Quick answer
Most packable rain jackets leak because the durable water repellent (DWR) finish has worn off or the seams have failed. Clean the jacket, reapply a DWR treatment, and reseal any damaged seams to restore reliable water resistance.
Why DWR matters and when to replace it
DWR is a chemical coating that makes water bead up and roll off the outer fabric. Over time, dirt, oils, and repeated washing break down this coating, causing the jacket to 'wet out' and feel like it's leaking even though the membrane is intact.
If your jacket still beads water in some areas but soaks through in others, the DWR is unevenly worn. If water soaks in everywhere, it's time for a full reapplication. If water comes through at seams or zippers, you likely have a different issue—seam tape failure or a damaged waterproof membrane.
Seam and zipper trouble spots
Seams are the most common leak points on any rain jacket. The needle holes from stitching can allow water through unless they're sealed with seam tape. Over time, this tape can peel or crack, especially after frequent packing and washing.
Zippers are another weak spot. Even with a waterproof zipper, the surrounding fabric can absorb water if the DWR is gone. Check the inside of the jacket for wet spots along the seams and zipper flaps to pinpoint the source.
When to call it quits
If the jacket's inner lining is delaminating, the fabric is shredded, or the waterproof membrane is visibly damaged, repairs won't help. At that point, it's more cost-effective to replace the jacket than to keep patching it.
Also, if you've cleaned and reapplied DWR but the jacket still leaks heavily, the membrane itself may be compromised. In that case, consider a new packable rain jacket with a proven water-resistant shell.
Diagnose and fix your leaking jacket
- Symptom: Water soaks into the outer fabric and you feel dampness on your shoulders or arms. Check if water beads on the surface—if it doesn't, the DWR is worn.
- Likely cause: Worn DWR coating, dirty fabric, or damaged seam tape. Inspect seams and zippers for peeling tape or gaps.
- Corrective action: Wash the jacket with a technical cleaner, rinse thoroughly, then apply a DWR spray or wash-in treatment. For seam leaks, use a seam sealer product on the inside of the jacket. Always air-dry the jacket after treatment to activate the DWR.
- Stop or choose another option: If the inner lining is peeling, the fabric is torn, or water still soaks through after treatment, the waterproof membrane is likely compromised. Stop repairing and consider replacing the jacket.
Products that help
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Women's Packable Rain Jacket: This jacket features a water-resistant poly/nylon shell and a stow-away hood. A well-constructed water-resistant shell responds well to DWR reapplication, keeping you dry in light to moderate rain.
Women's Packable Rain Jacket
