The phrase "to spring a leak" means that something is leaking or dripping, usually a liquid, from a container or object unexpectedly or unintentionally. Full definition
That's for those little - to - large expenses that insurance won't cover, such as the water heater that springs a leak in the middle of the night. (nerdwallet.com)
Your car breaks down or your roof springs a leak and you need $ 1,500 to make repairs. (mybanktracker.com)
If a pipe springs a leak or the hot water heater keeps turning off then these are issues would be covered and repaired for by the builder. (stockmonkeys.com)