Heffenoche said:
Doug I have a Northface Gore-Tex jacket that has seved me well and is still in very good shape but does need some light cleaning. What is the best way to clean this jacket?
OK, time to talk about "care and feeding" of Gore-Tex(r) garments. We get lots of calls to our customer service team, most of them are from folks who think that their Gore-Tex(r) garment has worn out, that it's leaking. Sometimes it is leaking. But in the vast majority of the calls we get, the user doesn't know how to care for the garment.
You paid a lot, so it's probably really hard to take care of -right? Wrong. It's easy. Just follow these easy steps:
1. Wash - use any soap/detergent you have around.
2. Wash a second time with no soap - this removes all the residual surfactant (a wetting agent in all soaps/detergents).
3. Dry in the dryer on medium heat.
4. Sprinkle water on the face fabric, if it beads up, you are done. If it doesn't bead up well (little beads of water are best) then use any one of the various aftermarket water-repellant treatments.
Here's the background explanation.
All waterproof/breathable fabrics have a waterrepellant finish. The trade calls these a DWR (durable water repellant). They are not as durable as we would like - maybe 10 - 20 wash cycles.
DWR is a flouropolymer coating applied to the face fabric. It repels water. However it's easily overwhelmed by dirt, campfire smoke, cigarette smoke, etc. Washing (even without soap) almost always makes it work better.
A dryer re-energizes the DWR, which restores it to near new condition. There is lots of DWR polymer deep within the yarn bundles of the fabric. The heat of the dryer remelts the polymer, and it then flows out to the surface of the fabric. Kinda cool actually.
Eventually there is none left, thus the need to reapply.
For most people, most of the time, there is plenty of DWR left in their garment, it just is covered up by grease/dirt/etc. Proper wash/dry will fix it.
So, inquiring minds should ask why any care is needed anyway? Very simple. It's all about comfort and heat-loss. As I mentioned in a post above, water conducts heat 23 times faster than air. If the face fabric is wet, then the shell of the garment conducts heat away from your body 23 times faster than if you still had fully effective DWR.
Here's the wierd part. Skin has nerves that detect heat/cold and pressure. We have no nerves that detect wet. "Wet" is an interpretation done by the brain. So, if you feel cold (due to the 23 times faster heat-loss) and you look at the fabric and it looks darker, then you conclude it's leaking. Usually it's not leaking, but you are cold/uncomfortable none the less.
The reason this is such a pronounced effect with Gore-Tex(r) garments is that they are so incredibly comfortable when the DWR is 100%, then when wetted out the difference is very noticable.
I recommend doing the care listed above. If the garment is still not performing to your satisfaction, then call our customer service team. They are there to help.
HTH?