The Sunrise Post

A used rain jacket that lets water soak through isn't broken - it just needs a reset. If you picked up a used columbia or any other shell jacket, the DWR (durable water repellent) finish is probably worn out.  The good news is that with the right wash and a quick reproof, most jackets can bead water like new. Here's exactly how to do it. What Actually Makes a Rain Jacket Stop Working? The outer fabric loses its water-repellent coating over time, not the waterproof membrane underneath.  DWR is a chemical treatment applied to the outer shell during manufacturing, and it breaks down with sweat, dirt, skin oils, and regular washing. When it degrades, water no longer beads and rolls off - it soaks into the fabric instead, a process called "wetting out." This makes the jacket feel heavy and cold, even though the inner membrane may still be fully intact. A 2019 study published in Environmental Science & Technology found that most DWR coatings are fluoropolymer-based and...

Finding that perfect used Columbia jacket at a thrift store feels like striking gold, but what happens when rain starts soaking through instead of beading up? The magic behind weather-resistant clothing is a technology called Durable Water Repellent (DWR), and it wears off over time. Luckily, you can bring back that protective coating with some simple steps at home. What is DWR and Why Does It Wear Off? DWR coating is a thin chemical layer applied to fabrics that makes water bead up and roll off instead of soaking through. This coating works alongside the waterproof membrane to keep you dry during outdoor activities. Over time, several factors cause DWR to degrade: Regular washing and detergent exposure Body oils and dirt buildup General wear and abrasion UV exposure from sunlight When your previously-owned weather-resistant garment starts "wetting out" (absorbing water rather than repelling it), it's time to restore the DWR coating. How to Tell When DWR Needs Restoratio...