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.