The answer to 'how to install roof decking' is to carefully measure, cut, and secure the plywood or oriented strand board (OSB) sheets to the roof trusses or rafters. This creates a stable, solid surface for the roofing materials. Start by measuring the roof area and cutting the decking sheets to fit, leaving a small gap between each sheet for expansion. Then, use roofing nails or screws to securely fasten the decking to the underlying framing, working from the bottom up. Be sure to follow the manufacturer's instructions and local building codes for proper installation.
Installing roof decking requires some carpentry skills and safety precautions, such as using fall protection. If you're not comfortable with the process or have a complex roof, it's best to hire a professional roofing contractor to handle the installation.