How to Reproof a Waterproof Jacket

If you have a favourite waterproof jacket and you find that rainwater is not beading on the surface like it used to, but is saturating the material instead, it might be worth re-waterproofing it. First of all, you should find out how to wash a waterproof jacket, as yours may simply be dirty, but if it still fails to repel moisture, it’s a definite truth that you need to resort to reproofing.

Wash-In Method


Once your jacket has been cleaned, you should clean out your washing machine’s detergent tray. This is a similar step for washing, but you’ll want to clear out any remnants of your washing product.

Get yourself some wash-in waterproof – we stock this in our specialised cleaning and proofing range.  Follow the instructions for volume and temperature settings before setting the washer.


Let the cycle run with the waterproof, and once completed, allow the cycle to repeat and dry out the jacket. Waterproof washing liquid and waterproof washing powder activates with heat so if your product allows you to tumble dry or wash at 40°C, the heat will help activate the coating.

Once finished, you can hang the jacket to dry out or if you use a tumble dryer, you will be good to go. Test run the new coating when you get the chance and if the process works correctly, you’ll find that water will bead on the surface once again.

How Do You Spray A Waterproof Jacket?

  1. Take your waterproofing spray
  2. Hang your waterproof jacket out on a washing line to allow for even spraying
  3. Spray the product evenly on the outside of the jacket from about 5-7 inches away
  4. Double-check the jacket has been evenly covered to ensure no areas have been missed
  5. Wipe off any excess spray with a damp cloth or clean microfibre towel
  6. Sit back, and allow the jacket to dry naturally

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