Making zips more water resistant

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As a lightweight shell, the late lamented TNF DIAD, has a lot going for it. It’s just under 200g, with proper velcro wrist closures, pitzips and a decent hood. It’s biggest weakness is the reversed zips. The main zip has a flap behind it to guard against water ingress. However, water soaks into the material either side of the zip, making it less than ideal.

So, I had a brain wave. Why not impregnate it with some silicone seam sealant? This afternoon I used some SilNet and a thin paint brush to do just that. I painted the main zip, the pocket zip and the pitzips. While I don’t think it’s going to turn the DIAD into a full-on mountain jacket, it will convert it into a good summer waterproof jacket for occasional use. I’ll be taking it to Dartmoor, unless the forecast is bad.

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7 thoughts on “Making zips more water resistant”

  1. I too had thought about sealing a garment though I thought it could be effective on the inside of a windproof garment like my Fuera Smock. It seems that it’s the seams that allows the ingress of water rather than the face fabric thus prolonging the need to don a waterproof!

  2. Yes, something as a guide to keep it clean. I wonder if you could buy the special tape so you could apply it yourself to the inside of a windproof.

    1. Tricky to retrofit 😉 This is just a bodge to make a jacket more usable.

      Amazing that so few (like next to none) manufacturers actually fit waterproof zips.

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