The answer to 'lifespan of roof decking' is that the average lifespan of roof decking is 30-50 years, depending on the material and environmental factors. Roof decking is the structural layer underneath the roofing material that provides the foundation for the roof. It is typically made of wood, such as plywood or oriented strand board (OSB), or a concrete-based material.
The lifespan of roof decking can vary depending on factors like the quality of the material, the climate, and how well the roof is maintained. Proper ventilation, regular inspections, and prompt repairs can help extend the lifespan of the roof decking. If the decking becomes damaged or deteriorated, it may need to be replaced to ensure the structural integrity of the roof.