: Do you really need 14oz duck canvas ? or can a 9oz or 10oz duck canvas work
: also ?

: what have you used and works fine ?

Hi,
I'd stick with the 14-15oz canvas. I checked out the lighter weights and found the weave more open. This would make it harder to seal the cloth.

As Bill posted, most use nylon rather than cotton canvas, and 8oz nylon can be used just as effectively. For about half the skin weight.

One advantage with cotton canvas is that almost anything can be used to watterproof it. Except varnish. Barring Tonkinois varnish, it usually makes the canvas brittle and easy to tear.
Nylon tends to be more picky as to what sticks to/works with it.

I use canvas mainly because it's easier for me to get. Plus I like the feel of cotton to nylon. And less static.

I have done some 'tests' with lighter canvas/cottons. Lighter than 12oz and it tears/punctures too easily. It is not child-proof (nephews as testers) but it would hold up for light conditions in clear waters.

Hope this helps,
Mike Savage
South West Cork