4x8 plywood sheets cover 32 sq ft. Add 15% for cuts and waste. Plywood for finish work and exterior sheathing. OSB (oriented strand board) cheaper for subfloors and roof decking. Thickness: 3/4 inch for 16 inch joist spacing, 5/8 inch for 12 inch spacing.
Quick Tips
- Always order 10-15% extra materials for waste
- Check local building codes before starting
- Measure twice, cut once — verify all inputs
Frequently Asked Questions
Plywood stronger and more moisture-resistant. OSB cheaper, good for sheathing and subfloors.
3/4 inch for 16 inch joist spacing, 5/8 inch for 12 inch spacing, 23/32 inch common.
A=smooth, B=solid, C=knots allowed, D=defects. AC has one good side, CDX for sheathing.