Slab leaks are caused by a variety of factors. From shoddy workmanship to earthquakes a slab leak can be destructive and expensive to fix. Here are some examples CPLD finds when checking for slab leaks: Pre-Damage and Poor Installation When building a home, some materials get a little banged up. If it’s your pipes that experience any damage, it could cause problems in the long run. Also, if the pipes were not correctly installed, there’s a good chance that they won’t function properly once they have a house sitting on top of them. Ground/Foundation Shifts Ground shifts, earthquakes, room additions can all cause the ground of your home starts to move. When this happens, your pipes can take the hardest hit. While pipes are strong and can withstand a lot of things, too much pressure can really take a toll and cause them to leak. Abrasion Pipes are going to expand and contract as water flows through them. Hot water, cold weather and how your home was built can determine whether or not a leak will occur. If the pipes are in a place where they are exposed to concrete, gravel, even other pipes, they could start to rub against them (until they eventually wear down) if they don’t have enough room to expand. Corrosion The most common fault in home plumbing systems with copper pipes, corrosion can be a big factor in having a slab leak. Since these pipes are located underground, it’s only natural for them to come into contact with soil. However, the addition of soil can cause the pipes to corrode faster over time.