HOW TO CARE FOR DWR PRODUCTS
Even if you've done your research, and have bought the best rain pants for hiking, or that expensive Gore-Tex jacket you'll still need a little bit of TLC to keep your outdoor gear in top shape for the long run. This is never more true than in the case of products with a DWR finish, which of all items in out backcountry kit are liable to deterioration with time and frequent use but can be restored to factory-like efficiency with just a minimal outlay of attention and effort.
In this article, we’ll show you how it’s done with a short, practical guide on to how to get the most out of your DWR product.
The water resistance in DWR products can deteriorate and lose effectiveness with time owing to repeated washing, abrasion, weather exposure, and contamination by things like dirt, grease, and sweat.
To check if the effectiveness of your DWR product has declined, simply spray or pour a few drops of water on its surface at various points. If the water beads up and rolls off, or drops off after a gentle shake, then your DWR coating is healthy and not in need of reactivation or restoration. If, however, the water spreads on the surface and darkens the material, then it’s treatment time…
A number of measures can be taken to reduce the deterioration of a DWR coating and perk up its water-repellent properties:
Many hikers are apt to think that washing a breathable waterproof fabric product a will somehow damage it. In reality, regular washing of your waterproof jacket is the single most important factor in keeping the garment healthy and maintaining DWR performance.
To wash your DWR product, follow these instructions:
While the above measures (tumble drying and washing) are preventative in nature and can be used to slow down the deterioration of a DWR coating’s effectiveness, after a number of washes you may notice that washing alone is not enough to revive the water repellency of your jacket. If this is the case, you most likely need to take the more pro-active measure of re-proofing your garment.
Reproofing is a simple process that restores the durable water repellency in your jacket as closely as possible to its factory levels of waterproofing and is fundamental to the longevity of your jacket’s effectiveness. How often you need to re-proof your jacket will depend on how regularly you use it and how often you wash it. A ballpark figure that can be applied to most products is to reproof every 15-20 washes.
To reproof your jacket with a wash-in treatment, use the following instructions:
Reproofing your DWR garment with a spray-on treatment is a more “time-efficient” option that produces similar results to using a wash-in product. To do so, wash your garment as instructed above, leave to dry, and then cover it thoroughly with the spray, taking care not to miss any portion of the material (as seen in the video above).
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Kieran James Cunningham is a climber, mountaineer and writer based in the Italian Alps. He’s climbed a handful of 6000ers in the Himalayas, 4000ers in the Alps and loves nothing more than a good long-distance wander in the wilderness. He climbs when he should be writing, writes when he should be sleeping, has fun always.