Replies

1. 
   kcoyner | Oct 01, 2004 06:09am | #1

   This discussion has been done many times here (over 500 messages).  You will still get different opinions from different people. 

   As for me personally,  I have framed 2 houses in the last 3 months, both around 4000 sq. ft. plus garages.  I framed one with Advantech subfloor, 7/16 OSB for walls, and 5/8 OSB for roof.  AdvanTech is the best subfloor I've ever used.  7/16" OSB is showing some signs of slipping QC with odd sized panels, slight out of square, and improperly placed nail lines or missing lines.  5/8 OSB has been standard for roof sheathing in my company for about 6 yrs now with no failures or quality issues.  I switched slowly from plywood to OSB when I started having problems with delaminations, multiple core voids, curved lines, and so on.  I changed wall sheathing first, then floor, and finally roof after I had to remove a bunch of 5/8 CDX from a roof at my expense. 

   The second house I framed entirely with plywood at clients request.  He is from Conn. and claimed that OSB was hardly ever used there and sees it as a cheap product for cheap construction.  He's 72 yrs old and not easily swayed from his opinions.  Well all the same problems are there save the roof so far ( it's not delaminating ).  The 1/2" CDX is terrible and nearly imposible to install to look as though it was by a professional.  The 3/4 T&G floor sheathing is swolen and delaminating at the edges.  So it's safe to say that I'm in the OSB camp for now. 

   k

1. 
   brownbagg | Oct 01, 2004 02:50pm | #2

   county will not let osb use on roofs around here.