Most expensive repairs begin as inexpensive inconveniences someone decided to ignore.

Almost nothing expensive starts expensive. It starts as a noise, a damp patch, a slightly odd behaviour, something that could be dealt with in an afternoon and instead gets postponed because it is not urgent. The gap between the inconvenience and the repair is where all the cost accumulates, and it accumulates silently.

Think of the small annoyance you have been living around for months. Deal with it this week. It is almost certainly still in the cheap phase.