The answer to 'what causes toilet repair' is that there are several common issues that can lead to the need for toilet repairs. These include a clogged toilet, a leaky toilet, a malfunctioning flush mechanism, and a cracked or damaged toilet bowl.
A clogged toilet is often caused by flushing items that shouldn't be flushed, such as wipes, paper towels, or excessive toilet paper. This can lead to a backed-up toilet that won't flush properly. A leaky toilet can be caused by a worn-out wax ring, a cracked tank or bowl, or loose connections. Issues with the flush mechanism, such as a broken flapper or a problem with the fill valve, can also lead to toilet problems. Finally, a cracked or damaged toilet bowl may need to be replaced entirely.