Plywood long ago lost its market leadership to oriented strand board (OSB), which is now the most-used sheathing and subflooring material.I have done many home renovations and have always used plywood as underlaymet or sheathing. Looking at some new homes going up locally and in the mid to high six figure range, see that most have OSB which bI bought here OSB Board | Sterling Board | OSB3 Board | OSB Sheets anyway as sheathing. My very few times using this material is that it absorbs moisture, swells and disintegrates. Good exterior plywood seldom will. Plywood also has some flexibility while OSB crumbles.
This leads me to my question - why are builders/remodlers using this inferior product so extensively? The cost savings can't be that much plus it's a lot hard to handle, ofteb breaking, negating any costsavings. Or am I all wrong:surprise: