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Ive a jacket thats still in very good nick but not very waterproof any more whats best way to get it beeding the rain off again spray or them wash in things
I've always found the Nikwax Tech Wash followed by TX Wash-in to be pretty good. Never used spray on stuff though.
Also found that never washing a jacket in detergent really increases the longevity of the waterproofing agent too.
I now only wash my water/splash proof stuff in Tech Wash. If you buy it in bulk its not too expensive either.
Wash whatever you want to proof with pure soap flakes before hand (normal washing stuff blocks the hydrophobic coating), and then either Nikwax wash-in if you've got no tumble drier, or if you do then the Granger's stuff is a bit better providing you give it a good spin on hot to bond the coating to the clothes.
+1 for Nikwax both wash and reproofing, I wash in water only normally (definitely no detergent) with the occasional tech wash and reproof. Been using it on ski, sailing and bike kit for many years.
cheers i only was my bike stuff in washer on 30 wi no soap but after 2 years of british soaking it wets out straight away, ill pop to go outdoors and get either the nikwax or grangers as ive a tumble dryer, need it for weekend as im sure itll rain whilst im in scotland
+1 for Nikwax tech wash. I use it for all my goretex stuff. Make sure you wash out the machine soap draw though as detergent stops it working (apparently - its too expensive to risk finding out the hard way).
I've been told that putting items in the tumble drier on hot can reproof things but I don't have one so can't test ot myself.
seems nikwax wins, my soap draw always has soap residue best wash that bad boy out 1st
also run a service wash http://www.outdoorsmagic.com/hill-skills/tip---clean-your-machine/9152.html