7 Best Of What Thickness Ply For Shed Roof Best Resolution Image. The most common rafter spacing is 24 inches and 58-inch plywood is recommended for that. Use it indoors or outdoors but avoid using for framing permanent structures such as a.
WBP ply is an exterior grade where the glue used is a phenolic resin thats resistant both to wet and to heat. Generally plywood comes in 4 by 8-foot sheets and in a variety of grades. Overhang should be OK if the sheets are well anchored screws no further than 15 inches apart.
This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesnt have too much load.
May actually cost less than the 38. Feb 02 2013 I used 18mm for the roof floor and walls of my recent project. Due to market pressures the 12. Steeper rather than flatter roofs will have lesser load per sq.