How to clean DWR jackets without ruining waterproofness?

Keeping your DWR (Durable Water Repellent) treated jackets clean is crucial for their performance, but doing it incorrectly can strip away their protective coating. DWR is what makes water bead up and roll off your jacket, preventing the fabric from saturating and keeping you dry. This guide will walk you through the proper steps to clean your DWR jacket effectively without compromising its waterproof capabilities.

Understanding DWR and Its Importance

DWR is a polymeric coating applied to the outer fabric of waterproof and water-resistant garments. It’s not the same as a waterproof membrane (like Gore-Tex or eVent), but rather complements it by preventing the outer fabric from ‘wetting out’ – becoming saturated with water. When the outer fabric becomes saturated, it reduces breathability and can make the jacket feel clammy, even if the internal waterproof membrane is still doing its job.

Over time, dirt, body oils, sweat, and residues from detergents can contaminate the DWR, causing it to lose its effectiveness. Regular cleaning, using the right methods, can revitalize the DWR and maintain the jacket’s optimal performance.

Signs Your DWR Needs Attention

The most obvious sign that your jacket’s DWR is failing is when water no longer beads up and rolls off the fabric. Instead, the water will soak into the outer layer, making the fabric look darker and feel heavier. This ‘wetting out’ phenomenon indicates it’s time for a thorough cleaning and potentially a reapplication of DWR.

Preparation is Key

Before you begin washing, take a few preparatory steps to ensure the best results:

• Empty Pockets: Remove everything from all pockets.
• Zip Up: Close all zippers (main, pockets, vents) and fasten any flaps or straps.
• Brush Off Loose Dirt: Use a soft brush to gently remove any loose dirt or mud from the jacket’s surface.
• Check Care Label: Always consult your jacket’s care label for specific instructions, as some manufacturers may have unique recommendations.

The Washing Process: Gentle and Specific

Choosing the Right Detergent

This is perhaps the most critical step. Regular laundry detergents contain surfactants and additives (like fabric softeners, brighteners, and perfumes) that can strip away DWR and leave residues that attract water. Instead, use a specialized technical wash designed for waterproof breathable fabrics (e.g., Nikwax Tech Wash, Granger’s Performance Wash).

Machine Washing

Most DWR jackets can be machine washed:

1. Load the Washer: Place one or two jackets in a front-loading washing machine. Top-loaders with agitators can be too harsh; if you must use one, place the jacket in a mesh bag to protect it.
2. Add Technical Wash: Dispense the recommended amount of technical wash into the detergent dispenser.
3. Select Cycle: Choose a gentle cycle (e.g., ‘delicate’ or ‘hand wash’) with cool or warm water (not hot).
4. Rinse Thoroughly: Ensure the machine completes a thorough rinse cycle to remove all detergent residue. You might even run an extra rinse cycle.

Hand Washing (for very delicate items)

If your jacket is extremely delicate or if you don’t have access to a suitable washing machine:

1. Fill a clean basin or tub with cool or warm water.
2. Add the recommended amount of technical wash.
3. Submerge the jacket and gently agitate it.
4. Allow it to soak for 5-10 minutes.
5. Rinse thoroughly under running water until all suds are gone.

Drying and Reactivating DWR

After washing, the drying process is crucial for reactivating the DWR coating:

• Tumble Dry on Low Heat: Most DWR treatments are heat-activated. Place the jacket in a tumble dryer on a low heat setting. The gentle heat helps to restore the DWR’s water-repellent properties.
• Check Regularly: Remove the jacket once it’s dry. Over-drying or using high heat can damage the fabric and DWR.
• Air Drying (with caution): If you prefer to air dry, hang the jacket in a well-ventilated area away from direct sunlight. Once dry, you may need to briefly tumble dry it on low heat (15-20 minutes) or gently iron it on a very low setting with a towel placed between the iron and the jacket to reactivate the DWR.

When to Reapply DWR

Even with proper cleaning and heat reactivation, DWR will eventually wear off due to abrasion and extended use. If your jacket continues to ‘wet out’ after cleaning and drying, it’s time to reapply DWR.

You can purchase DWR reapplication products, which come in two main forms:

• Spray-on: Applied to the wet or dry exterior of the garment. This is ideal for maintaining breathability, as it only treats the outer fabric.
• Wash-in: Added to the washing machine during a rinse cycle. This treats the entire garment, including the lining, which can sometimes reduce breathability for garments with waterproof membranes.

Application Steps (for spray-on)

1. Ensure the jacket is clean (preferably freshly washed and damp).
2. Hang the jacket on a hanger.
3. Evenly spray the DWR treatment over the entire outer surface, ensuring full coverage.
4. Wipe off any excess or drips.
5. Follow the product’s instructions for drying and heat activation (usually low tumble dry or gentle ironing).

Tips for Extending DWR Life

• Wash Only When Needed: Avoid over-washing, but don’t let dirt build up.
• Store Properly: Hang your jacket in a cool, dry place.
• Avoid Contaminants: Try to keep your jacket away from bug sprays, sunscreens, and strong chemicals that can degrade DWR.

Conclusion

Cleaning your DWR jacket properly is a simple yet vital maintenance task that will significantly extend its lifespan and maintain its performance. By using specialized cleaners, gentle washing techniques, and heat reactivation, you can ensure your outdoor gear continues to protect you from the elements, adventure after adventure. Don’t let a ‘wetting out’ jacket spoil your next outing – give it the care it deserves!