How to Wash and Reproof a Waterproof Running Jacket

1. Check whether it needs cleaning, reproofing or repair

A waterproof running jacket can look tired long before it is worn out. Sweat, body oils and trail dirt build up around the collar, cuffs and back, while the outer fabric may stop shedding rain in droplets. A careful wash is often the best first step, rather than immediately buying a replacement.

Start by checking that your jacket is waterproof, not simply windproof or water-resistant. Look up the model if the label is unclear. Many waterproof jackets combine a waterproof layer with a durable water-repellent finish, often called DWR, on the outside. Reproofing refreshes that outer finish; it does not mend holes or restore a damaged waterproof layer.

Inspect the shoulders, hood, underarms and any areas rubbed by a running pack. Look inside for peeling seam tape, bubbling or flaking layers. These problems need repair advice rather than another dose of proofer. If you are assessing a second-hand jacket, ask for clear photographs of these areas before buying.

2. Prepare the jacket and washing machine

Read the garment’s care label and the manufacturer’s cleaning instructions first. Temperature, spin and drying recommendations vary, so avoid copying the settings you use for ordinary running tops. Empty every pocket, brush away loose mud and follow the instructions for fastening zips and securing adjustable tabs.

Choose a cleaner approved for waterproof technical clothing, unless the manufacturer specifies something else. Avoid fabric conditioner, bleach and stain treatments that are not explicitly suitable. Check the detergent drawer for leftover conditioner or powder and clean it out; if necessary, run a rinse cycle before washing the jacket.

Treat particularly grubby cuffs and collars only as directed by the cleaner and garment instructions. Gentle attention is better than hard scrubbing, which can damage lightweight fabrics. Leave enough room in the drum for the jacket to move freely.

3. Wash gently and dry as directed

Use the recommended dose of cleaner and the wash programme permitted by the label. More product is not automatically better: residue can interfere with performance. Follow any instructions about extra rinsing, especially if the jacket still feels soapy after the wash.

Dry the jacket exactly as its care instructions allow. Some waterproof fabrics benefit from gentle tumble-dryer heat to reactivate the existing water-repellent finish, but others have different requirements. Never assume that a hot dryer, radiator or iron is suitable. If tumble drying is prohibited, follow the stated alternative.

Once the jacket is completely dry, sprinkle a little clean water onto several outer panels. Droplets that bead and roll away suggest the finish is working. If water spreads into the surface and darkens it instead, the outer fabric is wetting out and may need reproofing.

4. Reproof only when it is needed

Choose a proofer compatible with your jacket and follow both sets of instructions. Spray-on treatments let you target the outside, including high-wear shoulders and sleeves. Wash-in products can suit some garments, but are not appropriate for every construction or lining.

Apply the treatment evenly, using the specified amount and working in a suitably ventilated space. Some products go onto damp fabric; others have different requirements. Wipe away excess if instructed, then complete the recommended drying or curing process before testing again.

Remember that feeling damp inside does not necessarily mean rain is leaking through. Sweat can accumulate during hard efforts, particularly in humid conditions. Use ventilation where available and adjust your layers, rather than repeatedly reproofing a jacket that already beads water.

5. Store it properly or pass it on honestly

After wet runs, unpack your jacket promptly and let it dry fully before storing it somewhere cool and dry. Avoid leaving it compressed in a muddy kit bag. Check the cuffs, zip and seam tape periodically so small problems do not go unnoticed.

If you decide to sell, photograph the inside and outside and describe any repairs, peeling tape or remaining wetting-out patches. Mention the cleaning and reproofing products used without promising like-new waterproofing. Selling on HobbyTrade is free, with no listing fees and no seller commission, and Buy now payments are covered by Buyer Protection.