaturate, but make sure all areas that need DWR are treated.
• Wipe Excess: Immediately wipe off any drips or excess DWR with a clean cloth, especially from zippers or non-fabric components.
• Air Dry or Tumble Dry: Proceed to the activation step.

Activating the DWR: Heat is Your Friend (Usually!)

Many DWR products require heat to "cure" and bond properly to the fabric. This step is crucial for optimal performance.

• Check Instructions: Always refer to the DWR product's instructions and your garment's care label.
• Tumble Dry: The most common method is to tumble dry on a low to medium heat setting for 20-30 minutes. The heat helps the DWR polymer chains stand up, enhancing their water-shedding capabilities.
• Ironing: If tumble drying isn't an option or is not recommended for your gear, you can carefully iron the garment on a low, synthetic setting, placing a towel between the iron and the fabric.
• Air Dry: Some newer DWR formulas are air-cure and do not require heat activation. Always confirm with the product's guidelines.

Maintenance Tips to Prolong DWR Life

Reapplication isn't a one-time fix. Proper care will help your DWR last longer.

• Wash Regularly (with care): Don't fear washing! Dirt and oils are DWR's worst enemy. Wash your gear with technical cleaners as needed.
• Avoid Fabric Softeners and Bleach: These can destroy DWR and damage waterproof membranes.
• Spot Clean: For small areas of dirt, spot clean rather than a full wash.
• Store Properly: Store clean, dry gear in a cool, dry place. Avoid compressing it tightly for long periods.
• Reactivate with Heat: Often, you don't need a full reapplication. If water starts to soak in slightly, a quick tumble dry on low heat can sometimes reactivate the existing DWR.

Conclusion: Keep Your Gear Performing Like New!

Reapplying DWR to your outdoor gear is a simple yet powerful way to maintain its performance, extend its lifespan, and ensure you stay dry and comfortable on all your adventures. By following these steps – thorough cleaning, choosing the right product, careful application, and heat activation – you can revive your waterproofing and head out with confidence, no matter the forecast. Don't let a little wet weather dampen your spirits; give your gear the refresh it deserves!