According to general insurers flexi hoses are the number one cause of internal flooding in Aussie homes.
The rubber tube lining in flexible connectors expands when pressurised and the braided layers of stainless steel are designed to prevent this tube from further expansion. If the stainless steel fails, the rubber inner core will expand to a point where it bursts.
1. CHECK YOUR INSURANCE POLICY DOES NOT RESTRICT OR EXCLUDE COVER FOR LOSSES ARISING FROM FLEXI HOSE FAILURES!!
2. Inspect the flexi hoses annually and have them replaced at any hint of corrosion, kinks or damage. If in doubt call your plumber.
3. If they are over 10 years old it is highly recommended to have them replaced.