: Technically, polyvinyl chloride (PVC) and vinyl are the same thing.

: For my own purpose, I've long used the term PVC to describe
: supported
: vinyl ( cloth core), and vinyl to describe unsupported vinyl ( no
: cloth),
: or to describe the vinyl coatings. I don't want to leave anyone
: confused on this.

: Tom
Hi, thanks Mike and everyone who answered. I did buy the 18oz. material. Now I just have to sit down and get to work covering the kayak. I shall try to follow Tom's instruction and hopefully manage to get the job done. Puget Sound is waiting. Thanks, Gisela