I have a Showers Pass Portland Rain Jacket. The manufacturer recommends using Nikwax TX Direct Spray On to maintain waterproofing properties. How much should I apply to the jacket? How do I know if it's too much or too little?
Relevant Links:
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1I would follow the directions printed on the bottle (which will usually say "don't saturate" or "thoroughly saturate and let dry" depending on the product.) – Lost Sep 23 '12 at 6:11
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Unfortunately the bottle, nor the website for Nikwax mentions any measure of quantity or method of application. – Benzo Sep 23 '12 at 14:21
From the Nikwax link you provide:
For best results remove all non-washable parts and always clean item(s) first with Nikwax Tech Wash®. No need to dry item(s) before waterproofing.
- Protect working surface and lay clean wet fastened garment flat.
- Hold bottle 15 cm/6 inches away from garment.
- Apply evenly to outside of fabric.
- Wait for 2 minutes. Remove any surplus product with a damp cloth.
- Check carefully to ensure no areas have been missed.
- After several minutes check for and remove any surplus product with a damp cloth.
Sounds to me like you should spray in on evenly almost to the point of saturation, and remove any excess... (excess is usually the result of over-saturation).
I suspect there is not any hard-and-fast rule, otherwise I imagine they would be more specific.
I'm a fan of more-is-better approach (... to life).
If you use too little, you'll probably notice next time you wear the thing.
