4 major defects found during home inspections

Often times while preforming a home inspections in Pensacola, FL and surrounding areas, we find minor defects ranging from an interior door not opening and shutting properly to ceiling fans that don't work. Sometimes we find major defects. These defects can be safety issues with electrical components or material defects in the structure that can be costly. I would like to go over 4 of these major defects and explain why it's important to our clients when these issues are found.

1. Foundation; foundation issues such as large cracks due to separation are by far one of the most expensive repairs especially when it comes to concrete foundations. Crawlspace foundations consist of wood/concrete piers, wood girders,and floor joist which is mostly found in older homes. Sometimes I will find over stressed wood components or poor workmanship.
2. Electrical; this is one of the major safety issues I find in many older homes. When most of these homes were built, building codes were not enforced like they are today. I would find amateur wiring done by past homeowners (which is very unsafe). Sometimes I would find electrical components that were recalled many years ago still being used. 
3. Roof; a home's roof protects the interior from outside weather elements. It's one of the most important component of a home. A simple roof leak can create unseen costly damage to the interior
4. Plumbing; I notice sometimes homeowners would temporarily "fix" leaks thinking it's permanent. Plumbing leaks can also cause damage resulting in expensive repairs.