How to Reproof a Gore-Tex Berghaus Jacket
Restoring durable water repellency (DWR) on a Gore-Tex jacket keeps the face fabric from "wetting out"—which blocks breathability. Follow this safe, effective process:
What You Need
- Technical gear cleaner (e.g., Nikwax Tech Wash, Grangers Performance Wash) — no household detergent, fabric softener, bleach, or powder.
- Wash-in or spray-on DWR treatment (e.g., Nikwax TX.Direct, Grangers Clothing Repel).
- Front-loading washing machine (or top-loader without agitator).
- Tumble dryer (low heat) or drying rack.
Step-by-Step
- Clean: Zip all zippers, close Velcro. Wash on gentle cycle, 30–40°C (86–104°F), with technical cleaner. Extra rinse cycle.
- Dry (first pass): Tumble dry low/medium 20–30 min, or air dry fully. Heat reactivates existing DWR.
- Apply DWR:
- Wash-in: Add DWR to detergent drawer; run another gentle cycle (cold/30°C).
- Spray-on: Hang damp jacket; spray evenly 15 cm away, focusing on shoulders, hood, forearms. Wipe excess.
- Heat activate: Tumble dry low 20–30 min (best) or iron on low (no steam, use pressing cloth). Heat cross-links the polymer.
- Test: Flick water on shoulders—should bead and roll off.
Key Tips
- Never use fabric softener — it coats fibers, kills DWR and breathability.
- Wash only when dirty or wetting out — overwashing wears the membrane.
- Store hung, not compressed.
- For heavy abrasion areas (pack straps), spray-on gives targeted coverage.
Reproof annually or when water stops beading. A well-maintained Gore-Tex shell lasts decades.
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