They were waterproof for while. Not anymore - I assume the Gortex lining has 'given up the ghost'. I was getting very wet feet and as the boots are nearly worn out anyway, I decided to experiment a bit. I waxed them with Sno Seal - the same way you would with leather boots. 2 layers heated with hair dryer to make it soak in.
Results - yes they are a lot more waterproof than they were but they are now also a lot 'sweatier', as they don't breath anymore. Win some/lose some .