If you damage the cab of your truck while hauling hardware for a home project will repairs be covered under a comprehensive claim?

To the best of my knowledge, a comprehensive claim usually only covers "acts of God"/"Acts of nature" such as a tree falling, rocks breaking the winshield, potholes in the road damaging wheels, etc. If it was something you could have controlled, such as hauling materials on your truck for work, they may not cover it under comprehensive.