How to Waterproof a Jacket

Water beading on waterproof jacket

How to Waterproof a Jacket: A Step-by-Step Guide to Restoring Your Outerwear’s Performance

Did you know that even high-end waterproof jackets can lose their repellency in just one season?

That pricey hiking shell or trusted raincoat might still look good, but if water no longer beads on the surface, it’s no longer keeping you dry. Over time, the durable water repellent (DWR) finish wears off, and performance takes a hit.

The good news? You don’t need to replace it. With the right spray-on waterproofing treatment, you can restore water resistance at home, save money, and extend the life of your outdoor gear. This guide shows you exactly how to reproof a waterproof jacket using Stormproof™ - the easiest, safest, and most effective way to bring it back to life.

Comparison of wetted out vs water-repellent jacket

Why Spray-On Waterproofing Is the Best Method

There are two main ways to reproof outerwear: spray-on and wash-in. While both aim to restore water repellency, spray-on is the superior option for most technical outdoor gear.

Spray-On Waterproofing

  • Targets the outer fabric only, where waterproofing is needed
  • Preserves breathability - essential for GORE-TEX®, eVent®, and similar membranes
  • Allows precision coverage on seams, shoulders, and cuffs
  • Compatible with nearly all outdoor and technical garments

Wash-In Waterproofing

  • Coats the entire garment, including linings
  • Can reduce breathability and affect insulation
  • Less control over where protection is applied
Spray-On vs Wash-In Water Repellent Comparison Chart Data based on published research, expert guidance, and comparative product testing for waterproof garment care.

How to Reproof a Waterproof Jacket Using Stormproof™ Spray

Step 1: Wash the Jacket

  • Close all zips and fasteners
  • Use a technical garment cleaner - avoid regular detergent
  • Skip fabric softener - it degrades waterproofing
  • Let the jacket dry until it’s just damp

Step 2: Apply Stormproof™

  • Shake the bottle well
  • Lay the jacket flat or hang it up
  • Spray evenly across the outer surface, about 15-20 cm away
  • Focus on high-wear areas like shoulders, elbows, cuffs, and seams
  • Dab off excess with a clean cloth after a few minutes

Note: You don’t need to soak the jacket - use Stormproof™ sparingly for optimal results.

Waterproofing a jacket with spray
Reproofing a GORE-TEX® jacket with Stormproof™

Step 3: Dry and Cure

  • If allowed by the garment label, tumble dry on low to bond the treatment
  • Otherwise, hang in a warm, ventilated area until fully dry

Why Choose Stormproof™ Over Other Sprays?

  • PFOS-free
  • Compatible with GORE-TEX®, eVent®, Sympatex®, and softshells
  • Dries clear and soft - no stiffness or residue
  • Made in the UK and field-tested in tough conditions
  • Long-lasting performance with excellent value
  • Trusted by outdoor professionals

Drying and Aftercare Tips

  • Always clean the garment before reproofing - dirt blocks absorption
  • Use low heat to cure the finish, if permitted by the label
  • Store gear in a cool, dry place when not in use
  • Reapply after every few months or following heavy use or washing

FAQs: Waterproofing Jackets with Stormproof™

Can I use Stormproof™ on GORE-TEX® jackets?
Yes. Stormproof™ is designed to work with breathable membranes like GORE-TEX® and eVent®.

How long does Stormproof™ last?
Expect to reapply every 12-18 months, depending on use and washing frequency. High wear areas may need reproofing more frequently.

Do I need to apply heat after spraying?
Yes - low tumble dry or a warm iron with a cloth barrier helps bond the DWR finish.

Can I use it on tents and boots?
Absolutely. Stormproof™ works on tents, boots, and even bags and softshells. As long as the fabric you are applying it to is at least somewhat absorbent and not silicone treated, it will work.

Conclusion: Choosing the Right Waterproofing Method

Both spray-on and wash-in waterproofing treatments can restore water repellency to your jacket, but they serve different needs. Wash-in products are convenient for treating large batches of gear quickly, and they may be suitable for non-technical items like fleece, softshells, or casual outerwear. However, they can reduce breathability and insulation performance in high-spec garments with membranes like GORE-TEX® or eVent®.

Spray-on waterproofers offer more precision, preserve fabric breathability, and are the recommended choice for most outdoor and technical clothing. If you need targeted performance without compromising comfort or function, spray-on is the better option overall.

Of all the products available, Stormproof™ Durable Water Repellant stands out. Its PFOA- and PFOS-free C6 fluorocarbon formula offers reliable protection, long-lasting performance, and is trusted by outdoor professionals. Whether you're hiking, commuting, or working outdoors, Stormproof™ is the most effective way to reproof your gear.

For more outdoor gear care advice, visit our Help section or follow Stormsure® on Instagram and Facebook.

GORE-TEX®, eVent®, Sympatex®, and Stormsure® are registered trademarks of their respective owners. Stormproof™ is a trademark of Stormsure Ltd.
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