Feel around the inside of the fabric behind the dark patch. Does it look wet? If it is (and you’re sure it’s not just sweat), it could be that the water is getting wet and you need a new application of DWR for your jacket or pants.
A note about getting wet after heavy rain: Even new, hard shell jackets can get wet after long, very heavy rain. So if you see dark, wet spots after a long time in the storm, it is not Not necessarily That means you need a new cover of DWR. Do a little detective work to find out for sure. Once you’ve taken the clothes home and given them a chance to dry, soak them in water with a spray bottle to see if the humidity can rise. If it gets wet again, it’s time for more DWR.
Clean the clothes first
Wash your clothes before re-watering to remove body oil and old dirt. This will help the new DWR coating to adapt better to the fabric. Buy a cleaning product made specifically for technical outdoor clothing, such as Nikwax Tech Wash, although you can use a small amount of regular laundry detergent instead.
You may want to wash them separately from your regular non-outdoor clothing. After that, you are ready to apply DWR treatment. You have two options here: spray or wash-in.
How to apply spray-on DWR
For spray-on options, Gear Aid ReviveX Spray, Grangers Performance Repel Plus Spray and Nikwax TX. Contains direct spray.
Whatever you choose, take it out to apply it — this thing is not good for breathing Just hang your clothes on a hanger outside, zip to the front and close the pockets and spray on the outside of the jacket or pants.
One spray is enough to re-waterproof a garment – which means a pair of jackets and pants. In my experience, though, there’s hardly enough, so don’t ruin your wardrobe by spraying it too long. If you have anything left over after you finish, apply it to areas where there is a lot of friction, such as the shoulders, armpits, and upper crotch / thighs.
How to apply wash-in DWR
Typically, you want to use a DWR wash-in treatment set in a warm-water, gentle cycle on a top or front-loading washing machine, but consult with the bottle of the product you are using. Your best options are Gear Aid ReviveX Wash-In, Grangers Repel Wash-In, and Nikwax TX.Direct Wash-In.
If you do not have a washing machine in hand, you can apply the product by hand with a sink or bucket of hot water and some gloves. Some DWR treatments instruct you to throw the garments in the dryer in a low-heat cycle to seal the coating. See the bottle instructions for the item you are using first.
How long will it last?
Reuse of DWR is not as long lasting as factory-applied treatment. There’s no way around it: you just have to get used to checking your rain gear before traveling and re-applying DWR as needed. High-impact areas such as the shoulders and armpits are exposed to more friction and these areas tend to lose their waterproof coating faster than others.
DWR treatment has, for a long time, used long-chain perfluorocarbons (PFCs) that produce toxic by-products during production and spread to the environment as the product is reduced. Use Fluorocarbon-Free Formulas আমরা ReviveX, Grangers and Nikwax আমরা that we recommend DWR treatment. While you may feel uncomfortable with the idea of introducing more synthetic chemicals into your gear, these treatments extend the life of your fabric several times, creating less waste over time.
The more clothing you use, the faster the DWR cover will wear out. But there is no limit to how many times you can re-apply DWR. As long as the garment is in good shape, you can re-waterproof it year after year and save yourself hundreds of dollars on replacing rain garment.
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