Why washing is maintenance, not risk
Gore states that body fats, sunscreen and residues can impair performance and cause seam tape to peel, and recommends washing as needed. This supports label-permitted cleaning, not a claim that any washing method is harmless.
A jacket that has stopped beading water usually needs a wash before it needs anything else: accumulated contamination is what kills the finish. Patagonia's US guide even publishes indicative intervals — after roughly 7–10 wears or a long trip for non-PFAS jackets, versus typically 30 uses for PFAS-era ones — though these are Patagonia's recommendations, not universal rules.
Where the manufacturers agree
The cited guides overlap, but are not interchangeable. Gore allows a small amount of liquid detergent and specifies rinsing twice; Patagonia permits mild liquid detergent and recommends specialist products; Arc’teryx and Rab recommend technical wash. Check the actual garment’s label before choosing products, closing fastenings or setting the wash and drying programme.
- Gore: machine wash at 40°C with a small amount of liquid detergent, rinse twice, minimal spinning; warm gentle tumble or line dry, then 20 minutes' tumble once dry to reactivate the DWR.
- Patagonia: mild liquid detergent, preferably a specialist wash; warm water (no numeric temperature given in the Australian guide); low-heat drying for at least half an hour, or air dry followed by a protected low iron.
- Arc'teryx (ReBIRD guide): technical detergent at 40°C, regular cycle, double rinse; low-to-medium tumble for 40–50 minutes.
- Rab: technical wash per the garment label; low tumble dry for 20–30 minutes where the label permits.
Where they differ — and why the label wins
Instructions differ by garment and source: the examples below are not universal settings. Gore and Arc’teryx cite 40°C in the reviewed guidance, while Patagonia’s Australian guide says warm. Follow the exact garment label rather than transferring one brand’s instructions to another.
The same applies to heat. Tumble drying reactivates a conventional DWR finish — but Gore's own instructions forbid tumble drying, ironing and any DWR application on SHAKEDRY-type persistent-beading garments, which have no textile outer layer. A 'universal waterproof jacket washing guide' that ignores these exceptions is not simpler; it is wrong for some jackets.