d1be1082 
 XPost: alt.building.construction, alt.trades.building.construction.canada 
 From: billmd2004@rogers.com 
  
 Search "Canadian Wood Council".  This organization regulates wood timber, 
 glulam, paralam and other natural wood products and provides the rating and 
 grading system. 
  
 Good luck! 
  
  
 "Some Guy"  wrote in message news:3FF750F8.C2C690BE@Guy.com... 
 > First question:  From reading past posts I know there was disagreement 
 > over whether OSB or plywood makes a better roof deck.  (better from a 
 > durability / water-exposure / dimensionally-stable point of view). 
 > Does uncertainty still exist, or is one better than the other (for 
 > roof decks that is - on 16" centers - in Ontario if that's important). 
 > 
 > Second question:  Regarding the plywood and OSB sold in the big box 
 > stores - where (I'm sure) the sales dweebs have no clue where the 
 > stuff comes from, who makes it, or how it's rated - how can I find out 
 > what the heck the stuff on the shelves is rated for (exterior, 
 > interior, water-resistant, fire resistant, etc)??  Is there any 
 > general or common knowledge of what a given big-box retailer puts on 
 > their shelves?  In Canada?  In SW Ontario? 
 > 
 > Basically, how can I make an educated and informed purchase of a dozen 
 > or so 4x8 sheets of (OSB or Plywood) by knowing in advance that store 
 > X has exactly the grade of product that I've determined I need? 
 > 
 > Also, what's the difference between plywood and PDX ? 
  
 --- SoupGate-Win32 v1.05 
  * Origin: you cannot sedate... all the things you hate (1:229/2)