GORE-TEX® garments are made of a nylon outer fabric that has been laminated to a GORE-TEX® membrane. This nylon outer fabric is treated at the mill with durable water repellency, called DWR. DWR is a substance like Tectron® or Scotchguard®, only it is much longer lasting. The GORE-TEX® membrane is what keeps raindrops out and allows body vapor to pass through. Once the DWR wears off, water will soak into the nylon layer of the jacket, but GORE-TEX® membrane will keep water from soaking all the way through to your skin.
In order to revive the DWR, the product needs to be thoroughly cleaned according to the care label. When cleaning your GORE-TEX® jacket, be sure to attach all Velcro® closures and zip all zippers. Finally, the entire outside of the garment should be touched up with a warm iron on the steam setting.
This process should revive the DWR. For even better performance, treat your product with a coating of a DWR spray, such as Tectron® or Revivex®. This maintenance program is only required when water stops beading up on the outside of the garment.
In the event you find this process ineffective, please send your GORE-TEX® product in to us. We would be happy to inspect it for you.
If you have any additional questions, please call us at 1-855-500-8639 or W.L. Gore & Associates Customer Service at 1-800-431-GORE.