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Re-water proofing a rain jacket

pnj

Turbo Monkey till the fat lady sings
Aug 14, 2002
4,696
40
seattle
My old gortex jacket no longer repels water. Are those spray on water repelant s any good?
 

Nick

My name is Nick
Sep 21, 2001
24,032
14,643
where the trails are
I just re-coated a pair of ski pants with great results.

Get Nixwax TX-Direct spray on and follow the directions. I hung the pants in the shower, sprayed them liberally and let them dry about 90%, then threw them in a warm (not hot) dryer for maybe 10 minutes. The heat helps set up the product, but too much heat and any taped seams you might have could fail.

The spray on bottle I got was $15 and enough to do 2 large items.

Once finished, only wash in the Nixwax wash which won't break down the water repellent. Detergent is the culprit, and since the material is all super-treated before cutting and manufacturing once it's washed out you'll never get it quite as good as new, but likely more than good enough.
 
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bizutch

Delicate CUSTOM flower
Dec 11, 2001
15,928
24
Over your shoulder whispering
I would like the scientific proof that "ironing" Gore-Tex is legit. Pretty certain that all one is doing is literally heat shrinking the material and ruining the scientific "design" of the material.

From everything I've ever read, you're just melting it and it's a temporary fix that is melting the membrane. Yes, it does resist water again, but not in the manner the membrane was meant to. It just becomes a gob of warped synthetics under a microscope.
 

pnj

Turbo Monkey till the fat lady sings
Aug 14, 2002
4,696
40
seattle
If you read the documentation on the gortex site, it says using a low setting in the dryer will 'reset' the water proofing. I'm guessing it's doing the same thing, shrinking the membrane?

My jacket went from working pretty good (it's old) to being worthless, recently. I'm thinking I'll be using a product of some sort (probably the one mentioned above).
 

HardtailHack

used an iron once
Jan 20, 2009
6,729
5,612
Doesn't the spray on stuff just stop them from breathing? The lining is the bit that stops the water coming through not the shell(from what I thought anyway).
 

pnj

Turbo Monkey till the fat lady sings
Aug 14, 2002
4,696
40
seattle
Pretty sure they come with a protective coating that helps shed water.

The membrane/lining is what allows them to breath...?

whatever the case, mine is worthless as a rain coat, currently.
 

Nick

My name is Nick
Sep 21, 2001
24,032
14,643
where the trails are
Doesn't the spray on stuff just stop them from breathing? The lining is the bit that stops the water coming through not the shell(from what I thought anyway).
Backwards.
You want the DWR on the outside, not the lining. There could be several layers in a good shell, the inner layers allow heat/moisture to escape, the repellent on the outside discourages water from penetrating the fabric. That's why it's never as good as new or before you had some beers and washed it in detergent.

(all this from a rep at Flylow Gear, a ski clothing company, just explained to me a couple of weeks ago) YMMV.
 

RideDad

Chimp
Aug 28, 2009
43
0
My Columbia rain jacket failed after many years. Called the company and they sent a new one. Guess that's what you get when you pay for 2-3 when you buy the first one.
 

HardtailHack

used an iron once
Jan 20, 2009
6,729
5,612
I just read the label on my jacket that uses Event Fabric and it said iron on low heat and a bunch of steam.

I wonder if there is a trick to make the stupid rubberised zippers waterproof? Stupid city hikers that want everything pretty have ruined jackets, couldn't find any good ones with the traditional angled pocket with a fabric flap over it. Rubber zips open up as the jackets move around when trail building and let sneaky water in that drowns your phone :(
I want a new version of the jacket I bought in 2001, it was perfect.
 

bizutch

Delicate CUSTOM flower
Dec 11, 2001
15,928
24
Over your shoulder whispering
Doesn't the spray on stuff just stop them from breathing? The lining is the bit that stops the water coming through not the shell(from what I thought anyway).
First part, nope. Second part yep.

Pretty sure they come with a protective coating that helps shed water.

