proper spacing between rafters for metal roof

Plywood is generally slightly stronger than strand board, and ½-inch thickness is often recommended for adequate strength. With lighter materials, such as asphalt shingles, a minimum thickness of ⅜-inch may be adequate. To determine the appropriate roof sheathing thickness, assess the maximum permitted loads and the maximum spacing of rafters or trusses.įor roofs with heavyweight materials like tile or slate, you will need a thicker roof sheathing. Roof sheathing must bear the dead load of the roofing materials, as well as any live loads, such as snow or wind. When choosing the proper sheathing thickness for your roof, consider the weight it needs to support. Factors Influencing Sheathing Thickness Load Requirements The Engineered Wood Association offers additional resources for understanding the various sheathing materials available and their specific applications. When choosing between these roofing sheathing materials, consider factors such as your budget, the type of construction or renovation project, and the required structural properties for your building. While solid wood boards may not provide the same structural properties as plywood or OSB, they can still provide your roof with a classic and traditional look. Traditional wood boards, such as 1×6 or 1×8 lumber, can also be used for roof sheathing on older or historic buildings. It may have a lower fastener-holding capability than plywood, which may require additional reinforcement.The recommended thickness for OSB is 5/8″.When using OSB for your roof sheathing, consider the following: OSB boards often look similar to chipboard but are distinguished by their purpose-oriented manufacturing process. It consists of layers of wood strands that are bound together using adhesives and then compressed to create a solid panel. Oriented Strand Board (OSB) is another common roof sheathing material made from engineered wood.

Some advantages of using plywood for roof sheathing include: Oriented Strand Board (OSB) When choosing plywood for your roof, ensure that you select construction-grade plywood that can withstand the elements and provide the necessary strength for your building. Plywood typically comes in a 4×8 foot panel and is available in various thicknesses, such as 1/4″, 1/2″, and 3/4″. It is made by gluing layers of wood veneer together at 90-degree angles, creating a strong and rigid construction. Plywood is a popular choice for roof sheathing due to its strength and versatility. Factors Influencing Sheathing Thickness.

Proper spacing between rafters for metal roof