The answer to 'roof decking missing shingles' is that this is a common roofing issue that can have several potential causes. Missing shingles on the roof decking, which is the structural base layer of the roof, can be due to age, weather damage, improper installation, or other factors. Symptoms may include visible gaps or holes in the roof, leaks, or water damage inside the home.
In many cases, the solution is to replace the missing shingles and repair any underlying damage to the roof decking. This may involve removing and replacing sections of the roof decking, or in more severe cases, a full roof replacement. For minor issues, a homeowner may be able to handle the repairs themselves, but for more extensive damage or complex roof systems, it's best to call in a professional roofing contractor to properly assess and address the problem.