question regard to rain jacket
https://www.arcteryx.com/ca/en/shop/men ... gIqD_D_BwE
Apr 9th, 2019 7:19 am
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Apr 15th, 2019 11:02 pm
The marmot precip has been a well regarded budget option.nobodylulukkkk wrote: ↑ No it's not, I saw some good brand on amazon like marmot and I have compared with big brand like HH or arcterx, I knew that big brand might have better features, however, the price is just too much for a poor student like me, I need a cheaper but decent deal, that is why I am asking in here to see if there is more option so I can do my research!
Apr 16th, 2019 8:56 pm
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Apr 23rd, 2019 5:48 pm
I wonder if that's how it works. My understanding is this: breathable fabrics allow moisture in the form of a gas out while not allowing water in the form of a liquid in. Water vapour is considerably smaller than the micropores in a fabric like Goretex but water in the form of a liquid in much much larger and simply cannot go through the micro pores. The water vapour moves via diffusion and not by wicking or capillary action.TruE SkiLLS wrote: ↑ Any rain jacket that is "breathable" is not a rain jacket after a sitting in a few hours of rain. If moisture can go one direction, it can go the other way. The more breathable it is, usually the quicker the rain will seep through.
It really depends on what kind of rain weather protection you're looking at. If you want to be absolutely rainproof, you're looking at something like a garbage bag... but then you'll probably sweat yourself wet inside.
Gear that uses goretex (such as Arcteryx) are usually pretty good at standing heavy rain for a certain period of time, but even they have a waterproof rating on how long they can sustain it. Other companies have their own versions of "rainproof" materials, but a lot of them I find inferior such as Marmot Nanopro. They may withstand rain for quite a while, but the durability of the material is quite poor.
Apr 23rd, 2019 8:26 pm
Overall, breathable and rainproof shouldn't really be used in the same sentence. Google "goretex breathable humidity" and you'll get a lot of articles on how most rain-proof membranes work. (https://www.rei.com/learn/expert-advice ... works.html)Jimbobs wrote: ↑ I wonder if that's how it works. My understanding is this: breathable fabrics allow moisture in the form of a gas out while not allowing water in the form of a liquid in. Water vapour is considerably smaller than the micropores in a fabric like Goretex but water in the form of a liquid in much much larger and simply cannot go through the micro pores. The water vapour moves via diffusion and not by wicking or capillary action.
Many people will tell you that there Goretex no longer works and there is a reason for that. Dirt and other contaminents block the micropores and prevent diffusion. As a result, pleople get wet not from rain coming through but from their own sweat condensing inside the jacket.
Apr 23rd, 2019 10:13 pm
This is the point I rebutted: Goretex is designed to allow water vapour - a gas - out while blocking water - a liquid. You might find this helpful: https://www.explainthatstuff.com/goretex.htmlTruE SkiLLS wrote: ↑ Overall, breathable and rainproof shouldn't really be used in the same sentence. Google "goretex breathable humidity" and you'll get a lot of articles on how most rain-proof membranes work. (https://www.rei.com/learn/expert-advice ... works.html)
1) If you're looking for a rain jacket while commuting, then any sort of "waterproof" fabric would be good cause you're probably not in the rain long and you're not sweating anyways
2) If you want to keep yourself dry while it's pouring and you're doing a hike (or even on a warm day)... "breathable" rain jackets aren't going to work anyways because you need a difference in temperature for diffusion aka "fabric to breathe". If the outside and inside humidity are relatively similar, a breathable jacket isn't going do anything... you'll just sweat and get wet inside.
Then there's the first point I made, if moisture can go one way, it can go the other for the fabric. DWR would help, but once it wears down, you're still looking at just a fabric that will seep water through sooner or later.
Apr 24th, 2019 1:24 am
Apr 24th, 2019 11:36 am
However, if you walk around in a rubber jacket on a rainy day, you will end up wetter than if you wear a Goretex jacket. Goretex is a multilayer fabric so water being absorbed by the outer layer does not mean that water penetrates the jacket.TruE SkiLLS wrote: ↑ "Waterproof Testing
Any fabric is considered “waterproof” when it reaches a certain level of water resistance. Water resistance lab methods are standardized, using a water column or hydrostatic pressure test. Results are stated in millimeters (mm) or pounds per square inch (psi). Brands simply don’t agree on the result that makes a jacket fully waterproof."
Im not chirping on goretex being a bad material in keeping you dry, I have many pieces of goretex gear and I love them for certain things. But unless you've stood outside with these gear for long hours, then it's theory; we aren't talking about the same expectations when it comes to what "waterproof" means.
A very simple test. Leave your goretex under a shower head or tap... If the fabric starts to turn darker, the water is penetrating the layers. Do the same to rubber, it won't change colour cause water won't penetrate it.
Apr 24th, 2019 12:16 pm