This is another headline that uses curiosity to encourage clicks. The tip itself has a practical basis, but it’s not something everyone must do.
The idea behind placing an upside-down glass over a piece of paper in the sink before leaving on vacation is to check whether your home lost water pressure while you were away:
- Before you leave, place a dry sheet of paper in the sink and cover it with an upside-down glass.
- If the water supply remains off and the sink stays dry, the paper should still be dry when you return.
- If there was a backflow, drain issue, or water entering the sink while you were away, the paper may be wet or damaged, indicating that something happened.
However, this is not a reliable way to detect all plumbing problems. It won’t tell you if:
- A pipe leaked elsewhere in the house.
- A toilet or appliance leaked.
- There was a small water leak that never reached the sink.
For a longer trip, more effective precautions include:
- Turning off the main water supply if practical.
- Unplugging unnecessary electrical appliances.
- Emptying perishable food from the refrigerator.
- Setting the thermostat appropriately.
- Asking a trusted neighbor or friend to check on your home.
- Using smart water-leak sensors if you want early notification of leaks.
So, the upside-down glass trick is a simple, low-cost indicator that may reveal if water entered the sink while you were gone, but it’s not an essential or comprehensive vacation safety measure.
