Mackintosh raincoats - bonded cotton vs nylon? - Page 2
FWIW, I have a Brooks England Ventile cycling jacket. The fabric is supposed to "soak" up water in order to swell up and close, thus preventing moisture from actually leaking through. However, when my jacket gets wet, the water just rolls right off. You don't see any dark spots, as you'd expect on wet fabric. Don't know if that means it's been coated with a DWR finish though.
Also, a PWVC video of their Ventile jackets, if it helps. My Brooks Ventile behaves in the same way.
Ventile is definitely treated with DWR. http://www.ventile.co.uk/about.php
If your factory seam taping fails, always worth a call to the manufacturer. Most of the high-end outdoor clothing manufacturers will repair items, sometimes at no charge. I sent in an Arc'teryx Gore-Tex shell a few years ago because of failing seam tape. To my surprise, they called me to tell me that they would replace the jacket free of charge because the Gore-Tex fabric was also delaminating. The Arc'teryx representative made it sound like this was going to be covered by W. L. Gore's guarantee.
Any idea why SEH Kelly is so much cheaper?
Yes you could apply DWR to uncoated nylon and not get wet in a light rain. However, it does not make a fabric waterproof, and it does wear off.
DWR is very important, though, for any waterproof-breathable fabric like Gore-Tex, eVent, Ventile, etc because it slows down the rate at which the face fabric becomes saturated with water ('wets out') in the rain. Once the face fabric wets out, water vapor from your body will not escape and you will get wet from your own sweat, even though the fabric remains waterproof in that it is not letting water in from the outside. Thus, it's really important to maintain the DWR by keeping the garment clean and by reapplying DWR when necessary (i.e. when drops of water fail to bead on the fabric).
The venitle claim about swelling is weird given the DWR. My guess is that the fabric is more water resistant with DWR than w/o it, even factoring in the swelling. Plus, DWR is made less effective by dirt and oil, so over time the swelling may become more important.
The two points are related to some experience i had as a kid at Boy Scout camp. We slept in Army surplus tents made of cotton canvas, and it rained a good bit. First time it rained the tents leaked at the seams. We panicked but the adult leaders told us the thread at the seams would swell and leak less. So there's another source for the swelling --> waterresistance theory. We were also told not to touch the tent even when it was dry, as the oil and dirt from our hands would make it leak. We weren't totally sure that claim was true. But touching the tent while it was wet definitely caused leaks. A Ventile coat would be touched all over the place while worn. That's why, I think, you'll read a lot of posts on outdoorsman fora and makers of Ventile coats, like Hilltrek, saying you should get two-layer ventile coats if you really want to stay dry.
Grenfell is a similar fabric that hasn't been mentioned, btw.
hey man! bonded cotton all the way. i have one that's from a collaboration with Drake's.
This model in Blue, size 40. Worn literally once, Hong Kong is probably not the most suitable place for a coat like this.
I wish I could get more use out of it. PM me if it happens to be in your size.
The hood is detachable.
I wound up buying a Valstar navy blue rain jacket:
This is supposed to breathe a bit but havent had the chance to really see. But it looks very nice as the cotton/linen blend give a great texture.