I have just ordered
this fabric (fleece lined softshell) to make the
Style Arc Casey coat.
I have had a sample of the fabric and have rigorously tested it - it genuinely does seem to be waterproof (as the listing says) and not just water resistant. I soaked and squidged and dropped water from a great height, and not a drop came through, even when I pressed the fabric tightly.
I am concerned about the seams being waterproof. I was thinking of using something like bondaweb to make sure that the horizontal seams stay pressed upwards on the inside so that water will not fall directly onto the stitches. The shoulder seams, however, look pretty vulnerable and I was wondering about using liquid seam sealer. Most of the information I have found talks about using it on tents, and just mentions that it can be used on rainwear too. Does anyone have any experience or recommendations?
This is the sort of thing I have found, and the phrase 'almost invisible' makes me very nervous. I assume I would apply it on the inside, and this one appears to be removable with a damp cloth before it dries, but...
Any other advice would, as always, be very welcome...
... and at some point I will have to think about either making a matching hat or adding a (possibly detachable) hood.