On 11/6/2016 10:39 PM, krw wrote:

Anywhere hurricanes/high winds are an issue. My houses have all had
CDX roof decking, even in Vermont (where ice and water was the issue).
OSB is often used on walls, with CDX corners, but anyone who uses it
on roofs should be taken out and shot.

OSB has been used almost 100% on roofs in my area (PGH) for many years
now. It is the perfect material for roofing. I used it on my shed roof
26 years ago, good as new. It's about impervious to weather. My son
brought home 3 boxes made out of it from a department store warehouse
that something came packed in. We made a couple of feral cat houses out
of it. They have been outside, unfinished in Pgh weather for over 16
years. The are still in very good shape. Only plywood I know they would
last as well is Wolmanized or Cedar. I don't have any recent pics but
other than discoloring, they are very good shape. They outlasted 4 of
the cats, one cat left.

http://jbstein.com/Flick/CHDCP2_1965.JPG
http://jbstein.com/Flick/CHP1030152.JPG

I knew they would last because several cabins on an island near me were
made of this stuff, also unfinished and they were in perfect shape after
many years in the weather, including floods.

--
Jack
Add Life to your Days not Days to your Life.
http://jbstein.com