The membrane/lining is what allows them to breath...?

whatever the case, mine is worthless as a rain coat, currently.
Basically, and once the outer shell takes on water, it "feels" heavier b/c it's retaining water between the shell fabric and waterproof membrane. Membrane then feels clammy and can't let vapor escape b/c the shell is clogged with water.



Backwards.
You want the DWR on the outside, not the lining. There could be several layers in a good shell, the inner layers allow heat/moisture to escape, the repellent on the outside discourages water from penetrating the fabric. That's why it's never as good as new or before you had some beers and washed it in detergent.

(all this from a rep at Flylow Gear, a ski clothing company, just explained to me a couple of weeks ago) YMMV.
This is a great straight forward read from REI's site that explains it better. It also specifically mentions that you should not use powdered detergents, which I'd be interested to know why.

The other thing that is unclear is that it mentions using a steam iron to remove stains. Not sure how that happens.
http://www.rei.com/learn/expert-advice/washing-goretex-outerwear.html
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,977
9,638
AK
Lots of people think the water-repellent coating is what makes it "waterproof". It's not, and it may look "soaked" from the outside, especially when that coating has worn off. It's one of those physiological things though, people can't stand to not have it beading up like new. Water-phobic materials on the horizon may finally solve that issue.
 

SkaredShtles

Michael Bolton
Sep 21, 2003
65,639
12,700
In a van.... down by the river
Lots of people think the water-repellent coating is what makes it "waterproof". It's not, and it may look "soaked" from the outside, especially when that coating has worn off. It's one of those physiological things though, people can't stand to not have it beading up like new. Water-phobic materials on the horizon may finally solve that issue.
This. If you're getting wet after the DWR has worn off then there is a problem with the Goretex membrane and you should return it to the mfg'r for warranty.
 

HardtailHack

used an iron once
Jan 20, 2009
6,729
5,612
Lots of people think the water-repellent coating is what makes it "waterproof". It's not, and it may look "soaked" from the outside, especially when that coating has worn off. It's one of those physiological things though, people can't stand to not have it beading up like new. Water-phobic materials on the horizon may finally solve that issue.

Yeah that's what I thought too, my newest jacket started doing it after a month or so on the panels that flexed a lot. I'm still dry inside but I would imagine as others have said it would breathe better if the outer layer wasn't waterlogged.

I got told not to use a sealer on some Gore Tex lined shoes I had, the salesperson said it just makes them slow to dry out.
 

UNHrider

Monkey
Apr 20, 2004
479
2
Epping, NH
This. If you're getting wet after the DWR has worn off then there is a problem with the Goretex membrane and you should return it to the mfg'r for warranty.
And if you've had the coat long enough the DWR coating isnt as effective your coat is probably dirty, and the membrane will no longer allow the water vapor to move on out.
 

pnj

Turbo Monkey till the fat lady sings
Aug 14, 2002
4,696
40
seattle
My coat is 6-7 years old. I don't wear it year round and it doesn't get much use.

It has been washed from time to time (thanks to the girlfriend, I'd never wash it myself).

My reasoning for thinking that it's no longer 'working' as a water proof item is because when I took it off, the three layers of clothes I had on under it, were soaking wet...

It's a Patagonia and it was a gift. You think they'd take it back? it's in awesome shape/condition (clean, no rips/tears/etc).

it just gets me all wet, inside...
 

SkaredShtles

Michael Bolton
Sep 21, 2003
65,639
12,700
In a van.... down by the river
My coat is 6-7 years old. I don't wear it year round and it doesn't get much use.

It has been washed from time to time (thanks to the girlfriend, I'd never wash it myself).

My reasoning for thinking that it's no longer 'working' as a water proof item is because when I took it off, the three layers of clothes I had on under it, were soaking wet...

It's a Patagonia and it was a gift. You think they'd take it back? it's in awesome shape/condition (clean, no rips/tears/etc).

it just gets me all wet, inside...
Yup - Patagucci will replace that. I doubt they'll even ask you about it...