Great link on exterior moisture management

If you have not signed up for the MIT newsletter you should.

This came in the email today.http://www.masoncontractors.org/2012/01/16/drainable-is-sustainable/

Here is a link to the main site as I have found it educational.http://www.mtidry.com/

Follow the Canadian recommendations. The first document about rainscreens I know of is from 1960:
http://www.nrc-cnrc.gc.ca/eng/ibp/irc/cbd/building-digest-40.html

A rainscreen design guideline was available from CMHC in 1985 for the grand price of $4.00!!

Thanks BOB.
Your the king mate:-)

Thanks Mr B and Mr B good info