Goretex is a superb product, I have a 3layer ripstop Berghaus Goretex layer jacket that I've had over 20 years. Still waterproof and breathable, even with some seam tape pealing. Fortunately, I purchased mine form a very knowledgeable ex tank commander retailer in the UK. He gave customers a 'lecture' when they purchased items on how to wear and care, what was then, a very expensive product.
Now here is the problem with Goretex and similar garments. Firstly, as per the video, the water needs to be able to bead off the outer fabric layer. Manufacturers are partly guilty here by selling products with an outer membrane that isnt compatable with the Goretex technology. They sell garments with a matt surface and fabrics that are aesthetically sellable that 'wet-out' completely, thus rendering the PTFE membrane useless.
Users are also guilty of not maintaining a good quality the outer layer fabric by not washing correctly and not periodically reproofing with a Nikwax TX direct type water repellent type product.
Most importantly is how the Goretex garment is worn. It must be worn in such a way as to create a pressure differential between you and the outside, as stated in the video! Ive lost count of the times I've 'man-splained' to soaking wet trampers that they are wearing their Goretex wrong! They need to be tight around the bottom hem, tight around the cuffs, tight around the neck, tight around the zips. Sealed like a pickle in a jar! Now this is the problem, unless the rain is coming down like stair rods, then most people will wear Goretex more casually, and if the rain is hosing down to that extent, then people are probably taking shelter anyway. Again manufacturers are guilty of Goretex incompatible design. They are making jackets with pit-zips, loose non elasticated hems, vented yokes and loose cuffs. Non of these are going to hermetically seal the jacket down to create that differential.
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