The answer to 'roof decking worn out' is that the roof decking, which is the structural base of the roof, has become damaged or deteriorated over time. This is a common issue that can be caused by factors like water damage, rot, or general aging of the materials.
Some common symptoms of worn-out roof decking include sagging or uneven areas in the roof, visible cracks or holes, and a bouncy or spongy feel when walking on the roof. If left unaddressed, worn-out roof decking can lead to more serious problems like roof leaks, structural instability, and even roof collapse.