Jack,

Do as you will - Vapour barrier or no Vapour barrieer. However, I'd
recommend talking to a local building association for advice prior to
making you final decision.

I happen to live just a couple hours north of you. Nanaimo.

Before making your final decision on this matter check out the
Vancouver Island Home Builders Association and maybe call the local
building inspectors. You can call anonymously if you like and ask your
questions (contrary to popular belief, the inspectors are there to
protect the homeowner!). The Home Builders Association can probably
supply you with some free information as to the whys and wherefores of
vapour barrier and the inspectors would prefer to have the questions
asked before it creates an issue - so that you don't have the costs of
repairing it after if it is done incorrectly.

Just my 2 cents....

Best of Luck on you project!