Related searches: shed roof plywood thickness plywood thicknesses for roofs start at 3/8” in areas with light load requirements on rafters at 16” centers. thicknesses of 1/2 to 5/8 inch are common with rafters spaced at 24” centers.. Small shed ok, put extra beams 16 inches on center. should be able to walk on roof if you are less than 300 pounds.. This 8
