Trending Of What Thickness Ply For Roofing Best Resolution Image. If you can afford to replace all the plywood it certainly wouldnt be a bad thing. Other thicknesses are also available for use in non-roofing applications as a special order.
This kind of plywood can be used on roofs with minimal load. Roofing is designed for roofing overlays that can cope with open imperfections in the substrate face. Sheets of 716-inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.
Plywood Roof Sheathing 1532-Inch Thick Approximate Weight.
Mixing thicknesses is not preferred either but if you use the proper underlayments and decent shingles particularly archatectural you arent likely to notice. Duro-Last 50 mil membrane is manufactured with 28 mil of thickness on the top performance layer far exceeding industry standards as well as competitor systems with equal and even greater mil values. Talking about plywood or OSB for roofing you cannot miss the information on the cost. Plywood sheets of at least 38 are required for roof sheathing.